Martingale sizing — increasing your bet after a loss to recover it (classically doubling) — is seductive and lethal. Anti-martingale does the reverse: increase size after wins, decrease after losses. For a scalper, anti-martingale isn't a preference; it's the only approach that doesn't eventually end you.
Why martingale kills
Martingale feels logical: after a loss, bet bigger so one win recovers everything. The fatal flaw is that it concentrates your maximum risk at your worst moment — in a drawdown, when your edge may be off. A long enough losing streak (which will happen) demands a bet larger than your account, and one such streak wipes you out. It converts many small wins into the certainty of one catastrophic loss. On leveraged 0DTE options, it's even faster.
Why anti-martingale works
Anti-martingale puts your biggest size on your best periods (pressing winners while you're in sync) and your smallest on your worst (shrinking in drawdowns). This aligns risk with edge: you bet more when the evidence says you're right and less when it says you're wrong. Losing streaks shrink your exposure automatically; winning streaks let you compound. It's how you both survive the bad and capitalize on the good.
Martingale bets the most when you're losing. Anti-martingale bets the most when you're winning. One is a countdown to ruin; the other is how you last.
Applying it as a scalper
In practice: keep a base risk unit (~1%), cut it in a drawdown or after the two-strikes rule, and increase it modestly only after confirmation. Avoid averaging down (a form of martingale within a trade). Never chase a loss with a bigger bet — that instinct is the enemy. NoVo's sizing is anti-martingale by design: it scales to conviction and conditions, never doubling into weakness.