The gambler's fallacy is the belief that a streak of one outcome makes the opposite "due" — as if independent events keep score and self-correct. A coin that lands heads five times is not more likely to land tails next. Markets punish this intuition constantly.

"It's due for a bounce"

After a stock falls several days, it feels overdue to reverse, tempting you to buy the falling knife (the danger of averaging down). But a downtrend is not a coin toss self-correcting — it can persist far longer than feels reasonable, especially when dealer positioning amplifies the move (negative gamma amplifies trends). "Due" is a feeling, not an edge.

The flip side: the hot hand

The mirror error is assuming a streak continues because it's "hot" — piling into a parabolic move because it keeps going (overconfidence). Both errors share the root mistake: reading meaning into a sequence of largely independent outcomes (recency bias).

The market doesn't owe you a reversal for good behavior. "It's due" is the most expensive two-word thesis in trading.

Trading it right

Base entries on structure and confirmation, not on a move feeling "stretched" or "due" — a trend is innocent until a level breaks and confirms (breakout vs fakeout, reversal vs continuation). A rules-based system never thinks a level is "due" — it acts only on defined conditions, never on a gambler's hunch (mechanical vs discretionary).