Anyone researching Biokarpet SA (ATH:BIOKA) 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 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 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. 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.

View our latest analysis for Biokarpet

What we can learn from BIOKA’s beta value

Zooming in on Biokarpet, 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 this beta value holds true in the future, Biokarpet 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 Biokarpet fares in that regard, below.

Does BIOKA’s size influence the expected beta?

Biokarpet is a rather small company. It has a market capitalisation of €15m, 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 Biokarpet 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 Biokarpet’s financial health and performance track record. I highly recommend you dive deeper by considering the following: