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Portfolio Rebalance Calculator

Enter current holdings and target weights to compute suggested buys/sells. Supports buy-only rebalancing with contributions.

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How to use

  1. Enter asset name, current amount, and target weight (%).
  2. Set additional cash (contribution/withdrawal) and trading constraint.
  3. Review before/after allocation, trade list, drift, and charts.

Inputs

Asset Current amount Target weight (%) Action
Trading constraint
Load a sample
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Result

Before / After allocation

Asset Before amount Before weight Target weight Target amount Trade After amount After weight Drift before Drift after

Trades

Asset Action Amount After amount After weight

Allocation charts

FAQ

Must target weights sum to 100%?

Yes. The calculator validates that target weights are effectively 100%.

What happens in buy-only mode with no contribution?

No trades are executed and a warning is shown.

Can additional cash be negative?

Yes (withdrawal), but some constraints may make the problem infeasible.

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