Anchoring To Where You Got In

The price at which a trader entered a position becomes, almost automatically, the mental yardstick against which every later price is judged — "it's down from where I got in" or "it's finally back to even" are both statements about the entry price, not about the position's actual current merits. The trouble is that the market has absolutely no memory of any individual trader's entry price, and a position's future prospects don't depend on it either. Anchoring to entry price means letting a number that's only meaningful to you personally quietly govern decisions that should really be based only on where things stand now and where they're likely headed.

Why the entry price keeps pulling even when you know it shouldn't

The anchor shows up most clearly in the common urge to "just get back to even" before selling a losing position — a target that has real emotional weight (the trade stops feeling like a loss) but zero connection to whether the position is actually likely to recover to that specific level, or whether holding for it is the best use of capital and attention right now. It shows up on the winning side too, in reluctance to add to a position that's already run up "too far from where I got in," even when the same trader would happily initiate a fresh position at the current price if they didn't already hold one — the entry price of the existing position is silently vetoing a decision that should stand on its own.

A trader who bought a stock at $50 watched it fall to $38 on a real deterioration in the underlying business, updated the thesis, and correctly concluded the fair value was now closer to $35. Asked directly whether they'd buy fresh at $38 given that updated view, the honest answer was no. But the existing position stayed open, with the trader describing the plan as "get back to $50 and get out" — a target chosen entirely because it was the entry price, not because $50 had any remaining connection to the stock's now-lower estimated value. The $50 anchor was governing the exit plan for a thesis that no longer supported it.

The test for whether entry price is distorting a decision is the same one used against the disposition effect: would you take this exact position, at this exact size, at today's price, if you didn't already hold it? If the honest answer is no, the entry price you happen to be anchored to isn't a good reason to keep holding.