Anyone researching Beijing Capital International Airport Company Limited (HKG:694) 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. First, we have company specific volatility, which is the price gyrations of an individual stock. Holding at least 8 stocks can reduce this kind of risk across a portfolio. 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 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.
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What 694's beta value tells investors
Beijing Capital International Airport has a five-year beta of 1.08. This is reasonably close to the market beta of 1, so the stock has in the past displayed similar levels of volatility to the overall market. If the future looks like the past, we could therefore consider it likely that the stock price will experience share price volatility that is roughly similar to the overall market. 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 Beijing Capital International Airport fares in that regard, below.
Does 694's size influence the expected beta?
Beijing Capital International Airport is a reasonably big company, with a market capitalisation of HK$29b. Most companies this size are actively traded with decent volumes of shares changing hands each day. We shouldn't be surprised to see a large company like this with a beta value quite close to the market average. Large companies often move roughly in line with the market. In part, that's because there are fewer individual events that are signficant enough to markedly change the value of the stock (compared to small companies, at least).
What this means for you:
It is probable that there is a link between the share price of Beijing Capital International Airport and the broader market, since it has a beta value quite close to one. However, long term investors are generally well served by looking past market volatility and focussing on the underlying development of the business. If that's your game, metrics such as revenue, earnings and cash flow will be more useful. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Beijing Capital International Airport’s financial health and performance track record. I urge you to continue your research by taking a look at the following:
Future Outlook: What are well-informed industry analysts predicting for 694’s future growth? Take a look at our free research report of analyst consensus for 694’s outlook.
Past Track Record: Has 694 been consistently performing well irrespective of the ups and downs in the market? Go into more detail in the past performance analysis and take a look at the free visual representations of 694's historicals for more clarity.
Other Interesting Stocks: It's worth checking to see how 694 measures up against other companies on valuation. You could start with this free list of prospective options.
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If you spot an error that warrants correction, please contact the editor at email@example.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.