Portfolio Return Calculator
Calculate weighted portfolio return from multiple holdings, allocation weights, and individual investment returns.
Last Updated: May 2026Portfolio Return Formula
Example Weighted Portfolio Return Calculation
Suppose 50% of a portfolio returns 8%, 30% returns 4%, and 20% returns 2%. The weighted portfolio return is 5.6%.
This shows why a large holding can drive portfolio performance more than a smaller holding with a high or low return.
- Enter starting portfolio value.
- Enter each holding weight.
- Enter each holding return.
- Review weighted return, ending value, gain or loss, and total allocation weight.
Weighted Portfolio Return Comparison
A holding with a larger allocation has more influence on portfolio return. These examples show how weights affect the final result.
| Holding A | Holding B | Holding C | Weighted Return |
|---|---|---|---|
| 50% at 8% | 30% at 4% | 20% at 2% | 5.60% |
| 70% at 8% | 20% at 4% | 10% at 2% | 6.60% |
| 30% at 8% | 50% at 4% | 20% at 2% | 4.80% |
How to Interpret the Result
Weighted return is useful when each holding has a known allocation and return.
If weights do not add to 100%, the result may describe only part of a portfolio or an incomplete allocation.
What This Calculator Does Not Include
This calculator does not calculate time-weighted return, money-weighted return, deposits, withdrawals, rebalancing, taxes, or fees.
It is a simplified snapshot return calculator.
How to Use This Calculator
Calculate weighted portfolio return from multiple holdings, allocation weights, and individual investment returns.
- Enter realistic values from your own notes or a sample stock scenario.
- Compare the result with the formula section so the calculation is easy to audit.
- Use the result as an educational reference, not as a buy, sell, or hold signal.
Important Limits
Portfolio Return Calculator does not predict market direction, future returns, liquidity, taxes, slippage, or personal suitability. Real results can differ because prices, fees, tax rules, and order execution may change.
Learn the Concepts Behind the Numbers
After using this calculator, use the learning checks to review whether the underlying stock terms, risk ideas, and market basics are clear.
Educational Review
Last updated: May 2026. StockCalcLab tools are built for financial education and calculation practice only. They do not provide personalized financial, tax, legal, or investment advice.
Portfolio Return FAQ
What is weighted portfolio return?
Weighted return combines each holding's return based on its allocation size in the portfolio.
Do allocation weights need to equal 100%?
For a complete portfolio example, weights should add up to 100%.
Does this include fees and taxes?
Only if the holding returns entered already include those effects.
Why do portfolio weights matter?
Larger holdings have more influence on weighted portfolio return than smaller holdings, even when their individual return is similar.
Can I enter negative returns?
Yes. Negative holding returns can be entered to model losses in one or more parts of the portfolio.
Does this calculate time-weighted return?
No. It is a simplified weighted return calculator, not a full time-weighted or money-weighted performance system.
Disclaimer: This calculator is for educational portfolio return examples only and does not provide investment advice.