Most retail options trader losses do not come from being wrong on direction. They come from being right on direction and wrong on size. The math of position sizing is not glamorous but it is the single highest-impact lever in trader survival.

The first question

Before any trade: what is the maximum dollar loss if this position goes to zero? For long options, this is the premium paid. For short options or spreads, it is the spread width minus the credit, multiplied by contracts. For naked short positions, it is functionally unlimited.

The 1-2% rule, applied honestly

If max loss on a trade is greater than 2% of account equity, the position is too big. This is true even when the trade looks like a lock. Especially when it looks like a lock. The Kelly criterion math suggests fractional sizing precisely because losing streaks are inevitable and recoverability matters more than maximum upside on any single position.

Why retail oversizes

Cheap options look small. A $200 lottery ticket on a $10k account is 2% - sized correctly. Five $200 lottery tickets is 10% - sized wrong.
Conviction breeds size. The trades that feel certain are the ones traders oversize. They are also the ones most likely to be informed wrong.
Wins encourage compounding. A run of three winners makes the fourth trade twice as large. Statistical regression to the mean punishes this pattern.

The math of recovery

Lose 50% of an account, you need to double the remainder to break even. Lose 75%, you need a 4x. The convexity of drawdown recovery is brutal - and it is why every experienced trader sizes for survival first, not return.

The honest framework

Set max risk per trade as a fixed percentage. Risk 1% on most trades, up to 2% on highest-conviction setups. Never risk more than 5% of account on any open position regardless of conviction. Cap total options exposure at 20% of account in a normal regime, lower in elevated vol. The traders who survive run this kind of math automatically. The ones who blow up did not.