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With that let me turn it over to Jack to say a few words. Afterwards I will return in my interim CFO capacity to discuss our second quarter results and updated guidance for the year.

Jack L. Sinclair -- chief executive officer and board of director.

Thank you, Chip and good morning everyone. I'm pleased to have the opportunity to speak with you all today on my first earnings call with Sprouts. Over the past few weeks I've been spending time in the stores and lots of dialogue with team members across the company.

In my years working in the United States, I've admired Sprouts from afar, so I'm excited to be in the middle of the business now. Sprouts is a unique format and a unique brand. We have an opportunity to grow because we can expand access to fresh, healthy, and affordable food.

Consumers across the country are becoming increasingly concerned about feeding healthy food to their families. Sprouts is best place to serve those concerns and provide a healthy alternative. That is why I'm so excited to be here and lead the growth of this brand.

I believe in creating a culture of transparency within the company and with all our stakeholders. I believe in creating a culture of clear accountability and meeting our commitments to each other. I believe in our customer-centric culture and always listening to our stores and our customers to help us improve and understand how to improve our business.

Today I do not have all the answers as to how we're going to improve develop and grow this business, but we will build a world-class executive team with depth and diversity and a capability to capitalize on the significant growth opportunity in front of Sprouts.

As for grocery retail, we all read the same headlines, the competition is fierce and there are many retail outlets where customers can find food -- even healthy foods. The future will be defined by those that follow the customers those that stay in front of or create the product trends those that bring a differentiated and unique experience both in-store and digitally. And those will grow profitably. They will be the winners. And I'm confident that Sprouts can be at the forefront.

We have had tremendous opportunity to expand a well-worth brand with a unique healthy product assortment across the United States. We have a great foundation but we have significant work to do. Leaning on my background in companies of scale, I know we have opportunities to evolve this business model to be even more efficient and effective.

I look forward to working with the team to build upon strategies that capitalize on our strengths and determine new paths to win over customers. I plan to share more detail with you all in the coming months and look forward to meeting many of you out on the road or in our offices in the near future.

I will now hand it back to Chip to discuss our second quarter results and gains.

Lawrence P. Molloy -- chief financial officer

Thanks Jack. Now, turning to the second quarter results. Net sales were $1.4 billion, up 7% compared to the same period last year. Comparable store sales increased 0.1% and comp transactions were down slightly. April was our most challenging month this year, driven by limited produce availability, reducing our ability to improve to promote and drive traffic. Trends were better in May and June, but still below our expectations.

Our online sales, while still relatively small in total, increased 170% expanding our reach to new customers while also providing a convenient alternative to current customers. The online basket has a higher penetration of private label items and less promotional items producing a higher gross margin. In addition, our click and collect test has expanded in the Phoenix market as we further engage with customers regardless of how they shop.

Product innovation continues to drive double-digit sales growth in private label items which reached 14% of total company revenue in the second quarter. More than 45% of our baskets contain a private label item, the testament for the consumer adoption of our brand. For the second quarter gross profit increased by 6% to $465 million and our gross margin rate decreased by 35 basis points to 32.8% compared with the same period last year. This was primarily due to the increased product cost, now fully reflected in retail pricing and slightly higher distribution and transportation costs.

SG&A increased 9% to $383 million or 27.1% of sales compared to 26.5% in the same period last year. Excluding the 35 basis point impact from the adoption of the new lease accounting standard, SG&A deleveraged 20 basis points. This primarily reflects investments in new stores, increased interchange fees and increased cost associated with the expansion of our home delivery program.

For the second quarter, our depreciation and amortization cost increased 12% to $30 million or 2.1% of sales, an increase of 10 basis points compared to the same period last year. EBITDA decreased 8% in the second quarter to $81 million. And EBITDA margin decreased 100 basis points including a non-cash impact from the lease accounting standard. For comparability, if the second quarter 2018 results reflected the same lease accounting, EBITDA margin would have decreased by 65 basis points.

Net income for the second quarter was $35 million and diluted earnings per share was $0.30 compared to $0.32 in the same period last year. As a reminder, the lease accounting standard change will result in a net incremental expense of $0.04 per share for fiscal 2019 or penny a quarter.

Shifting to the balance sheet and liquidity. We continued to utilize our strong operating cash flow from operations, $249 million year-to-date to support our unit growth and sales initiatives. So far, we've invested $84 million in capital expenditures net of landlord reimbursements, primarily for new stores. During the second quarter, we opened six new stores with the addition of two new states, Louisiana and New Jersey.

As we planned, one lease expired and one was not renewed and one store was relocated, resulting in 326 stores in 21 states by quarter end. Our recent store vintages continue to open strong in both new and existing markets, which we believe reflects the opportunity to extend our reach. We ended the quarter with $59 million in cash and cash equivalents, $515 million borrowed on our $700 million revolving credit facility, $55 million available under our current share repurchase authorization and a net debt-to-EBITDA ratio of 1.4. During the quarter, we repurchased 2.4 million shares for a total investment of $51 million and total year-to-date investment of $163 million.

Now let me turn to 2019 guidance. We are adjusting our guidance today, reflecting a year-to-date performance and our expectation for the remainder of the year. For the full year, we now expect net sales to grow 7% to 8% with essentially flat comps. Gross margins should be down approximately 20 to 30 basis points and SG&A should grow approximately 10.5% year-over-year. Earnings per share should be between $1.05 to $1.09 with a tax rate of approximately 24%. We continue to expect our capex spend to be between $170 million to $175 million net of landlord reimbursements and are on track to open 28 new stores.

In closing, speaking for our Board of Directors, we still believe there is a tremendous opportunity going forward for Sprouts. The passion our customers and team members have for our brand combined with a white-space opportunity to extend our reach both from a marketing and new store perspective is not just encouraging, but exciting. That said, there is work to be done and we are not satisfied with recent results. We believe the hiring of Jack is a major step toward reversing recent trends and creating a path that captures the opportunity in front of us.

With that, we would like to open up the call for questions. Operator?

Questions and Answers:

Operator

Thank you. [Operator Instructions] And our first question comes from Kelly Bania from BMO Capital Markets. Your line is open.

Kelly Bania -- BMO Capital Markets -- Analyst

Hi, good morning Jack and Chip, and thanks for taking the questions. I guess, just curious here, what your assessment -- I realize it's early, but what your assessment of the issue is here. Do you attribute some of this comp weakness to just a lot of the management change that's happened in the past several months? Is the market actually becoming more and more aggressive in produce and that is not having the same traffic driving capabilities that you used to? Are you losing customers? Just what is your initial assessment and what are the options at this point?

Jack L. Sinclair -- chief executive officer and board of director.

Thanks Kelly for that question. And it's a good question. The fundamentals as I look at a business I preface. I wouldn't see it today with it. Since the early days is that this business has done incredibly strong foundation in terms of what is working at. The foundation of deeper expertise and knowledge in this segment the natural and organic sector is right through the business and it's really encouraging when you meet people and understand that they're in a different league in terms of the knowledge of this sector. And I think the customer interest in healthy eating is as strong as it's ever been. And I think we're well-placed in that in terms of having that foundation.

I think it's difficult for me to comment on whether the disruption over the last few months has made a difference to that comp number. The one thing I will -- we are clear about is that promotional mix that we have in our business this combination of EDLP and high-low and how we're managing that balance has probably got out of sync and there's an opportunity for us, I think not only to grow the comps but stabilize the margins at the same time, and that foundation I think is right in the middle of how we're exercising price. I don't see a more aggressive price environment out there than it has been over the last few months. But I do see that the opportunity in front of us is our opportunity to stabilize margins, build on a foundation of the business and grow comp sales from that.

I'm very encouraged by the new stores as well. It's really -- we opened a couple yesterday. It's very encouraging to see the passion of the customers and the passion of the people in the stores behind the mission of what the brand's about. So I think there's a real strong foundation and I think if we get ourselves over the next few months, managing this better we'll be in a stronger position going forward.

Kelly Bania -- BMO Capital Markets -- Analyst

And just -- there's a comment in the release about the brand expanding its footprint. Can you give any indication of your commitment to this kind of pace of opening stores, or is there any likelihood that you may want to slow this as you kind of get things back in sync here?

Lawrence P. Molloy -- chief financial officer

Kelly it's Chip. We're looking hard at that piece and it is clear to us, you think about retailers and their lifespan, especially those that have been really successful. You look at a lot of the different brands and there's a period in their life where they're really growing their square footage. They're expanding their reach and they're going after the customer. And then there's a period in their life where that starts to slow down and they're really focused on productivity and they really try to drive and expand their operating margin and drive earnings through that.

You can look -- the predecessor would be like Five Below is today. It's growing like crazy and doing a really good job. In productivity, Home Depot is on the other end of that. Home Depot has done a great job on the other end. Our early look is that we've tried to do both. And to do both really well is very, very difficult. And so we're sitting here as a company with what we believe is a differentiated model with differentiated product, differentiated experience in the stores, with a lot of white space in front of us.

So, yes, we are going to reevaluate in how we go to market and how we extend our reach and we're going to look at how big the box is, how much the box costs and how fast we can grow this. I don't foresee us slowing down growth if anything it's going to go the other direction.

Jack L. Sinclair -- chief executive officer and board of director.

And just to reinforce that Chip, I think there probably is an opportunity for us to approach this store growth slightly differently in terms of how we've operated. And looking at the format, I think there's opportunity to do them slightly smaller and probably an opportunity to do them in a slightly more concentrated geographic approach going forward.

Operator

Thank you. Our next question comes from Rupesh Parikh from Oppenheimer. Your line is open.

Rupesh Parikh -- Oppenheimer -- Analyst

Good morning and thanks for taking my questions. So following up on Kelly's question, just on store growth. As you look at your current store basis and some of your newer openings in newer markets like New Jersey, Louisiana, Philadelphia, et cetera. What are you seeing right now for those stores? Are they collectively meeting your expectations? Just want to get a sense of how your store base is performing?

Lawrence P. Molloy -- chief financial officer

Yeah Rupesh. The stores for me are expectations in many ways. We're exceeding our expectations. First year on average we're -- on average -- not every single one, but on average, all of our stores are beating the performance on average of what we expect. We had some real winners of late. Some of the stores in the Mid-Atlantic are winning in a very positive way, very early on.

That said, we're now opening stores that we thought about 18, 24 months ago. So the lead times -- how do we go after that and go after that in an aggressive way and do it in a productive way is something that we're going to look at.

Jack L. Sinclair -- chief executive officer and board of director.

And Rupesh, the customer reaction has been very strong in -- I don't think in most of -- all our new stores have delivered on that. I think the issue that we have created we've created some stresses and strains in our supply chain in terms of how that's working going forward and that's something that a growing business often gets itself into, so I think there's some real opportunity for us to mature how we're serving the stores. So we're doing it more efficiently than we are at the moment, while retaining the customers' excitement around the format.

Rupesh Parikh -- Oppenheimer -- Analyst

Okay. Great. Then I guess also with growth, so I think prior -- or maybe at least earlier this year, the thought was that you'd get back to double-digit EPS growth next year. Obviously, there's been a lot of changes out there that have taken place. Is there any initial insight in terms of how you're thinking about the earnings algorithm going forward?

Lawrence P. Molloy -- chief financial officer

We have work to do there Rupesh. I know that this is a company that had quote an algorithm there a couple of years ago. That was really trying to march toward that and quite honestly, we haven't been achieving that over the last two years. So it sort of a don't want to jump into the definition of insanity and put it out there and not achieve it. So we're going to really work hard over the next couple of months, really strategizing how we think about this business over the next three to five years, how fast we want to grow, what type of investments that takes and therefore what we can drop at the bottom line.

But I am very confident that this is a company that can grow and can grow and keep it's gross margins stable and there -- how much investment we have to do we'll have to figure that out as it relates to our overall operating margin and therefore what our earnings growth will be. But more to come I think we'll be in a really good position before the end of the year to really speak to that.

Rupesh Parikh -- Oppenheimer -- Analyst

Great. Thank you and best of luck.

Lawrence P. Molloy -- chief financial officer

Thanks.

Jack L. Sinclair -- chief executive officer and board of director.

Thanks.

Operator

Thank you. Our next question comes from Scott Mushkin from Wolfe Research. Your line is open.

Scott Mushkin -- Wolfe Research -- Analyst

Hey, guys. Thanks for taking my questions. So I guess this is more just kind of on -- just understanding the operations right now. I think you said Jim's going to be the advisor to the company and Jack's trying to kind of get to know the company. So I guess my question is like who is making the decisions on a day-to-day business given the changes in the organization?

Lawrence P. Molloy -- chief financial officer

Yes, Scott. This is Chip. That's a great question. I'll start with Jim. Jim has given his heart and soul to this company over the years. I mean that literally. He's really given it been all in and we and I'm speaking for the board have been incredibly grateful for everything that he's given to this company to help grow it to where it is today. But Jim's at a time in his life where Jim really needs to focus on Jim and so he's really working hard to do that.

But I've had conversations with him. I met with him and he's excited to help Jack transition in his new role. We're very fortunate to have Jim still be engaged at some level for the next several months. So that's really good for us. But the decisions now are made collectively. We are really trying to coordinate it between Jack, myself and our executive leadership team. We are meeting together weekly as an executive leadership team. We're putting it all on the table and we are collectively making decisions.

I'm a chain-of-command guy. Jack's got 51% of the vote at the end of the day. So that's the way it's going to work. But right now, we are storming norming. So we're getting through that, but I think we're -- it's been very productive. I'm very encouraged by our weekly executive leadership team meetings and the conversations we're having there and the decisions that are getting made during the week after those meetings happen.

Jack L. Sinclair -- chief executive officer and board of director.

So my challenge in this -- sorry, Scott.

Scott Mushkin -- Wolfe Research -- Analyst

No, go ahead.

Jack L. Sinclair -- chief executive officer and board of director.

Yes. My challenge in the middle of that question which is a good one is, how to harness the sheer energy and morale of the company, which is very strong and how to harness that appropriately. As Jeff said, we're putting in a much more disciplined meeting structure than we had before, which is going allow us -- and maybe that is a consequence of all of the changes over the last few months. But I think that discipline structure and the clarity of that structure is much clearer today than it was a few weeks ago and that's something I think will allow us to have the kind of the levers and the control on a short-term basis that allows us to manage the business effectively.

Scott Mushkin -- Wolfe Research -- Analyst

Yes. Appreciate that. My follow-up question goes to really how and why the competitive climate will get better. And with that, how do you really change the comp sales trajectory? Maybe it's a little early Jack for you to kind of think about that, but it does pop into our head this -- the competitive climate just seems stuck in a very, very difficult position and so just wondering how and why it will change and how you can change the comp sales trajectory? Thanks.

Jack L. Sinclair -- chief executive officer and board of director.

Sure. As you can imagine Scott, it pops into my head a lot as well in terms of how we think about our competitive dynamics. And the one thing I'm pretty clear about is that we've got a very unique proposition and the destiny of the businesses is in our own hands. And our business model, our format the way we go to market and the catching in which we've got great expertise on those are the areas that we can be -- have a strong mode on.

We can have a strong mode now that whatever -- honest whatever anyone does, we've got a strength there in terms of areas particularly produced, which I think retains the reputation that it's always had within Sprouts, particularly in the vitamin area, particularly in the bulk area. Those are areas that other people aren't coming after that to any great extent, when I look at the competitive dynamics. So the control of that is in our own hands and what I like about -- what I really liked about the opportunity of coming here is this brand, it needs to tell some more stories about what it does for the control that we have will allow us I think to chart our own course in this space and the other guys they have to change to be us and they're not likely to do that when I look at what other people are doing. So we're watching closely. It's early days, but I'm feeling pretty confident that we've got both the people and the positioning that will allow us to chart our own course going forward.

Scott Mushkin -- Wolfe Research -- Analyst

Hey, thanks for taking my questions. Appreciate it.

Jack L. Sinclair -- chief executive officer and board of director.

Thanks, Scott.

Operator

Thank you. Our next question comes from Chuck Cerankosky from Northcoast Research. Your line is open.

Chuck Cerankosky -- Northcoast Research -- Analyst

Good morning, everyone. Similar to what Scott was getting at when you're looking at the food retailing environment right now, can you tell us why you think it's so difficult to pass-through higher food costs while consumers are saying expanded discretionary income?

Jack L. Sinclair -- chief executive officer and board of director.

Yeah. I think again, it's a good question. I think within our world, what we've done and I can't really comment too much on why everyone else can't give, but within our world we've had a situation where we've got ourselves a little bit mixed up between our way and EDLP pricing and we won't have EDLP pricing and we're worried about high-low pricing. There's a reason why within the context of the very clear promotional strategy, we can't get ourselves into a place whereas food prices go up, or down that we can't retain the perspective of having retail price inflation in line with those changes. There's no reason why we need to be not able to pass-through margins as cost prices change. And the volatility probably more volatility in the fresh food space that we have to manage probably a little bit more carefully going forward.

Chuck Cerankosky -- Northcoast Research -- Analyst

Are you saying when you look at the in-store spending activity let's say your best customers to the degree you measure that do you think you're holding their share of wallet for food purchases?

Lawrence P. Molloy -- chief financial officer

Chuck, this is Chip. I think that's a question that quite honestly because of our time and ability it's just one that Jack and I digging into the customer and the segmentation and the movement of customer is something honestly that we just haven't gotten to in the last couple of weeks.

Chuck Cerankosky -- Northcoast Research -- Analyst

All right. Thank you.

Lawrence P. Molloy -- chief financial officer

Sure.

Operator

Thank you. Our next question comes from Andrew Wolf from Loop Capital Markets. Your line is open.

Andrew Wolf -- Loop Capital Markets -- Analyst

Thank you. Jack, I just wanted to ask you kind of your view on scale which you mentioned in other words these very large prices in relation to Sprouts. So, let's just say granted we were to agree that Sprouts is well positioned in the market, what is your view on Sprouts' relative scale to complete and a real changing landscape and in particular I'm pointing to the resources to really fully develop digital and e-commerce?

Jack L. Sinclair -- chief executive officer and board of director.

Yeah. Well, let's talk about all the other areas in terms of what and I'll come back to digital and e-commerce. I think the opportunity for growth in our business through scale comes about I think I said in my remarks about how we can drive more efficiency. That efficiency -- I certainly think there's significant efficiency in supply chain going forward that we can build on and there's some very good work being done by the team. And now that I think will come to fruition over the next 12 months to 18 months in that space. I think there's very significant opportunity in terms of marketing and branding in terms of utilizing the scale that we're getting to and telling much more stories about what exactly this brand and the purpose of this brand stands for.

So I think both of those areas I think the resources can -- are in place and can be put in place to create some real strength in terms of how the brand can go to market. I think private label, there's an opportunity it's been getting well in the business. I think there's significant further opportunity to grow in private label, as we evolve scale going forward. And in terms of how we think about our pricing and promotional approach and working with our vendors and working with our -- I think there's opportunities to scale and working that efficiently. So supply chain branding, private label how we work in terms of promotion and pricing activity I think scale brings some benefit to that, I think we can bring some focus to.

With regards to digital and e-commerce I think the reality of it is we've done some really good stuff in that. I mean, we've talked in the market. I talked in our release about the absolute numbers in that and I think we will have to meet the customer where the customer needs to be met. And I think the tests we're doing on click-and-collect, I think has been -- and I need to get into in a little bit more detail, but I'm encouraged by the work that's been done so far in that within the scale of resources that we have. And from early experience of -- some people who have been very good at this in my experiences working hard to get that right in a few stores allows you to scale it going forward. And I think that's the right approach and our home delivery system and the work that we've been doing on that certainly growing at the moment. And it's something that as we work on this over the next few months, I think we'll think hard about to meet the customer the way the customer wants to be met in that space, if that answers your question sir.

Andrew Wolf -- Loop Capital Markets -- Analyst

Well, thank you. And just a follow-up on I think everybody's sort of asking -- it's interesting that your company or Sprouts is still doing very well with new stores and yet the comps aren't well. It's pretty unusual. But Jack, it sounds like to so some extent you think it's self-inflicted with the lack of clear pricing strategy. I assume that there's also some cannibalization in their but -- and in the Scott's question is also just the reality for competitive environment. So how would you sort of like -- I'll just frame it in a more general way what is your thought of why there's such a divergence between the new stores opening so strongly and the comp base being pretty flat?

Jack L. Sinclair -- chief executive officer and board of director.

So I think, I kind of think I've captured that over some of the questions we've just been talking about. I do believe it's in our own hands to manage that. Yes, we got to be very careful and watch the competitive dynamic and where we're operating now across -- I don't know how many. So many states we are operating in. There is a different dynamic and everyone from South Texas to Jersey to what we're doing in California and Arizona and the grocery market does change pretty dramatically from one market to the next. I think there's some opportunity for us to think about how we exercise, how we really look at competitive pricing within that context. But ultimately how we choose to manage the cost price inflation or deflation is in our own hands and we have a brand strength that I think protects us in terms of how we can manage that going forward. So -- and just to reiterate what we said, I do believe this is self-inflicted within our own hands to manage this.

Lawrence P. Molloy -- chief financial officer

And this is Chip. I also think that -- we do have really good new store productivity. I think that's a sign that says this brand hunts. It hunts in new markets. It's really encouraging to see the new customers that we're attracting in those new markets that we're going to and being able to attract them early. That's very encouraging. I'll also say on other side is we work really hard for the grand opening and then we don't always come back later with a really good marketing plan and a really good branding plan and really helping the customers throughout the market place understand who we are and what we stand for. And so we need to do a better job there and with that comes -- when you're building the kind of square footage even that we're building today there should be a natural comp coming from the maturation of the stores that we believe should be higher and it's not to our satisfaction today.

Andrew Wolf -- Loop Capital Markets -- Analyst

Thank you. Those were clarifying answers. I appreciate it.

Operator

Thank you. Our next question comes from Ken Goldman from JPMorgan. Your line is open.

Ken Goldman -- JPMorgan -- Analyst

Hi. Thank you, and please pass along best wishes to Jim and for his health. Two questions from me. Jack you're signing your name to guidance, but you're acknowledged today you don't have all the answers. Is it reasonable to maybe assume you're giving yourself some downside cushion as many new CEOs understandably do? Or really are you just very comfortable with the back half guidance, which I think is a lot lighter than people expected sort of being that true reflection of your outlook?

Lawrence P. Molloy -- chief financial officer

So Ken I know you addressed that question to Jack, but I'm going to take the answer.

Ken Goldman -- JPMorgan -- Analyst

That's why I'd take anybody.

Lawrence P. Molloy -- chief financial officer

For starters -- we got a month in the bag and the month -- so we're one month into the quarter and our comps are slightly positive. Well, I think there's somethings to consider. First and foremost, Jack and I have been in a building in terms of weeks not months and we're rigorously seeking to understand what's happening in the business what's happening -- what's working, what's not working, what's within our control, what's not within our control and there are early signs that Jack and the team are going to find opportunities that are going to really help us drive some traffic, drive some comps, do that with stable margins and deliver on the bottom-line.

But we delivered a 0.1% comp in Q1 and a 0.7% comp in the first half of the year and quite honestly, we believe it will be irresponsible for us to expect or communicate that there's going to be any sort of significant changes and trends in the very near-term. So that's why the guidance is what it is.

Ken Goldman -- JPMorgan -- Analyst

Okay. Thank you for that.

Lawrence P. Molloy -- chief financial officer

And I would say Jack -- unless you really need something else that Jack can add. I think that -- hopefully that answers your question.

Jack L. Sinclair -- chief executive officer and board of director.

I think that makes sense so that's a good one.

Ken Goldman -- JPMorgan -- Analyst

No. I think the tone of that answer was very clear. Thank you for that. And then I want to ask this question -- I'm not very good at making -- in sort of softening my questions so forgive the bluntness here.

Lawrence P. Molloy -- chief financial officer

Keep for that.

Ken Goldman -- JPMorgan -- Analyst

But I'm skeptical -- OK, yes. So that's true. I'm skeptical that you can grow your gross margin over time really not because of anything you're doing wrong just because the industry's tough. You talked today about stabilizing and maybe growing it. What is Sprouts' core competence? What does it do in your view? Again it is for you to review that that is better than its competitors. Because to me without that being a clear answer -- and you may not have it yet and so I'm putting you on the spot a little bit. I'm not sure how you can grow your gross margin over time. So again it's a little blunter than I wanted it to be but thank you for any answer you have.

Lawrence P. Molloy -- chief financial officer

That's alright, Ken. Blunt is OK. As it relates to growing we're not saying today that we're going to grow gross margins. That's not -- what we're saying it's stabilizing. We do believe -- now is there an opportunity to grow? Maybe. But right now we do believe that there is opportunity to stabilize our margins and still go to market and compete because we do have a differentiated product. We do have a differentiated experience and we're not a conventional grocery store. And so competing -- and we're allowing the conventionals to drive our business as opposed to leveraging the strengths that we have in our business and going forward and marching forward. And in that business case, there is an ability to stabilize your margins.

So I'll turn it over to Jack.

Jack L. Sinclair -- chief executive officer and board of director.

So I think the differentiation which is at the heart of your question as -- and I've worked in grocery over many countries in many places over the last few years. I've not been in a company where the morale and the sense of purpose within the organization is clearer.

So then how do you then translate that into a differentiation for our customers coming into the store? What does Sprouts have that other people don't have? The low format -- the low-profile nature of the format is very unique in terms of grocery. And it creates a sense of trust in what you're selling that I think is very unique.

When you don't cramp your store full and make it as high as you can make it and you're not frightened to show all aspects of the store, I think there's a real strength in that. I think departmentally, I think the way Sprouts presents, produce and the way it comes to the market in an organic nature all that in a way, puts in front for the customer is unique. So the presentation and the product and the pricing is pretty unique in produce.

Then you look at the bulk category. Now a few grocers do have done few things in bulk. But we're pretty unique in terms of being -- it being at the core of the format and I think increasingly with people's concern about packaging and the concern that people have around broader aspect of the grocery world, I think that we're well placed there.

The pricing advantage that allows to bring people to access product for the core trekking needs at 20%, 30% below what they would pay in packaged goods is again unique and the strength of vitamin and supplement department is very unique as a partner of grocery offer.

So the comp -- those three things are very unique and different and I think what the team have done in terms of around the dairy and the meat counters is pretty impressive as well. So there's some really format advantages, pricing advantages and product advantages that I think we can capitalize on and it's great credit to the people that built this business, Jim and many other people who built this business but they've created that differential in that mold going forward and that's something that I can build on.

Ken Goldman -- JPMorgan -- Analyst

Thank you.

Operator

Thank you. Our next question comes from Karen Short from Barclays. Your line is open.

Karen Short -- Barclays -- Analyst

Hi, thanks. And welcome Jack, look forward to working with you. A couple of questions. So just on the -- I guess the quarter end on guidance. In terms of the comp possibly turning negative in the second half and I know you said it's positive in July, but guidance implies negative for the second half.

Is that a function of the fact potentially that you do think you need to do some pricing adjustments across the store and that will take a hit on comp eventually to rebuild traffic maybe just a little clarification there?

Lawrence P. Molloy -- chief financial officer

Well Karen, thinking pragmatically, implying a negative comp on back half of the year when the first half was 0.7% would imply a negative 0.7%. So we're talking about basis points here. We're not talking about fundamental changes in the business.

And like I said, the backdrop here is -- we're still working through how to manage the business and it's going to take some time. And so for us to even imply that it's going to be significantly different so the difference between a 0.7% in the back half, front half and a minus 0.7% in the second half we're talking about -- and this in my opinion may not be others is, we're talking about a very, very tight range that at the end of the day does it buy us some flexibility? Maybe, but not a lot.

So we're really looking at how to improve on the business? Are we satisfied if it's a negative comp? Absolutely not. Are we going to drive toward something differently? Absolutely, so. But we're also going to do that in a methodical way and a thoughtful way till we build for the future. That's the best answer I can give you Karen.

Jack L. Sinclair -- chief executive officer and board of director.

And Karen, it's very early days for both of us to actually shape that exactly what the strategy is going to be around this. So I think to Chip's point given us the opportunity to really set in stone what we need to do going forward, I think is the right place to be for us at the moment.

Karen Short -- Barclays -- Analyst

And then just bigger picture, so I appreciate kind of the comments looking at companies kind of in their life stages I guess, with Five at one end of the spectrum and I guess Home Depot at the other. And obviously you said you'd like to gravitate more to the Five Below side of things.

But I guess maybe help me understand because you're kind of in a tough spot where you're small enough that you can be nimble, but you're big enough that you really need to keep investing in systems and things like that. So you have investment cycles that are just going to have to continue surfacing over time.

So I guess I'm not totally convinced that Five is the right analogy because it doesn't seem that it's going to be as easy for you to grow EBIT or EBITDA, I mean they're growing EBITDA 20%. Maybe a little more color there on how you can find that balance?

Lawrence P. Molloy -- chief financial officer

Well Karen I would tell you that, when I use the analogy of Five Below, I can give you 10 or 20 others that went through this cycle in the go-go days in the '80s and the 90s and the 2000's. And I know it's a different time and a different place, but I am using that you can look at the, alters of the world. I mean, there are a few retailers out there that have white space around them. And I think what's exciting about this business is that this business is one of them. We truly believe it's one of them. I think Jack came here believing that it's...

Jack L. Sinclair -- chief executive officer and board of director.

...Yeah.

Lawrence P. Molloy -- chief financial officer

...one of them. Is it 20% a year, like Five Below is doing? That's a pretty difficult scenario. Because it's a very -- they have a simple box. It's not a lot of cost to get into that box. It's not a lot of risk, because it's not complicated. And it's not a lot of cost. But is there a better -- can we -- is there a better place for us where we could grow the curve could look a little different? Absolutely, but some of the things we need to work on is, our box cost has gone up 50% over the last three to four years to build a box. Why is that? Well there's, a lot of reasons for that, that we need to really dig into and understand.

If we could build a box less expensively, we could take more risk and we could grow faster. But we need to do that work first. Because if we were going to build the same cost box today that we have, and just go out and start -- try to blow off 15% a year, you are absolutely correct that you would not be able to absorb that in your cost basis, and you would not be able to create any sort of legitimate earnings growth whatsoever. So we're trying to find that right balance. And all we're asking for is a little patience, over the next quarter -- in the next two quarters really, by the end of this year to where we can explain, where we think we can really take it. And what that algorithm that was brought up before will look like for us.

Karen Short -- Barclays -- Analyst

That's helpful. Thanks so much.

Operator

Thank you. Our next question comes from Chris Prykull from Goldman Sachs. Your line is open.

Chris Prykull -- Goldman Sachs -- Analyst

Good morning guys. Thank so much for taking my questions. I just wanted to ask about, operating margins. It looks like on a trailing 12-month basis, you're sitting around 4.1%. How are you thinking about that over the long term? And I understand it's early, but maybe just a little bit of color versus maybe some of your peers in the industry. I mean you still do have premium margins versus traditional grocers. I understand that Sprouts is different. But what are your thoughts there over the next couple of years?

Lawrence P. Molloy -- chief financial officer

Well, I think that's not that dissimilar than sort of the previous question as, when you're growing -- it depends on the pace of growth, right? So if you're going at a really fast pace, and you're having to put the infrastructure in place, and I'm talking about the store structure, the brick-and-mortar pieces of that then your operating margins going all the way down to operating margins, sometimes may go the other direction for a while.

Hopefully in a gross margin environment, it's flat. And then, the real operating margin opportunity is on the back end, when you're slowing down that growth. And you're going to the productivity model. As it relates to our competitors out there and where they are, most of the competitors that you're looking at with those really small margins, it's just -- it's a different model. It's a different business model. It's a different strategy. It's a different mix of goods in the stores. And we have -- in many ways, we sort of allowed ourselves to think that, that's how we should compete and who we're competing with, as opposed to leveraging what is so different about our business model. And going and building it. And that's kind of the shift, take back into control. What's great about this business and go grow, that as opposed to becoming something or not.

Jack L. Sinclair -- chief executive officer and board of director.

Yeah. So just, to kind of reinforce that, I do think the unique nature of our business should allow us to continue to produce, a superior margin performance to the traditional grocery space. There absolutely is no reason for that going forward, stabilizing gross margins and building on the efficiencies that we can get from scale. But its early days and we've got to work this one through going forward. And to Chip's point, the pace at which we launch new stores will always create some ups and downs in this going forward.

Chris Prykull -- Goldman Sachs -- Analyst

Got it, that's helpful. And then, I just want to go back to a previous question that was answered. If we had to hire sort of one to two or one to three key levers that you believe will reaccelerate comp growth. What do you think there'll be? And is price one of them? If you go back to the Whole Foods' story, comps well they tried to change price unsuccessfully. And we all know what happened there. So why will Sprouts be different?

Jack L. Sinclair -- chief executive officer and board of director.

Well, as I said, at the outset, I think from a pricing point of view we can stabilize margins by getting more effective at balancing this mix between EDLP and high-low, where I think we double down on both as opposed to it really being pushed -- having some precision by category and by market, as to how to effectively manage that. The second part of this is, I think from a branding and marketing point of few, we're fairly and traditional and how we approach this. We spend a lot of our money on print. The loan's moving on. And I think bringing the stories to life of what this brand is about in more effective way, I think will attract new customers.

There's a massive white space out there, even within our catchment area of people who are not shopping with us. And I think that's the opportunity we've got, in terms of changing the messaging around our business, so that we can get ourselves into a place where the two differentiations communicated more effectively, both within the stores that we're opening and within the existing store base. So that combination of managing our promotion and pricing more effectively and bringing a strong brand into the business, I think, will I hope over time see a significant improvement in our underlying business.

Chris Prykull -- Goldman Sachs -- Analyst

Great. And then, if I can just sneak one last one in. I think last quarter you said digital sales were about 2% of total sales. If they're up 170% in the quarter, does that mean that in-store comps are running down 3%? I mean, is that the math that we should be thinking about? And so, what's the update in terms of cannibalization from digital sales?

Lawrence P. Molloy -- chief financial officer

So we're doing almost -- not quite, but it's been a big ramp, we're at a point where we're doing almost $3 million a week there. When you're right at a 0.1% comp and honesty, I haven't gone back to do the backward math and what that means. But when you doing a 0.1% comp, clearly -- and you're growing your digital, it's going -- your core comp is going to be slightly negative. I mean, that's just math. So that is true. As it relates to being as negative as you're saying, I'd have to go back and do the math. I don't think it's that material at all. And then, as it relates to -- what was the final part there, Chris? I think that was it, right? Okay. All right, next caller, next question

Operator

Our next question comes from Edward Kelly from Wells Fargo. Your line is open.

Edward Kelly -- Wells Fargo -- Analyst

Yes. Hi, guys. Good morning and welcome Jack. I just wanted to ask about how much time you've had actually to sort of think about the business and where you need to go. So, I hear you loud and clear today on the call around confidence in the competitive position, the differentiation, the idea that growth will not slow. But the financial results do raise questions about that, whether the comp, the margin seemingly new store returns. I guess have you seen enough, Jack, to give you confidence that, that's all right, that you should still be growing stores the way that you have in the past? I understand the narrative, at the end of the day, is the reason I want to keep that narrative. I'm just kind of curious as to your confidence and how much you've seen so far?

Jack L. Sinclair -- chief executive officer and board of director.

Yes. I think, it's a good question and I think fundamentally, as I preface the whole conversation that I'm having with you today is, it's early days in terms of as I think this one through. But I've spent a lot of time in stores and I've spent a lot of time with the team here over the few weeks that I've been here and I have got -- it builds confidence, because when you look at the numbers, you maybe wouldn't feel as confident as I do. But when I need -- the foundation of the business is so strong, so unique and so different, that it gives me a lot of confidence that we can harness that. And I think the other thing that gives me a little confidence is, when you talk to customers inside the store they have a real passion and love for the brand, the people, the customers that are there. And the more I experience that, the more confident I, get going forward, that we'll get real differentiation and a real chance of being really the leading grocer across the country, if we can get this right.

And I do believe that, from a marketing and a branding point of view, we've been very traditional in our mediation or articulation of our brand and I think there's huge opportunity in that. And I do believe the task is that we have that are so different. We could be telling the story so much more effectively about the whys and wherefores of the benefits that customers can get in terms of the strength for healthy eating and this trend for looking after their family. Most customers and grocers are just trying to look after their families a little bit better and I think the reality of us really positioning this healthy-for-less business model, is something that gives me a lot of confidence. Now putting all that into numbers is going to take some time to get to that point, but certainly to the question, I have a lot of confidence that the underlying performance of the business should be and could be much better.

Edward Kelly -- Wells Fargo -- Analyst

And just related to that Jack, could you help us understand and I know quantitatively it's not fair to ask you this question, but just qualitatively, the amount of investment -- as the company to where it needs to be. And I think there was an expectation in prior management that the 2019 would be the bottom from a margin -- really seemed fair to -- for us to expect that, given that strategy would change a bit. So any thoughts or help around that and just the cadence of how we should think about the margin, I mean, in terms of 2020 and whether we could see it be lower before it stabilizes or goes higher?

Jack L. Sinclair -- chief executive officer and board of director.

I got caught a little bit in the middle of that call, in the middle of that question, maybe just -- if you don't mind, just clarifying it. I got bits of it and you cut out in the middle of couple of bits there so. Can you just maybe ask it again? I'd appreciate it, around the margin question.

Edward Kelly -- Wells Fargo -- Analyst

Yes. The question was really just around margin and how prior management, I think, had an assumption around some stabilization there for 2019 and it just doesn't really seem fair for us to hold you to that, given that it does seem like there is investment that needs to be made. And I know, you don't want to quantify investment, but qualitatively can you just talk about whether that needs to accelerate from here before margins can stabilize?

Jack L. Sinclair -- chief executive officer and board of director.

Well, again, I think you're right. So from a qualitative point of view, I believe we could be more effective at passing on the inflationary costs, food cost so that we don't have to see diluting gross margins going forward. The timing of that is a good person. I don't know exactly or not. We're in a position to clarify that right now, but going forward this should be a stable -- from a stable margin to growing margin over the next three to five years. There's no reason why that can't happen.

Lawrence P. Molloy -- chief financial officer

And I would say that you're talking about investments when you go down to the operating line a lot of that's going to depend on how we determine sort of new store growth the trajectory of that and then as it relates to any other infrastructure, we have some infrastructure needs in supply chain and some IT infrastructure needs there. But we have made a tremendous amount of investments in the past and I don't see the pace of investments in the outside of new stores and I don't see the pace of investments really accelerating at all, if nothing else will sort of be muted and hopefully the top line will leverage against that ongoing same amount of growth or same amount of...

Edward Kelly -- Wells Fargo -- Analyst

Great. Thanks guys. That's helpful.

Lawrence P. Molloy -- chief financial officer

Yeah.

Operator

Thank you. Our next question comes from Mark Carden from UBS. Your line is open.

Mark Carden -- UBS -- Analyst

Good morning. Thanks a lot of taking my questions. So another question for you guys on scale. As you grow from being really an effective regional player to more of a national retailer, how do you avoid running into supply issues in produce. And more specifically is it getting any tougher to find enough attractively priced produce opportunities from growers that you can then really promote heavily across your store base. And Jack I know Walmart's mix is a bit different, but is there any lessons you can drop on from their experience there? Thanks.

Jack L. Sinclair -- chief executive officer and board of director.

Great. So, in terms of produce sourcing, which I think is something that I have spent a lot of time looking at over the last level. One of the things is that we've got five produce distribution centers and in that those distribution centers we have our own sourcing team. They can take advantage of the opportunities that exist in growing seasons across the country effectively. And the expertise of that team is pretty good, so I've been pretty impressed by the opportunity that these guys have got in terms of as we open new stores in different places that we can source effectively through the knowledge and then working with the growers and maybe expanding the repertoire that we're operating locally because we build on that expertise. And I think we're well placed to grow in different markets because of that.

You identified one of the challenges which is I talked about earlier, which is the supply chain challenge that links with that. Are we distributing things too far in terms of -- not can we source it, but can we get it to the customer in the optimal condition, and that's something that we're going to do a lot work on to get that right. But the reality of growing in the United States is people are buying produce all over the United States. So there's no reason why we can't source produce effectively all over the states, and I think the team are pretty well placed to do that effectively. With regards to Walmart, we did very similar things at Walmart when I was there in terms of trying to get much more closer to the drawing base. I'm working that one through and I think you're all pretty aware of this strength of Walmart's supply chain and distribution. I think there's some lessons we can learn from that.

Operator

Thank you. Our next question comes from Christopher Mandeville from Jefferies. Your line is open. Please check that your line is not on mute.

And we'll move onto our next caller. Our next caller comes from Chuck Grom from Gordon Haskett. Your line is open.

Chuck Grom -- Gordon Haskett -- Analyst

Hey, good morning. And congrats Jack on the new position well deserved.

Jack L. Sinclair -- chief executive officer and board of director.

Thank you.

Chuck Grom -- Gordon Haskett -- Analyst

I just to keep the focus here on the comp and just trying to unpack really the difference between the older stores being weaker versus the waterfall changing and I'm just trying to understand both dynamics considering now to your point Chip that if we're doing about $3 million in revenue from digital that suggests your store is probably comping down say one to two points. So just can help us look over the past couple of quarters versus let's say the past four to five years which dynamics changed? Has the waterfall changed or has the older stores just not performing as well?

Lawrence P. Molloy -- chief financial officer

I don't have in front of me or near the last couple of years, but my -- I might go off on a limb here from what I have seen is that it's kind of been both, right? So it's been -- we heard -- when you've gotten down to a 0.1% comp that shows all the pieces. So one of course when thing's not working if your core stores are coming negative or your new stores aren't performing, the encouraging part here is the core stores are negative, but not -- now I'm talking about the old vintages' stores yes of course they're negative slightly negative. We are still seeing a ramp on the new stores, but we're not seeing the ramp that we wanted in new stores, but some of that is -- what I would argue is the way we have manage it. So, it's a mix on both sides of the equation and that shows all your works when you got a 0.1% comp.

So, we have work to do on both. You've heard a lot of comments that Jack's made today about really the core stores. At the end of the day, how can you drive more traffic, how can you then turn that into comp, and then how you can do that in a profitable way. And there is a lot of work to be done on the new storefront I believe as well. Where we put the stores, the concentration of new stores, the cost of new stores and the size of new stores, how much money we invest in new stores, in the very beginning for all incentive purposes sort of juicing up the front end. There is work and analysis that needs to be done there, that I think there's a tremendous amount of opportunity in the future to change that trajectory in a positive way, but of course with new real estate that's going to take 18 to 24 months to see that change in a meaningful way.

Jack L. Sinclair -- chief executive officer and board of director.

And Chuck just from a-regarding the question around digital and the physical sales in the stores. I think increasingly and the way philosophically I look at that is if the customer chooses to buy digitally or buy or we see it delivered, but as it's still upsetting the Sprouts standard. I would put the two together in how we about things. Increasingly, that's the way that we have to meet the customer where the customer wants to buy, wants to access the brand. And if we got the right offer, we'll have to find a way of making sure it gets to them appropriately. So the overall comp that matters.

Lawrence P. Molloy -- chief financial officer

Yeah. And someone asked earlier, that was the part I forgot. It was the cannibalization, because of the digital now it's coming to mind again. So, of course, there's going to be cannibalization in the digital world. What's the really encouraging part is that large portion of those customers that are shopping with us digitally are doing so. There are they're new customers. That's the piece to look at, not what's being cannibalized. We're touching new customers. New customers that really don't know our brand and never been in our stores, and they're having it delivered and if you talk to our partner there on the digital side, they would tell you that it's pretty amazing to look at how new customers are attracted to our brand without ever having been in our stores. So that's the positive side of the digital equation.

Chuck Grom -- Gordon Haskett -- Analyst

Okay. And just to my follow-up. Jack, you said something I haven't heard Sprouts say in a long time is that the mix of the high-low versus EDLP has gotten out of sync. So, maybe if you could just flush that out for us in a relatively recent phenomenon and I guess how long do you think it'll take you to fix that?

Jack L. Sinclair -- chief executive officer and board of director.

Hey, I don't know whether it's been a relatively recent phenomenon or not. You need to dig into the background to actually understand that I'm really looking at today in terms of how that plays out. But going forward, I think we got-you got to be very careful with how you manage those things and how you're doing -- disrupt the business too much in making those changes. But certainly, we have to understand the prices, the combination of both, we can't look at them independently with the combination of what you're investing in promotion and what you're investing in your base pricing combined to create a value for the customer. And that's increasingly what we'll be working on. Hopefully, it won't take too long to get to the bottom of that.

Operator

Thank you. And that does conclude today's question-and-answer session for the conference. I will now like to turn the call back over to Jack Sinclair for any closing remarks.

Jack L. Sinclair -- chief executive officer and board of director.

Yeah. So thanks very much for your interest in the company, and thanks very much for your time today and your attention too. It is great to be part of this business and thanks very much for being here today. I really look forward to all our future updates. So, thanks.

Operator

[Operator Closing Remarks]

Duration: 64 minutes

Call participants:

Susannah Livingston -- Vice President of Investor Relations

Lawrence P. Molloy -- chief financial officer

Jack L. Sinclair -- chief executive officer and board of director.

Kelly Bania -- BMO Capital Markets -- Analyst

Rupesh Parikh -- Oppenheimer -- Analyst

Scott Mushkin -- Wolfe Research -- Analyst

Chuck Cerankosky -- Northcoast Research -- Analyst

Andrew Wolf -- Loop Capital Markets -- Analyst

Ken Goldman -- JPMorgan -- Analyst

Karen Short -- Barclays -- Analyst

Chris Prykull -- Goldman Sachs -- Analyst

Edward Kelly -- Wells Fargo -- Analyst

Mark Carden -- UBS -- Analyst

Chuck Grom -- Gordon Haskett -- Analyst

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