Why is an unrealised gain harder to hold than a loss?

Why this matters. Most people expect gains to be the easy half. They produce their own pressure, and it is a different pressure with a different failure.

A position is up. Nothing has been banked. And the discomfort is real: an unrealised gain feels like something you could lose, which is a very different sensation from something you have already lost.

The asymmetry is documented — and it is not ours

Replicated, and owned elsewhere: investors sell winners at a higher rate than losers — the disposition effect, named by Shefrin and Statman (1985) and measured across brokerage records by Odean (1998). Portfolio Management teaches the finding and its evidence in Loss aversion and the disposition effect.

We are not re-teaching that. Our subject is the minute that produces the record: what it feels like to sit in front of a gain you have not taken.

What the minute actually contains

The reference point has moved again — silently. It is no longer your entry. It is the highest number you have seen since. Every tick below that is now experienced as a loss, even while the position is profitable. That is why a position up 12%, having been up 15%, feels bad.

Nobody decides to move the reference point. It moves on its own, and it moves faster in the direction of the peak than away from it.

What you can control

Not the feeling. The frequency of the observation. Replicated: how often people see results changes how much risk they take — Thaler, Tversky, Kahneman and Schwartz (1997) showed that more frequent feedback produced more conservative choices, the myopic-loss-aversion result. Checking a position every four minutes is not neutral monitoring; it is an intervention on your own decision.

The artefact

A review cadence, written down: how often you will look, and what you will do when you do. "Whenever I think of it" is a cadence too — an unmanaged one that loads its checks precisely when the position is loudest.

Alongside it, the exit condition as written at entry, so the question at each check is has the condition been met? rather than how do I feel about this number?

Try it now

Estimate how many times you looked at your most recent position on its busiest day. Then write the cadence you would defend in advance. The gap is the lesson.