Size by premium at risk: max 2 percent account per trade, halved when VIX z>1.5, quartered near max-pain. Lots are quantity, not risk. The free method turns ego-sizing into math. The framework's checklist enforces it.
The worry: sizing by lots is how retail blows up — one lot can risk more than five depending on strike. The free calculator forces risk-first thinking. Survival compounds the edge; ego ends accounts.
Q: Free to use?
A: Yes — rule-based, part of starter kit.
Q: Why not by lots?
A: One lot can risk more than five; lots ≠ risk.
Q: Max risk?
A: 2% premium at risk, adjusted by regime.
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By Shakti Tiwari · Options AI research pillar. NISM XII certified. Educational only, not investment advice; verify before acting.