How far your portfolio has drifted from your plan
A plan is a set of targets, and a market moves your holdings away from them without asking. Enter the split you meant to hold and what each part is worth today, and this shows the gap on each one, then what it would take to close it: by trading, and out of your next deposit alone. It runs in your browser. Nothing you type is sent anywhere, and nothing is saved when you leave.
- Largest drift
- 5.00%
- Held today
- $120,000
- Deposit alone
- Reaches target
The furthest any sleeve sits from its target, in percentage points.
$130,000 once the deposit lands.
Every sleeve reaches its target without selling anything.
| Sleeve | Target | Now | Drift | By trading | From the deposit |
|---|---|---|---|---|---|
| Canadian equity | 60.00% | 65.00% | +5.00% | $0 | — |
| US equity | 30.00% | 25.00% | -5.00% | +$9,000 | $9,000 |
| Bonds and cash | 10.00% | 10.00% | 0.00% | +$1,000 | $1,000 |
How it calculates
Each sleeve’s share is its value divided by the total of every sleeve you entered. Drift is that share minus your target, in percentage points, so a sleeve you meant to hold at 60% that now sits at 65% has drifted +5, not +8.3. Percentage points and percentages are different units and mixing them is the most common way this number is reported wrongly.
The two closing columns answer different questions. By trading is the amount that would put each sleeve exactly on target, including the sales that implies, once any deposit is counted. From the deposit spreads new money across the sleeves that are short, largest shortfall first, and never sells anything. When the deposit is bigger than the total shortfall, the remainder goes in at your target weights, which is what leaves you exactly on target rather than merely closer.
Drift here is computed the same way Luum computes it on your real accounts, and that agreement is enforced by a build check rather than asserted: if the two ever diverge the site does not ship. The difference is the input. This page takes sleeve totals you type; the product derives them from your holdings, including looking through your ETFs to what they actually hold, so two funds holding the same companies cannot hide a concentration.
What this deliberately does not do
- It does not tell you to rebalance. It reports a gap. Whether a gap is worth closing turns on tax, trading costs and how far you are from needing the money, and this page knows none of those. A drift of eight points is reported as eight points.
- It does not suggest an allocation. The targets are yours. A tool that proposed a split would be giving advice, which is outside what this product does at all, and it would be doing it without knowing anything about you.
- It ignores tax, commissions and the superficial loss rule. Selling to rebalance in a taxable account realises gains, and the trade amounts here are pre-tax. For what a sale does to your cost base, see the adjusted cost base calculator.
- It has no view on how often to check. Calendar rebalancing and threshold rebalancing are both defended by serious people, and the difference between them is smaller than the difference between having a target and not having one. The couch potato portfolio covers the mechanics.
Educational only, and accurate to what you enter. This is not advice and it is not a recommendation to buy or sell anything. For how Luum tracks the same targets continuously across every account you hold, see setting goals and targets.