If you own shares in Zensun Enterprises Limited (HKG:185) then it's worth thinking about how it contributes to the volatility of your portfolio, overall. In finance, Beta is a measure of volatility. 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 category is company specific volatility. This can be dealt with by limiting your exposure to any particular stock. 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. 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 Zensun Enterprises

What we can learn from 185's beta value

Zooming in on Zensun Enterprises, we see it has a five year beta of 0.82. This is below 1, so historically its share price has been rather independent from the market. If history is a good guide, owning the stock should help ensure that your portfolio is not overly sensitive to market volatility. Beta is worth considering, but it's also important to consider whether Zensun Enterprises is growing earnings and revenue. You can take a look for yourself, below.

Does 185's size influence the expected beta?

Zensun Enterprises is a rather small company. It has a market capitalisation of HK$3.5b, which means it is probably under the radar of most investors. Companies with market capitalisations around this size often show poor correlation with the broader market because market volatility is overshadowed by company specific events, or other factors. It's worth checking to see how often shares are traded, because very small companies with very low beta values are often only thinly traded.

What this means for you:

One potential advantage of owning low beta stocks like Zensun Enterprises is that your overall portfolio won't be too sensitive to overall market movements. However, this can be a blessing or a curse, depending on what's happening in the broader market. This article aims to educate investors about beta values, but it's well worth looking at important company-specific fundamentals such as Zensun Enterprises’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 185’s future growth? Take a look at our free research report of analyst consensus for 185’s outlook.

2. Past Track Record: Has 185 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 185's historicals for more clarity.

3. Other Interesting Stocks: It's worth checking to see how 185 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.