If you're interested in Aerie Pharmaceuticals Inc (NASDAQ:AERI), then you might want to consider its beta (a measure of share price volatility) in order to understand how the stock could impact your portfolio. 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 category is company specific volatility. This can be dealt with by limiting your exposure to any particular stock. 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 see their prices move in concert with the market. Others tend towards stronger, gentler or unrelated 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.
View our latest analysis for Aerie Pharmaceuticals
What does AERI's beta value mean to investors?
As it happens, Aerie Pharmaceuticals has a five year beta of 0.98. This is fairly close to 1, so the stock has historically shown a somewhat similar level of volatility as the market. While history does not always repeat, this may indicate that the stock price will continue to be exposed to market risk, albeit not overly so. 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 Aerie Pharmaceuticals's revenue and earnings in the image below.
How does AERI's size impact its beta?
Aerie Pharmaceuticals is a small cap stock with a market capitalisation of US$2.0b. Most companies this size are actively traded. It takes less capital to move the share price of small companies, and they are also more impacted by company specific events, so it's a bit of a surprise that the beta is so close to the overall market.
What this means for you:
Since Aerie Pharmaceuticals has a beta close to one, it will probably show a positive return when the market is moving up, based on history. If you're trying to generate better returns than the market, it would be worth thinking about other metrics such as cashflows, dividends and revenue growth might be a more useful guide to the future. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Aerie Pharmaceuticals’s financial health and performance track record. I highly recommend you dive deeper by considering the following:
- Future Outlook: What are well-informed industry analysts predicting for AERI’s future growth? Take a look at our free research report of analyst consensus for AERI’s outlook.
- Past Track Record: Has AERI 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 AERI's historicals for more clarity.
- Other Interesting Stocks: It's worth checking to see how AERI measures up against other companies on valuation. You could start with this free list of prospective options.
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.
Simply Wall St analyst Simply Wall St and Simply Wall St have no position in any of the companies mentioned. This article is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.