Behavioral risk

Behavioral risk is the gap between what an investor says they will do and what they actually do when markets move. It is the third risk dimension, distinct from tolerance and capacity, and the one a questionnaire cannot capture.

Stated versus revealed

A questionnaire captures an intention. A market decline captures conduct. The relationship between the two is weaker than the industry’s tooling assumes.

Nobody rehearses a drawdown. The first real one is the measurement, and by then it has already cost something.

Why it is the one a questionnaire cannot see

A strategy that is abandoned partway through has not delivered whatever it was designed to deliver. The realized outcome belongs to the investor’s actual holding period, not to the strategy’s.

What is observable

Past conduct is the most useful available evidence — what someone did in previous declines, whether they have changed strategy after volatility before, how they responded to a large unexpected expense. History is imperfect but it is revealed rather than stated.

What it is not

It is not a prediction. Nothing about behavioral analysis forecasts what a specific person will do on a specific day, and any tool that claims otherwise is overreaching.

It is an input to a conversation and a suitability file. The judgment stays with the advisor.

Tolerance is what they say. Capacity is what the arithmetic allows. Behavior is what happens. Only the third one is what actually happened.

Named and set out in full at The Three Risks.