If you own shares in Select Medical Holdings Corporation (NYSE:SEM) 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 category is company specific volatility. This can be dealt with by limiting your exposure to any particular stock. The second sort is caused by the natural volatility of markets, overall. For example, certain macroeconomic events will impact (virtually) all stocks on the market.
Some stocks mimic the volatility of the market quite closely, while others demonstrate muted, exagerrated or uncorrelated price movements. 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 below one is either less volatile than the market, or more volatile but not corellated with the overall market. In comparison a stock with a beta of over one tends to be move in a similar direction to the market in the long term, but with greater changes in price.
What does SEM's beta value mean to investors?
Given that it has a beta of 1.29, we can surmise that the Select Medical Holdings share price has been fairly sensitive to market volatility (over the last 5 years). If this beta value holds true in the future, Select Medical Holdings shares are likely to rise more than the market when the market is going up, but fall faster when the market is going down. Share price volatility is well worth considering, but most long term investors consider the history of revenue and earnings growth to be more important. Take a look at how Select Medical Holdings fares in that regard, below.
Could SEM's size cause it to be more volatile?
Select Medical Holdings is a fairly large company. It has a market capitalisation of US$2.4b, which means it is probably on the radar of most investors. It has a relatively high beta, suggesting it may be somehow leveraged to macroeconomic conditions. For example, it might be a high growth stock with lots of investors trading the shares. It's notable when large companies to have high beta values, because it usually takes substantial capital flows to move their share prices.
What this means for you:
Since Select Medical Holdings has a reasonably high beta, it's worth considering why it is so heavily influenced by broader market sentiment. For example, it might be a high growth stock or have a lot of operating leverage in its business model. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Select Medical Holdings’s financial health and performance track record. I urge you to continue your research by taking a look at the following:
- Future Outlook: What are well-informed industry analysts predicting for SEM’s future growth? Take a look at our free research report of analyst consensus for SEM’s outlook.
- Past Track Record: Has SEM 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 SEM's historicals for more clarity.
- Other Interesting Stocks: It's worth checking to see how SEM measures up against other companies on valuation. You could start with this free list of prospective options.
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If you spot an error that warrants correction, please contact the editor at email@example.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.