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If you own shares in Sheffield Resources Limited (ASX:SFX) then it's worth thinking about how it contributes to the volatility of your portfolio, overall. In finance, Beta is a measure of volatility. Modern finance theory considers volatility to be a measure of risk, and there are two main types of price volatility. The first type is company specific volatility. Investors use diversification across uncorrelated stocks to reduce this kind of price volatility across the portfolio. The other type, which cannot be diversified away, is the volatility of the entire market. Every stock in the market is exposed to this volatility, which is linked to the fact that stocks prices are correlated in an efficient market.
Some stocks are more sensitive to general market forces than others. Beta can be a useful tool to understand how much a stock is influenced by market risk (volatility). However, Warren Buffett said 'volatility is far from synonymous with risk' in his 2014 letter to investors. So, while useful, beta is not the only metric to consider. To use beta as an investor, you must first understand that the overall market has a beta of one. A stock with a beta greater than one is more sensitive to broader market movements than a stock with a beta of less than one.
See our latest analysis for Sheffield Resources
What does SFX's beta value mean to investors?
Sheffield Resources has a five-year beta of 0.99. This is reasonably close to the market beta of 1, so the stock has in the past displayed similar levels of volatility to the overall market. If the future looks like the past, we could therefore consider it likely that the stock price will experience share price volatility that is roughly similar to the overall market. Many would argue that beta is useful in position sizing, but fundamental metrics such as revenue and earnings are more important overall. You can see Sheffield Resources's revenue and earnings in the image below.
Does SFX's size influence the expected beta?
Sheffield Resources is a rather small company. It has a market capitalisation of AU$97m, which means it is probably under the radar of most investors. It doesn't take much money to really move the share price of a company as small as this one. That makes it somewhat unusual that it has a beta value so close to the overall market.
What this means for you:
Sheffield Resources has a beta value quite close to that of the overall market. That doesn't tell us much on its own, so it is probably worth considering whether the company is growing, if you're looking for stocks that will go up more than the overall market. In order to fully understand whether SFX is a good investment for you, we also need to consider important company-specific fundamentals such as Sheffield Resources’s financial health and performance track record. I urge you to continue your research by taking a look at the following: