In financial markets, giving up on an investment continues to be seen as a sign of failure or weakness, in contrast to persistence, which is associated with character and resilience. However, the article argues that this association is deeply rooted but is not very useful when applied to investment decisions, because insisting is not always a virtue and can simply be a way of postponing the recognition that a decision made in the past no longer makes sense.
The article highlights that maintaining a position simply because it once made sense does not, in itself, constitute a strategy. Companies change, sectors lose momentum, new competitors emerge, or risks appear that were not evident at the time of purchase. The boundary between conviction and stubbornness is rarely clear when a decision is being tested. Daniel Kahneman is mentioned for having helped explain investor behavior through the concept of loss aversion, according to which the pain caused by a loss is considerably greater than the satisfaction provided by an equivalent gain.
One of the most common patterns among less experienced investors is realizing gains too early while losses remain in the portfolio for too long. The resistance to selling is linked to the effect of sunk costs, because the time, money, and effort already invested influence decisions that should depend only on future prospects. The market is indifferent to the purchase price, the hours dedicated to analysis, or the degree of conviction of the investor.
Annie Duke is cited for her book "Quit," in which she argues that the past explains why a decision was made but should not determine the next one. The most consistent investors are not those who never make mistakes, but those who quickly recognize that no analysis is infallible and that no investment thesis remains valid forever. Persistence remains an indispensable quality for anyone who invests, but the difficulty lies in knowing when it continues to be justified and when it serves only as an excuse to postpone an inevitable decision.
