The investor as a source of portfolio risk.
| Concept | Explanation | |---|---| | FOMO | Urgency to buy because others appear to be profiting. | | Panic selling | Urgent exit driven by fear rather than thesis review. | | Loss aversion | Losses feel more severe than equivalent gains. | | Risk seeking after losses | Taking excessive exposure to recover quickly. | | Emotional sizing | Increasing position size because conviction or frustration is high. |