Archive / Investment Adviser (Level 2) / Basics of Insurance

nism-series-xb-anchoring-availability-heuristic-behavioral-finance[ INVESTMENT ADVISER (LEVEL 2) ]

What is 'Anchoring Bias' in equity stock investing?

[ A ]Investing money strictly in shipping anchor manufacturing companies.

[ B ]Fixating on an arbitrary historical reference price (such as the all-time high price of ₹2,000 or the purchase price of ₹1,500) and refusing to sell a fundamentally broken stock until it returns to that anchor price, ignoring deteriorating corporate fundamentals.[ CORRECT ]

[ C ]Rebalancing asset allocation corridors once a year.

[ D ]Calculating the Sharpe Ratio of an equity mutual fund.

Takeaway

Option B is correct: Fixating on an arbitrary historical reference price (such as the all-time high price of ₹2,000 or the purchase price of ₹1,500) and refusing to sell a fundamentally broken stock until it returns to that anchor price, ignoring deteriorating corporate fundamentals.

Derivation

Anchoring bias occurs when an investor's decision-making gets tethered to an initial reference number — commonly their own purchase price or a stock's past all-time high — and that number keeps dominating judgment long after it stops being economically relevant. A holder anchored to a ₹2,000 all-time high may refuse to sell even as earnings deteriorate and fair value drops well below that figure, simply because ₹2,000 feels like the 'true' price it should return to. This is dangerous because the anchor has no connection to current fundamentals; the market does not know or care what an investor originally paid, and waiting for an arbitrary historical level can mean holding a permanently impaired position indefinitely.

Why the others fail

A — Investing money strictly in shipping anchor manufacturing companies.

Anchoring bias is a cognitive distortion in decision-making, unrelated to investing in companies that manufacture physical anchors or shipping equipment.

C — Rebalancing asset allocation corridors once a year.

Rebalancing a portfolio to a predetermined allocation corridor on a fixed schedule is disciplined, rules-based portfolio management, not anchoring bias.

D — Calculating the Sharpe Ratio of an equity mutual fund.

Computing an objective risk-adjusted metric like the Sharpe Ratio is neutral mathematical analysis, not a cognitive bias tethering judgment to an irrelevant price.