Final answer:
Beta captures the systematic risk of a stock or portfolio, indicating how sensitive it is to market movements. HomeStore, Inc.'s beta of 1.5 suggests it is more volatile than the overall market.
Step-by-step explanation:
The beta is a measure that captures the systematic risk of a stock or portfolio in comparison to the overall market. Systematic risk, also known as market risk, is the risk inherent to the entire market or market segment. This type of risk cannot be diversified away and is often influenced by factors such as economic changes, political events, or natural disasters which affect the performance of all securities in the market. John, working as an analyst at Star Investments, Inc., finds that HomeStore, Inc. has a beta of 1.5, which means it is more volatile than the market and is expected to be 50% more receptive to market movements. In contrast, unsystematic risk, also known as specific or idiosyncratic risk, is unique to a particular company or industry and can be minimized through diversification.