If you own shares in Aurora Minerals Limited (ASX:ARM) then it’s worth thinking about how it contributes to the volatility of your portfolio, overall. In finance, Beta is a measure of volatility. 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 are more sensitive to general market forces than others. Some investors use beta as a measure of how much a certain stock is impacted by market risk (volatility). While we should keep in mind that Warren Buffett has cautioned that ‘Volatility is far from synonymous with risk’, beta is still a useful factor to consider. To make good use of it you must first know 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.
View our latest analysis for Aurora Minerals
What does ARM’s beta value mean to investors?
Zooming in on Aurora Minerals, we see it has a five year beta of 1.48. 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 Aurora Minerals shares will rise quicker than the markets in times of optimism, but fall faster in times of pessimism. 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 Aurora Minerals’s revenue and earnings in the image below.
Could ARM’s size cause it to be more volatile?
Aurora Minerals is a noticeably small company, with a market capitalisation of AU$2.5m. Most companies this size are not always actively traded. It has a relatively high beta, suggesting it is fairly actively traded for a company of its size. Because it takes less capital to move the share price of a small company like this, when a stock this size is actively traded it is quite often more sensitive to market volatility than similar large companies.
What this means for you:
Since Aurora Minerals tends to moves up when the market is going up, and down when it’s going down, potential investors may wish to reflect on the overall market, when considering the stock. This article aims to educate investors about beta values, but it’s well worth looking at important company-specific fundamentals such as Aurora Minerals’s financial health and performance track record. I urge you to continue your research by taking a look at the following: