Volume 2: Options Mechanics1/1
- 01Lessons 1-1
- 01Expiry Indexing: The Off-by-One That Silently Deleted 96% of My TradesA platform's expiry index 1 and your engine's expiries[1] can be different contracts — how a one-line convention mismatch gutted a ten-thousand-config validation run, and the data-driven method that catches it.11 min read11 min read→