Geopolitical tensions, uncertainty around interest rates, and rapid shifts of capital between sectors make picking individual stocks in 2026 a more challenging discipline than in quieter years. It is in such an environment that an indicator that many investors overlook while the market is rising becomes more important: beta.

Beta measures how strongly a stock's price moves relative to the overall market. A value of 1 indicates that the title (stock) moves, on average, as much as the index. A beta greater than 1 indicates greater sensitivity and greater swings in both directions, while a beta less than 1 indicates that the stock reacts more moderately to market movements. For the investor who wants to hold quality companies in his or her portfolio, but also doesn't want to see double-digit swings every day, a beta below 1.5 is a useful filter.

A low beta does not guarantee that a stock cannot fall. It just means it has historically reacted less dramatically to market movements. Some…