21 backtest essays for options strategies on QuantConnect LEAN. Side-by-side C# and Python. Powered by flashalpha-quantconnect.
Point-in-time replay since 2018. Backtest dealer positioning (GEX, VRP, vanna/charm, max pain) at any minute since 2018-04-16, then trade the same endpoints live. No look-ahead, no training-serving skew. The Historical API is an Alpha tier capability.
🚧 Pre-launch. Design spec at docs/superpowers/specs/2026-05-30-flashalpha-historical-examples-design.md.
The Historical API requires the Alpha tier ($1,499/mo): the only public source of aggregate vanna/charm exposure and point-in-time replay since 2018.
Quant teams, prop desks, and vol funds: flashalpha.com/for-quant-teams