Anyone researching UCO Bank (NSE:UCOBANK) 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 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 see their prices move in concert with the market. Others tend towards stronger, gentler or unrelated 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 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.

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View our latest analysis for UCO Bank

What UCOBANK's beta value tells investors

Zooming in on UCO Bank, we see it has a five year beta of 0.89. This is below 1, so historically its share price has been rather independent from the market. This suggests that including it in your portfolio will reduce volatility arising from broader market movements, assuming your portfolio's weighted average beta is higher than 0.89. 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 UCO Bank's revenue and earnings in the image below.

How does UCOBANK's size impact its beta?

UCO Bank is a small cap stock with a market capitalisation of ₹127b. Most companies this size are actively traded. Small cap stocks ofthen have a higher beta than the overall market. However, small companies can also be strongly impacted by company specific developments, which can move the share price in ways that are unrelated to the broader market. That could explain why this one has a low beta value.