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Chapter 4Behavioural finance — why investors do what they do

The investor-return gap

In this chapter: DALBAR-style studies in Indian context · Closing the gap — process and rules

~3 min readLayer 3 · Industry Domain MasteryFree
Foundation

The investor-return gap: actual investor returns are 2-4% per year lower than the funds they invested in. Cause: behaviour. Investors put money in after gains (chasing performance) and take it out during losses (panic-selling). The fund's reported return assumes a buy-and-hold investor; real investors don't buy-and-hold.

Deep Dive

DALBAR-style research consistently shows this gap globally. In India, Value Research and Morningstar studies show similar 2-4% annual gap. On a ₹10K monthly SIP for 30 years at 12% gross fund return, gap of 3% means ending value of ₹3.5 crore (if held perfectly) vs ₹2.0 crore (typical investor experience) — a 40% gap purely from behaviour. Closing the gap: (1) Automate (SIPs, auto-invest, rule-based rebalancing), (2) Pre-commit (IPS, written rules), (3) Disengage from short-term news (check portfolio quarterly, not daily), (4) Coach through volatility (advisor's value).

Advanced

Practitioner insight: the gap closes with mechanical rebalancing, not market timing. Annual rebalancing back to target allocation systematically sells appreciated assets and buys depreciated ones — the mechanical version of "buy low, sell high". Studies show 50-100 bps annual outperformance just from this. For self-directed investors: lock the rebalancing into a calendar event (e.g., 1st April every year). For advised: include in IPS as mandatory. Most clients resist rebalancing because it forces selling winners (loss aversion in reverse) and buying losers (recency bias).

Educational purposes only. The numbers, returns, and examples used in this lesson are illustrative. Past performance does not guarantee future results. Mutual fund and securities investments are subject to market risks. This lesson is not investment advice; for advice tailored to your circumstances, consult a SEBI-registered Investment Adviser. Read our full disclaimer.