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How Does Sirius Minerals Plc (LON:SXX) Affect Your Portfolio Volatility?

Simply Wall St

Anyone researching Sirius Minerals Plc (LON:SXX) might want to consider the historical volatility of the share price. Modern finance theory considers volatility to be a measure of risk, and there are two main types of price volatility. The first category is company specific volatility. This can be dealt with by limiting your exposure to any particular stock. The second type is the broader market volatility, which you cannot diversify away, since it arises from macroeconomic factors which directly affects all the stocks on the market.

Some stocks are more sensitive to general market forces than others. Beta is a widely used metric to measure a stock's exposure to market risk (volatility). Before we go on, it's worth noting that Warren Buffett pointed out in his 2014 letter to shareholders that 'volatility is far from synonymous with risk.' Having said that, beta can still be rather useful. The first thing to understand about beta is that the beta of the overall market is 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 Sirius Minerals

What does SXX's beta value mean to investors?

Sirius Minerals has a five-year beta of 1.07. 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. Using history as a guide, we might surmise that the share price is likely to be influenced by market voltility going forward but it probably won't be particularly sensitive to it. Beta is worth considering, but it's also important to consider whether Sirius Minerals is growing earnings and revenue. You can take a look for yourself, below.

LSE:SXX Income Statement, July 31st 2019

How does SXX's size impact its beta?

Sirius Minerals is a small company, but not tiny and little known. It has a market capitalisation of UK£1.0b, which means it would be on the radar of intstitutional investors. Small companies often have a high beta value because the stock price can move on relatively low capital flows. So it's interesting to note that this stock historically has a beta value quite close to one.

What this means for you:

Sirius Minerals 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 SXX is a good investment for you, we also need to consider important company-specific fundamentals such as Sirius Minerals’s financial health and performance track record. I urge you to continue your research by taking a look at the following:

  1. Future Outlook: What are well-informed industry analysts predicting for SXX’s future growth? Take a look at our free research report of analyst consensus for SXX’s outlook.
  2. Past Track Record: Has SXX been consistently performing well irrespective of the ups and downs in the market? Go into more detail in the past performance analysis and take a look at the free visual representations of SXX's historicals for more clarity.
  3. Other Interesting Stocks: It's worth checking to see how SXX measures up against other companies on valuation. You could start with this free list of prospective options.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.