Portfolio Drift

Free Portfolio Drift calculator with clear step-by-step results.

About Portfolio Drift

Markets push actual allocations away from targets, which rebalancing corrects.

Formula

Drift = actual − target allocation

Worked example

With the default values below, Portfolio Drift returns Allocation Drift of 12.0%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Target stock allocationaccepts 0–100: 60
Current stock allocationaccepts 0–100: 72
Portfolio valueminimum 0 $: 100,000 $

Results

Allocation Drift: 12.0%
Amount to Rebalance: $12,000.00
Over / Under Allocated: Over-allocated to stocks

Step by step

1Values used
2Formula
3Allocation Drift= 12.0
4Amount to Rebalance= $12,000
5Over / Under Allocated= Over-allocated to stocks

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How does this calculator work?