3 Top Dow Stocks of 2017: Are They Still Buys?

Any way you look at it, 2017 was a great year for the Dow Jones Industrial Average (DJINDICES: ^DJI). The Dow rose nearly 26% this year, its best performance since 2013. Of the 30 stocks in the index, only five didn't post gains during 2017.

But 2017 was even better than great for three Dow stocks. Boeing (NYSE: BA), Caterpillar (NYSE: CAT), and Apple (NASDAQ: AAPL) enjoyed stellar performances this year. Here's how these winners racked up huge gains -- and whether they're still smart picks after their tremendous runs in 2017.

2017 with chart going up
2017 with chart going up

Image source: Getty Images.

Boeing

Boeing is by far the most successful Dow stock of the year, with its share price skyrocketing 90%. In 2016, the aircraft manufacturer saw its stock climb less than 8%. What happened to put the air beneath Boeing's wings?

The company started off 2017 with a first-quarter revenue decline. In April, it even announced that it was laying off hundreds of employees. You might wonder how the stock performed so well in the midst of such seemingly bad news. The answer is that there's more to the story.

First of all, Boeing's earnings and cash flow improved significantly in 2017. The sluggish revenue reported in the first quarter gave way to stronger revenue by the third quarter. Along the way, Boeing snagged multiple multibillion-dollar defense contracts.

The aerospace giant also saw lots of interest in its new 737 MAX 10 -- the biggest 737 jet yet. Boeing's 787 Dreamliner widebody airplanes were a solid hit as well for the company in 2017.

Investors didn't just enjoy Boeing's tremendous stock gains. The company continued to pay out an attractive quarterly dividend throughout 2017, boosting Boeing's total return for the year above 95% with reinvested dividends. And while it won't make a difference for this year, in December Boeing increased its dividend for 2018 by more than 20%.

Excavators lined up
Excavators lined up

Image source: Getty Images.

Caterpillar

Caterpillar ranks as the No. 2 Dow stock of 2017, with its stock vaulting 70% higher. It's the second year in a row for the construction and mining equipment maker to post market-beating gains. In 2016, Caterpillar's share price rose 36%.

You'd expect a stock that turns in this kind of performance would also generate strong earnings growth. And that's exactly what Caterpillar has done. In the third quarter of 2017, for example, the company's earnings per share more than triple what it reported in the prior-year period.

There are several reasons behind Caterpillar's impressive numbers. One of the biggest is increased infrastructure spending in China. It certainly didn't hurt Caterpillar that China enjoyed stronger-than-expected GDP growth in 2017. However, there were also some positives closer to home. Caterpillar benefited from higher spending in the oil and gas industry in North America, driven by higher oil prices. In addition, the U.S. housing market continued to grow, while the picture for non-residential construction improved.