Loss Aversion in Portfolio Management

Loss aversion is the psychological principle that the pain of losing is psychologically about twice as powerful as the joy of gaining. In portfolio management, this leads to irrational behavior where investors hold onto losing positions for too long, hoping to avoid the pain of realizing a loss.

They may also sell winning positions too early to lock in a small gain, effectively cutting their winners short and letting their losers run. This is the opposite of sound trading strategy.

In the context of derivatives, where positions can be liquidated, loss aversion can lead to desperate attempts to "double down" on losing trades to recover losses, often resulting in total capital depletion. Overcoming this requires the systematic use of stop-losses and a detached approach to P&L.