If you're interested in Investors Bancorp, Inc. (NASDAQ:ISBC), 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. 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 are more sensitive to general market forces than others. Beta is a widely used metric to measure a stock's exposure to market risk (volatility). Before we go on, it's worth noting that Warren Buffett pointed out in his 2014 letter to shareholders that 'volatility is far from synonymous with risk.' Having said that, beta can still be rather useful. The first thing to understand about beta is that the beta of the overall market is 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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Check out our latest analysis for Investors Bancorp
What we can learn from ISBC's beta value
Given that it has a beta of 0.87, we can surmise that the Investors Bancorp share price has not been strongly impacted by broader market volatility (over the last 5 years). 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 0.87. 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 Investors Bancorp's revenue and earnings in the image below.
How does ISBC's size impact its beta?
Investors Bancorp is a fairly large company. It has a market capitalisation of US$2.9b, which means it is probably on the radar of most investors. When large companies like this one have a low beta value, there is usually some other factor that is having an outsized impact on the share price. For example, a business with significant fixed regulated assets might earn a reasonably predictable return, regardless of broader macroeconomic factors. Alternatively, lumpy earnings might mean minimal share price correlation with the broader market.
What this means for you:
One potential advantage of owning low beta stocks like Investors Bancorp 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. In order to fully understand whether ISBC is a good investment for you, we also need to consider important company-specific fundamentals such as Investors Bancorp's financial health and performance track record. I urge you to continue your research by taking a look at the following:
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 firstname.lastname@example.org. 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.