Ask a struggling 0DTE trader about their strategy and they'll describe entries. Ask about position sizing and you'll usually get a blank look. That's backwards — sizing is what keeps you in the game long enough for an edge to matter.
Assume zero
The core rule of 0DTE sizing: assume any single trade can go to zero, because it genuinely can within hours. Size every position so that outcome is survivable and unremarkable. If one bad 0DTE trade meaningfully dents your account, the position was too big — full stop.
Fixed-fractional risk
Risk a small, fixed fraction of your account per trade — the same percentage every time, so no single loss or short losing streak can end you (risk of ruin). This removes the emotional sizing that wrecks accounts: no doubling up to "make it back," no going huge on a "sure thing." Consistency of risk is the edge (position sizing basics).
You don't blow up a 0DTE account with a bad trade. You blow it up with a bad trade that was three times too big.
Let conviction scale size, not emotion
Sizing can vary with genuine conviction — a higher-quality setup can justify a larger (but still bounded) position — as long as the framework is defined in advance, not decided in the heat of a move. NoVo does exactly this: your allocation is fixed, and conviction tiers scale contract count within it, mechanically. See 0DTE risk management and 0DTE vs 1DTE.
Ready to put it to work?
NoVo reads the full tape and maps every dealer level live — the market intelligence no human can track by hand — then draws it on your chart as it moves, and tells you what it has seen this setup do before.
Trader · $209/mo
The cockpit.
Every dealer level living on a real charting terminal — 1-minute to weekly, fifteen years deep, your own drawings on the map, SPY/QQQ/IWM one click apart — with the hourly audit, ‘The Line’ playbooks, the three books side by side and NoVo’s written read where you trade. Analyst included.
The same dealer map drawn on crypto — gamma by strike on every book with real open interest, funding per venue, open interest, 24-hour liquidation flow and true cost to trade — plus the on-chain liquidity map across Solana, Base and Robinhood Chain. NoVo reads it too.
The live dealer map — dealer positioning, options flow, and in-house sweeps & block prints — plus a written market read every session, to your inbox, the dashboard, and the private Analyst Discord. Structure, levels, and the order-flow footprint.
NoVo is a software tool for market analysis, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.
The member portal — delayed dealer levels with the gamma flip and the expected-move band on SPY, QQQ and IWM, plus sectors, movers and the week’s catalysts. NoVo’s Mid-Day Tape Review every trading day and the Week Ahead on Sundays. And the NoVo Discord: live discussion and NoVo’s daily dealer-map read.