Anyone researching Geo Limited (NZSE:GEO) 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 type is company specific volatility. Investors use diversification across uncorrelated stocks to reduce this kind of price volatility across the portfolio. 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 mimic the volatility of the market quite closely, while others demonstrate muted, exagerrated or uncorrelated price movements. 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.
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View our latest analysis for Geo
What we can learn from GEO's beta value
Given that it has a beta of 1.42, we can surmise that the Geo share price has been fairly sensitive to market volatility (over the last 5 years). If the past is any guide, we would expect that Geo 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 Geo's revenue and earnings in the image below.
Does GEO's size influence the expected beta?
Geo is a rather small company. It has a market capitalisation of NZ$9.7m, which means it is probably under the radar of most investors. It takes less money to influence the share price of a very small company. This may explain the excess volatility implied by this beta value.
What this means for you:
Since Geo 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 Geo’s financial health and performance track record. I highly recommend you dive deeper by considering the following: