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If you're interested in CGN New Energy Holdings Co., Ltd. (HKG:1811), 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. 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. 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.
Check out our latest analysis for CGN New Energy Holdings
What we can learn from 1811's beta value
Looking at the last five years, CGN New Energy Holdings has a beta of 1.23. The fact that this is well above 1 indicates that its share price movements have shown sensitivity to overall market volatility. If the past is any guide, we would expect that CGN New Energy Holdings 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 CGN New Energy Holdings's revenue and earnings in the image below.
Could 1811's size cause it to be more volatile?
CGN New Energy Holdings is a small company, but not tiny and little known. It has a market capitalisation of HK$4.8b, which means it would be on the radar of intstitutional investors. It's not particularly surprising that it has a higher beta than the overall market. That's because it takes less money to influence the share price of a smaller company, than a bigger company.