CAPM Formula:
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The Capital Asset Pricing Model (CAPM) calculates the required return on an investment based on its systematic risk (beta), the risk-free rate, and the expected market return. It helps investors determine the appropriate return they should expect for the level of risk taken.
The calculator uses the CAPM formula:
Where:
Explanation: The formula calculates the minimum return an investor should accept given the investment's risk profile compared to a risk-free asset.
Details: Calculating required return is essential for investment decision-making, portfolio management, capital budgeting, and security valuation. It helps determine if an investment offers adequate compensation for its risk level.
Tips: Enter risk-free rate as a percentage (e.g., 2.5 for 2.5%), beta coefficient (typically between 0.5-2.0), and expected market return as a percentage. All values must be non-negative.
Q1: What is considered a good risk-free rate?
A: Typically, government bond yields (like 10-year Treasury notes) are used as risk-free rates. The specific rate depends on current market conditions and the investment time horizon.
Q2: How is beta coefficient determined?
A: Beta is calculated by regressing the security's returns against market returns. A beta of 1 indicates the security moves with the market, while betas above/below 1 indicate higher/lower volatility.
Q3: What market return should I use?
A: Use historical average market returns (typically 7-10% for broad market indices) or forward-looking estimates based on current market conditions and economic forecasts.
Q4: Are there limitations to CAPM?
A: Yes, CAPM assumes efficient markets, rational investors, and that beta fully captures risk. It may not account for other risk factors like size, value, or momentum.
Q5: How is required return used in practice?
A: It's used as a discount rate in valuation models, for performance evaluation, in capital budgeting decisions, and to determine appropriate asset allocation in portfolios.