Witan Way

Portfolio Rebalancing

How far has my portfolio drifted?

Name your sleeves, enter what each holds and what you meant each to hold. The tool reports the gap and the moves that close it. It never decides the target for you.

Your portfolio

Sleeve 1
Sleeve 2
Target total100%
How to rebalance

New money only never sells. It can fill a gap; it cannot remove an overweight.

Largest drift from target

10.0 pp

Across 2 sleeves, before any move.

Portfolio value

€100,000

Value after the move

€100,000

Total to buy

€10,000

Total to sell

€10,000

Largest drift remaining

0.0 pp

Sleeve by sleeve

SleeveNowWeightTargetDriftActionAfter
Equities€80,00080.0%70.0%+10.0 ppSell €10,000€70,000
Bonds€20,00020.0%30.0%-10.0 ppBuy €10,000€30,000
Method, sources and limits
Method version
1.0.0
  • Targets are computed on the final portfolio, new money included. In new-money-only mode the contribution is shared across the sleeves below target in proportion to how far below they are, and nothing is ever sold. Taxes, trading fees, spreads and account restrictions are outside this tool.

Past performance is not a guide to future returns. These figures describe what happened over the period shown and nothing else.

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Questions about this tool

Why does new money sometimes leave drift behind?
Because an overweight sleeve can only come down by being sold or by everything else growing around it. If the contribution is smaller than the gap, some drift survives — and the tool says so rather than reporting a balanced portfolio.
Does Witan decide my target allocation?
No. You enter the targets. Nothing here calls an allocation optimal, recommended or suitable — the tool only measures the distance between where you are and where you said you wanted to be.
What about tax and trading costs?
They are outside this tool and they matter. A full rebalance can realise gains; new-money-only exists partly because it does not. Check both against your own situation before acting.

Witan Way is an independent, rules-based investing education platform. Nothing published constitutes personalised investment advice, a solicitation, or a recommendation to buy or sell. Capital is at risk. © Witan Way.