Decide your risk before you click. Enter your account, the % you'll risk, your entry premium and your stop — get the max contracts that keeps a stop-out to exactly the risk you chose.
The stop is where you'd bail on the option — e.g. 30% means you cut it if it loses 30% of the premium.
For education only — not financial advice. Position sizing manages risk; it does not remove it. Options involve significant risk of loss.
Sizing is half the battle — honoring the stop is the other half. NoVo manages your exits automatically, so the stop you set is the stop that fires, not a number you talk yourself out of.
See how NoVo works →Position sizing is the difference between a bad trade and a blown account. The rule most disciplined traders live by: risk a fixed small percentage of your account per trade — often 1–2% — so no single loss can hurt you, and a losing streak can't wipe you out. This calculator turns that rule into a contract count.
Dollar risk = account × risk%. Loss per contract at your stop = entry premium × stop% × 100 (each contract is 100 shares). Max contracts = dollar risk ÷ loss per contract, rounded down. Size to that number and a stop-out costs you exactly the percentage you chose — no more.
0DTE options move fast and can go to zero, so oversizing is the fastest way to ruin. Fixing your risk before you click removes the emotion — you already know the worst case. That discipline is the whole point of a mechanical system: NoVo manages your exits automatically so the stop actually gets honored instead of turning into a hope-and-hold. More in the 0DTE Guide.
Market data on this page is delayed and provided for general information only — it is not financial advice or a recommendation to trade. VIX/VXN/RVX are ~15-minute delayed (CBOE); index values use E-mini futures. Options trading involves significant risk of loss. © 2026 NoVo Options Trading.