How Sierra Oncology Inc (NASDAQ:SRRA) Can Impact Your Portfolio Volatility

Anyone researching Sierra Oncology Inc (NASDAQ:SRRA) might want to consider the historical volatility of the share price. Volatility is considered to be a measure of risk in modern finance theory. Investors may think of volatility as falling into two main categories. 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. Any stock with a beta of greater than one is considered more volatile than the market, while those with a beta below one are either less volatile or poorly correlated with the market.

Check out our latest analysis for Sierra Oncology

What SRRA’s beta value tells investors

Zooming in on Sierra Oncology, we see it has a five year beta of 1.72. This is above 1, so historically its share price has been influenced by the broader volatility of the stock market the market. If the past is any guide, we would expect that Sierra Oncology shares will rise quicker than the markets in times of optimism, but fall faster in times of pessimism. 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 Sierra Oncology fares in that regard, below.

NasdaqGM:SRRA Income Statement Export November 21st 18
NasdaqGM:SRRA Income Statement Export November 21st 18

Does SRRA’s size influence the expected beta?

Sierra Oncology is a rather small company. It has a market capitalisation of US$127m, which means it is probably under the radar of most investors. Relatively few investors can influence the price of a smaller company, compared to a large company. This could explain the high beta value, in this case.

What this means for you:

Since Sierra Oncology 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. In order to fully understand whether SRRA is a good investment for you, we also need to consider important company-specific fundamentals such as Sierra Oncology’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 SRRA’s future growth? Take a look at our free research report of analyst consensus for SRRA’s outlook.
  2. Financial Health: Are SRRA’s operations financially sustainable? Balance sheets can be hard to analyze, which is why we’ve done it for you. Check out our financial health checks here.
  3. Other High-Performing Stocks: Are there other stocks that provide better prospects with proven track records? Explore our free list of these great stocks here.

To help readers see past the short term volatility of the financial market, we aim to bring you a long-term focused research analysis purely driven by fundamental data. Note that our analysis does not factor in the latest price-sensitive company announcements.

The author is an independent contributor and at the time of publication had no position in the stocks mentioned. For errors that warrant correction please contact the editor at editorial-team@simplywallst.com.

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