In portfolio analysis, what does beta quantify?

In portfolio analysis, what does beta quantify?

• A. Absolute return
• B. Market sensitivity to overall movements
• C. Liquidity
• D. Credit risk

Answer: (B)

Beta is a measure of how much a portfolio's returns tend to move with the overall market. It captures market sensitivity to broad movements, reflecting systematic risk rather than the actual level of return. In practice, beta helps explain why a portfolio might rise or fall in tandem with the market, and it underpins concepts like the CAPM, where the expected extra return of a portfolio is linked to the market risk premium multiplied by beta. A beta greater than 1 indicates the portfolio tends to swing more than the market, while a beta less than 1 means it’s less volatile; a beta around 1 means it moves with the market. This focus on relative movement distinguishes beta from absolute return, which simply measures total gain or loss without considering market context. It also isn’t a measure of liquidity or credit risk, which relate to how easily assets are traded and the risk of default, respectively.

Beta is a measure of how much a portfolio's returns tend to move with the overall market. It captures market sensitivity to broad movements, reflecting systematic risk rather than the actual level of return. In practice, beta helps explain why a portfolio might rise or fall in tandem with the market, and it underpins concepts like the CAPM, where the expected extra return of a portfolio is linked to the market risk premium multiplied by beta. A beta greater than 1 indicates the portfolio tends to swing more than the market, while a beta less than 1 means it’s less volatile; a beta around 1 means it moves with the market. This focus on relative movement distinguishes beta from absolute return, which simply measures total gain or loss without considering market context. It also isn’t a measure of liquidity or credit risk, which relate to how easily assets are traded and the risk of default, respectively.