Case file
Disposition Effect
- Filed under
- Need To Act Fast
The charge
People tend to sell winners too early and hold losers too long.
How it operates
Realizing gains feels good and proves us right, while realizing losses is painful and feels like admitting a mistake.
Logged incidents
- Incident 01
A portfolio manager trims a strong stock too soon but keeps the laggard hoping to get even.
- Incident 02
A founder quickly abandons a promising acquisition channel after one win while clinging to underperforming brand spend.
- Incident 03
A sales leader keeps dead accounts on the books instead of reallocating effort.
What to watch for
Catch it when break-even becomes the target instead of future value. Ask: 'Would I buy or hold this today if I had no history with it?'
Recommended action
Set predefined exit rules and rebalance on a schedule rather than by emotion.
Known associates
- Sunk Cost FallacyWe continue a failing course of action because we have already invested time, money, or effort in it.
- Escalation of CommitmentWe intensify commitment to a bad decision after negative feedback instead of cutting losses.
- Generation EffectWe remember and often value ideas more when we generate them ourselves rather than simply receive them.
- Loss AversionLosses usually hurt more than equivalent gains feel good, so we work harder to avoid losses than to pursue…
- IKEA EffectWe overvalue things we partly built ourselves.
- Unit BiasWe assume the provided unit, package size, or chunk is the right amount to consume, buy, or complete.
Source of record