Margaret, 61, paid A$50,000 for shares in a mining company that are now worth A$30,000. She agrees with her adviser that the holding no longer fits her retirement goals, but says she will sell 'once it gets back to what I paid'. Her refusal to sell is an example of…
Loss aversion is feeling losses more strongly than equal gains; its trading form, the disposition effect, is holding losers too long and selling winners too early (Kahneman 2012; Pompian 2012, on ASIC's Exam preparation guidance v6.0 reading list). Margaret accepts the shares no longer fit her goals yet will not realise the A$20,000 loss, which is that pattern. Nothing in the scenario says she rates her own stock picking highly, so overconfidence does not fit. She is not copying other investors, so it is not herding. Nothing suggests news coverage is driving her, so the availability heuristic does not fit either. The adviser can help by reframing the decision around her goals rather than the price she paid.
Her purchase price also acts as an anchor, but refusing to realise a loss is loss aversion.
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