Weight stock betas to find the beta of a portfolio.
Please do not make financial decisions based on these results.
What is the Portfolio Beta Calculator?
Weight stock betas to find the beta of a portfolio. To use the Portfolio Beta Calculator, enter holding 1 value, holding 1 beta, holding 2 value, holding 2 beta, holding 3 value, holding 3 beta; it returns portfolio beta, portfolio value, and shows them instantly as you type.
Where the Portfolio Beta Calculator fits
Weight stock betas to find the beta of a portfolio. The main figure it returns is the Portfolio beta, worked out from the values you enter.
It belongs with the other stocks & equity analysis tools. If you are comparing options or checking a result from another angle, try the Beta Stock Calculator, Unlevered Beta Calculator or the Beta Relever Calculator.
How to use the Portfolio Beta Calculator
- Enter your numbers. The inputs are Holding 1 value ($), Holding 1 beta, Holding 2 value ($), Holding 2 beta, Holding 3 value ($), Holding 3 beta. Take price and share figures from the latest filing or quote. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Portfolio beta, and the cards below show Portfolio value. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Portfolio Beta Calculator using the default values shown in the calculator above:
Inputs
| Holding 1 value ($) | 40,000 |
|---|---|
| Holding 1 beta | 1.2 |
| Holding 2 value ($) | 30,000 |
| Holding 2 beta | 0.8 |
| Holding 3 value ($) | 30,000 |
| Holding 3 beta | 1.5 |
Results
| Portfolio beta | 1.17 |
|---|---|
| Portfolio value | $100,000.00 |
With these inputs the calculator returns Portfolio beta: 1.17. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Holding 1 value ($) from 40,000 to 48,000 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Portfolio beta | 1.17 | 1.17 | +0.2% |
| Portfolio value | $100,000.00 | $108,000.00 | +8% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the Portfolio Beta Calculator reports Portfolio beta and portfolio value. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
Why compute portfolio beta?
It shows how sensitive the whole portfolio is to market moves.
Which valuation ratio should I trust?
No single ratio is enough. Compare several multiples with the company’s own history and its industry peers.
Is a high dividend yield good?
Not automatically. A very high yield can signal a falling price or a dividend that may be cut.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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