Advanced Alpha Beta Calculator

Measure risk sensitivity and manager skill with confidence. Test returns against benchmarks using clear statistics. Visualize regression, export reports, and interpret results with ease.

Calculator Inputs

Tip: Use monthly returns with 12 periods, weekly returns with 52, or daily returns with about 252.

Example Data Table

Period Asset Return (%) Market Return (%)
11.81.2
22.41.9
3-0.6-0.4
43.12.4
51.20.9
62.01.5
7-1.1-0.8
82.82.1

This sample helps you test the calculator quickly before entering your own series.

Formula Used

Beta measures sensitivity to benchmark moves:

Beta = Covariance(Asset, Market) / Variance(Market)

Jensen Alpha measures risk-adjusted excess performance:

Alpha = Rp − [Rf + Beta × (Rm − Rf)]

Regression Intercept is the fitted constant from the return regression:

Intercept = Average Asset Return − Beta × Average Market Return

Correlation shows the strength of co-movement:

Correlation = Covariance(Asset, Market) / [StdDev(Asset) × StdDev(Market)]

R-Squared estimates how much asset variation the benchmark explains:

R² = Correlation²

In this calculator, risk-free rate is converted into a period rate by dividing the annual rate by the selected periods per year.

How to Use This Calculator

  1. Enter the asset name and benchmark name for clear reporting.
  2. Choose whether your return values are percentages or decimals.
  3. Enter the annual risk-free rate and the number of periods per year.
  4. Paste matched asset returns into the first textarea.
  5. Paste matched benchmark returns into the second textarea.
  6. Ensure both series have the same number of observations.
  7. Click the calculate button to view metrics above the form.
  8. Use the CSV or PDF buttons to export your summary.

FAQs

1. What does beta tell me?

Beta estimates how strongly an asset reacts to benchmark movements. A beta above 1 suggests greater sensitivity, below 1 suggests lower sensitivity, and a negative beta suggests inverse movement.

2. What does alpha mean here?

Alpha is the return left after adjusting for benchmark risk and the risk-free rate. Positive alpha suggests outperformance beyond CAPM expectations, while negative alpha suggests underperformance.

3. Why must both return series have equal lengths?

Each asset return must match the same time period for the benchmark return. Misaligned data breaks covariance, beta, correlation, and alpha calculations.

4. Should I enter daily, weekly, or monthly returns?

Any frequency works if both series use the same periods. Set periods per year correctly so annualized values and period risk-free conversions remain meaningful.

5. What is Jensen alpha?

Jensen alpha compares actual average return against the CAPM expected return. It focuses on skill or unexplained performance after adjusting for systematic market exposure.

6. Why show correlation and R-squared too?

Beta alone shows slope, not fit quality. Correlation and R-squared help you judge how tightly the asset historically tracked the benchmark relationship.

7. Is a higher beta always bad?

Not always. Higher beta means stronger market sensitivity, which can help in rising markets but can also deepen losses during declines. Suitability depends on strategy and risk tolerance.

8. Can I export the results?

Yes. After calculation, use the CSV button for spreadsheet analysis or the PDF button for a portable report you can save or share.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.