Britannica AI Icon

Quick Summary

Beta is a financial metric that measures a stock or fund's volatility in relation to a broader market benchmark, typically the S&P 500. It quantifies market risk, also known as volatility, which represents uncertainty for investors.12

Interpreting Beta Values:

  • Beta of 1.0: The asset's movement is in sync with the market benchmark.12
  • Beta > 1.0: The asset is more volatile than the market. For example, a beta of 1.5 suggests a 1.5% move for every 1% move in the benchmark.12
  • Beta < 1.0: The asset is less volatile than the market. A beta of 0.75 indicates a 0.75% move for every 1% move in the benchmark.12
  • Negative Beta: The asset moves inversely to the market.12

Beta is a key component of the Capital Asset Pricing Model (CAPM) and can be used to forecast returns, manage portfolios during market trends, and aid in diversification. However, beta is backward-looking and can change over time, so it's best considered alongside other metrics.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.