Investing term
What is Loss aversion?
Feeling losses about twice as strongly as equivalent gains — leading you to hold losers far too long.
Loss aversion is the well-documented quirk that losses feel about twice as painful as equivalent gains feel good. Losing $1,000 stings roughly as much as winning $2,000 pleases — an asymmetry baked deep into human psychology and confirmed across decades of experiments.
That lopsided feeling drives predictably bad decisions. It makes people cling to losing investments to avoid 'locking in' a loss, sell winners too early to bank a sure gain, or dump everything in a panic just to stop the pain. Recognising that the emotion is exaggerated — that the fear is bigger than the fact — helps you act on the numbers rather than the sting.
Losing $1,000 stings about twice as much as gaining $1,000 pleases. That lopsided feeling is why investors hold losers too long and sell winners too soon.
For example
Losing $1,000 hurts roughly twice as much as gaining $1,000 feels good — which is why people hold sinking stocks far too long to dodge the pain.
Learn it by doing
That's Loss aversion in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 2, Why Investing Matters (And When It Doesn't)).
Try the free lesson →Why it matters to you
Loss aversion is the root of many of investing's most expensive mistakes: holding losers, panic-selling, and avoiding sensible risk. Because the pain of a paper loss feels so acute, investors take actions to relieve it that quietly damage their long-run returns. Simply naming the bias in the moment — 'this feels twice as bad as it should' — creates enough distance to make a calmer choice.
⚠ Holding losers to avoid the pain
The classic trap is refusing to sell a losing investment because selling makes the loss 'real'. But the loss already happened — the price is what it is whether you sell or not. Clinging on to avoid the feeling often means riding a bad holding all the way down. Judge the position on its future prospects, not on your purchase price.