Beta Calculator (Stock Volatility vs. Market)

Stock Beta Calculator

Calculate the volatility (β) of a stock relative to the overall market. Beta measures systematic risk.

Example: 0.02, 0.015, -0.01, 0.03, -0.005 (for 2%, 1.5%, -1%, etc.)
Must match the number of stock returns entries

Beta (β) Coefficient

Interpretation:

  • β = 1: Stock moves with the market
  • β < 1: Less volatile than market (defensive)
  • β > 1: More volatile than market (aggressive)
  • β < 0: Inverse relationship to market (rare)

Additional Metrics

Alpha (α):
Correlation (R):
R-squared:

About Beta (β)

Beta measures a stock’s sensitivity to market movements. It’s calculated using regression analysis of the stock’s returns against market returns.

Formula: β = Covariance(Stock Returns, Market Returns) / Variance(Market Returns)

Alpha (α) measures performance relative to the market after accounting for risk (β). Positive alpha indicates outperformance.