How Bank of Greece (ATH:TELL) Can Impact Your Portfolio Volatility

If you're interested in Bank of Greece (ATH:TELL), 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. 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 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.

See our latest analysis for Bank of Greece

What does TELL's beta value mean to investors?

Bank of Greece has a five-year beta of 0.98. 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. While history does not always repeat, this may indicate that the stock price will continue to be exposed to market risk, albeit not overly so. Beta is worth considering, but it's also important to consider whether Bank of Greece is growing earnings and revenue. You can take a look for yourself, below.

How does TELL's size impact its beta?

With a market capitalisation of €276m, Bank of Greece is a very small company by global standards. It is quite likely to be unknown to most investors. Companies this small are usually more volatile than the market, whether or not that volatility is correlated. Therefore, it's a bit surprising to see that this stock has a beta value so close to the overall market.

What this means for you:

Bank of Greece has a beta value quite close to that of the overall market. That doesn't tell us much on its own, so it is probably worth considering whether the company is growing, if you're looking for stocks that will go up more than the overall market. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Bank of Greece’s financial health and performance track record. I highly recommend you dive deeper by considering the following:

1. Future Outlook: What are well-informed industry analysts predicting for TELL’s future growth? Take a look at our free research report of analyst consensus for TELL’s outlook.
2. Past Track Record: Has TELL 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 TELL's historicals for more clarity.
3. Other Interesting Stocks: It's worth checking to see how TELL measures up against other companies on valuation. You could start with this free list of prospective options.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.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.