Fear of Missing Out (FOMO) in investing is the anxiety that other people are making money on an asset that you are not invested in, leading to impulsive buying — usually near the top of a price move. It is among the most expensive behavioural biases for retail investors.
How FOMO presents:
- Chasing a stock or fund after a 50-100% rally because "everyone is in it".
- Buying small-caps or thematic funds on the strength of recent past returns.
- Allocating to speculative themes (crypto, IPO frenzies, "story stocks") at peak coverage.
- Concentrated bets that violate your asset allocation discipline.
Example: A small-cap fund returned 50% in CY24 and was prominently covered on social media. An investor abandoned her balanced 60/40 plan and put 40% of her portfolio into the fund in early CY25 after seeing peers' returns. The small-cap segment then corrected 25-30% mid-year — her portfolio drawdown was meaningfully worse than her risk profile could tolerate, and she sold in panic, locking in losses.
Why FOMO is dangerous:
- Past returns mean-revert: high recent returns tend to be followed by lower forward returns.
- Position-sizing breaks under FOMO — investors put in amounts they cannot psychologically hold through a 30% drawdown.
- It is often paired with recency bias and herd behaviour.
Counter-measures:
- Write an Investment Policy Statement (IPS) defining asset allocation; review only twice a year.
- Pre-commit using SIPs — automates buying across cycles.
- Use a "24-hour rule" for any new investment idea — no acting on the same day.
- Track rolling-return ranges (not point-to-point); they show the volatility of the asset class and reset expectations.
Related: Recency Bias, Herd Behavior, Loss Aversion, Prospect Theory.
Disclaimer: Educational content from MintByte (ARN-314872, MFD). Examples are illustrative. SEBI Investment Adviser registration is in process; we do not provide personalized portfolio advice.