behaviour

Don't marry a stock

The rule

We fall in love with what we own and defend it long after we would ever buy it fresh. Ask: would I buy this today at this price?

Where it flips

Trading in and out all the time is the opposite fault; not every holding needs a fresh defence each day. Where it misleads: you fidget too much. The fix: ask now and then, honestly, "would I buy it fresh today?" and sell only for a reason about the business, not a feeling about the past.

Owning a thing makes us value it more, and makes us want to leave things as they are. So we cling to a holding out of loyalty, pride, or the price we once paid, instead of judging it coldly. The cure is one honest question: knowing what I know now, would I buy this today at this price?

A worked example

An investor holds a rotting company for years "because I've owned it since ₹500." He refuses to sell even as the business falls apart. Loyalty made that choice, not clear thinking. [illustrative]

How to spot it

  • ·holding just because of the price you once paid
  • ·loyalty or pride in a position
  • ·never asking "would I buy this today?"

Behavioural finance research · Behavioural finance research

Our plain-English take on Behavioural finance research’s idea, in our own words - not the book. The author is not SEBI-registered; nothing here is investment advice.