The Most Common Investor Biases
FOMO (Fear of Missing Out): The urge to chase rapidly rising assets late in the rally. Investors who bought crypto near the 2021 peak experienced this firsthand.
Loss Aversion: Research by Kahneman and Tversky shows losses feel 2–2.5× more painful than equivalent gains feel good. This causes investors to hold losing positions too long and sell winners too early.
Herd Behavior: Buying what everyone is buying, selling what everyone is selling. The primary mechanism behind bubbles and panics.
Confirmation Bias: Only reading news and analysis that supports your existing thesis. Filtering out counter-arguments leads to staying in wrong positions too long.
How to Reduce Emotional Decision-Making
Create a written investment plan: Define buy and sell criteria in advance. "I will reduce position if P/E exceeds 30" leaves no room for in-the-moment emotional overrides.
Reduce portfolio-checking frequency: Constantly monitoring prices activates loss aversion and triggers unnecessary trades. For long-term investors, weekly or monthly reviews are sufficient.
Keep an investment journal: Record the reasoning behind every trade. Over time you will recognize patterns in your own biases.