Loss Aversion
The psychological reality that losses hurt roughly twice as much as equivalent gains feel good — distorting risk decisions across the board.
Loss aversion is one of the most thoroughly documented findings in behavioural economics. Losing $500 is approximately twice as painful as winning $500 is pleasurable. This asymmetry is baked into human wiring — it made sense on the savannah; it is a liability in markets.
It causes traders to hold losing trades too long (refusing to realise the loss and make it "real") while cutting winning trades too early (locking in the good feeling before it disappears). The result: small gains and large losses — the exact opposite of what a positive-expectancy strategy requires.
Awareness alone is not enough. You need mechanical rules: stops that exit automatically, profit targets that trigger partial sells. Remove the real-time emotional decision from the equation wherever possible.
Related Terms
Anchoring Bias
Fixating on an arbitrary reference price — like your entry or an old high — and letting it distort your current trading decisions.
IntermediateBag Holder
Someone stuck holding a position that has collapsed in value, usually because they didn't cut the loss when the thesis broke.
BeginnerConviction
Confidence in a trade idea grounded in evidence and process — distinct from stubbornness, which is confidence without that grounding.
IntermediateDiamond Hands
Slang for holding a position through severe volatility and drawdowns with conviction — the opposite of paper hands, for better or worse.
BeginnerDrawdown Tolerance
Your genuine psychological capacity to endure account drawdowns without deviating from your strategy — different from what you think you can handle.
IntermediateFear
The emotional response to risk that causes premature exits on winning trades or paralysis when a valid setup appears.
BeginnerGreed
The emotional drive to squeeze every last tick out of a trade, often turning winners into losers by refusing to take profit.
BeginnerPaper Hands
Slang for a trader who sells at the first sign of trouble — exiting on minor weakness or fear rather than holding to the original thesis.
BeginnerProbabilistic Thinking
Thinking in distributions and expected value rather than in certainties — accepting that any single trade can lose while the strategy still wins overall.
IntermediateSunk Cost Fallacy
Holding a losing trade because of how much you've already lost in it — as if the market cares what you paid.
Beginner