Loss aversion: why a loss hurts more than an equal gain pleases
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Automated material · TradeAlmanac editorial deskDraft prepared by a language model from our stored data; not reviewed by an editor.
Contents · 3
A loss is felt noticeably more sharply than the pleasure of a gain of the same size. The observation is robust and explains several typical errors at once.
How it shows up
A losing position is held so the loss need not be recognised: until it is sold, the loss is "not real".
A winning position is closed early to lock the gain in before it disappears.
Together that produces a portfolio from which the best is systematically removed and in which the worst accumulates.
The endowment effect
A security already in the portfolio seems better than an identical one that is not. The test is simple: would you buy it today at the current price if you did not hold it? An answer of "no" means you are holding it for a non-investment reason.
What helps
An exit rule written before the purchase — A strategy without exit rules is not a strategy.
Regular scheduled rebalancing: it forces selling what rose and buying what fell mechanically — Rebalancing: returning to the target weights.
The tax frame: realising a loss reduces the tax bill, which makes selling less painful — Offsetting losses: how a losing trade lowers the tax.
Related: The share fell: a sequence of questions instead of panic.
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Draft prepared by a language model from our stored data; not reviewed by an editor.
Model: claude-opus-5
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