CAPM Calculator: Calculate Expected Stock Returns in Real Time

CAPM Calculation Inputs

Risk-Free Rate (%)

Typically the 10-year government bond yield (e.g., 2.5%)

Beta (β)

Stock volatility relative to market (1.0 = market average)

Expected Market Return (%)

Long-term average return of the market (e.g., 8%)

Current Stock Price ($)

Optional: For calculating expected future price

Risk Level Indicator

Low Risk Moderate Risk High Risk

CAPM Calculation Results

Expected Return (E(Ri))

9.10%

Using CAPM formula: E(Ri) = Rf + β(E(Rm) - Rf)

Risk Premium

6.60%

Market return minus risk-free rate

Expected Future Price (1 Year)

$163.65

Based on current price and expected return

Alpha (α) Potential

1.10%

Excess return over required return

Interpretation

Based on your inputs, the expected return for this investment is 9.10%. This is 1.10% above the market's expected return adjusted for risk. With a beta of 1.2, this stock is moderately volatile compared to the market.

Tool Features

Real-Time Calculation

Results update instantly as you adjust inputs

Interactive Sliders

Fine-tune inputs with intuitive sliders

Risk Visualization

Visual risk meter shows investment risk level

Calculation History

Save and review previous calculations

Multiple Metrics

Calculates return, premium, alpha, and future price

Export Results

Download calculations as a PDF report

Fully Responsive

Works perfectly on all device sizes

Share Results

Share your calculations with colleagues

Educational Insights

Learn about CAPM with detailed explanations

Input Validation

Smart validation ensures accurate inputs

Calculation History

9.10% Return Just now

Rf: 2.5%, β: 1.2, Rm: 8%

Understanding the Capital Asset Pricing Model (CAPM)

What is CAPM?

The Capital Asset Pricing Model (CAPM) is a financial model that calculates the expected return on an investment based on its risk relative to the overall market. Developed in the 1960s, it's widely used in finance to determine appropriate expected returns for assets given their risk levels.

The CAPM Formula

The CAPM formula is expressed as:

                E(Ri) = Rf + βi[E(Rm) - Rf]
            

Where:

E(R_i) = Expected return on investment
R_f = Risk-free rate (usually government bond yield)
β_i = Beta coefficient (measure of stock volatility relative to market)
E(R_m) = Expected market return
[E(R_m) - R_f] = Market risk premium

How to Use This CAPM Calculator

Enter the Risk-Free Rate: This is typically the yield on 10-year government bonds. For US-based calculations, you might use the current 10-year Treasury yield.
Input the Beta Coefficient: Beta measures a stock's volatility relative to the market. A beta of 1 means the stock moves with the market. Less than 1 means less volatile, greater than 1 means more volatile.
Provide Expected Market Return: This is the long-term average return expected from the market. Historically, the S&P 500 has returned about 8-10% annually.
Add Current Stock Price (Optional): If you enter the current stock price, the calculator will also show the expected future price in one year.
Review Results: The calculator will instantly show you the expected return, risk premium, alpha, and risk level.

Practical Applications of CAPM

Investors and financial analysts use CAPM for several purposes:

Portfolio Management: Determining if a stock is properly valued relative to its risk
Capital Budgeting: Calculating hurdle rates for investment projects
Performance Evaluation: Assessing whether a portfolio manager is generating adequate returns for the risk taken
Security Valuation: Estimating required rates of return for valuing stocks

Limitations of CAPM

While CAPM is widely used, it has limitations:

Assumes all investors have the same expectations and time horizon
Relies on historical data for beta calculation, which may not predict future volatility
Assumes markets are perfectly efficient
Doesn't account for taxes or transaction costs

Pro Tip

Use this CAPM calculator as a starting point for investment analysis. Always consider multiple valuation methods and consult with a financial advisor before making investment decisions.