The Backtest Lab is a self-contained EOD options backtester. It runs the CSP → assignment → covered-call wheel, cash-secured puts, buy-write covered calls, and short strangles & straddles against a synthetic chain built on a Black–Scholes surface with conservative bid/ask fills. Compare total return, CAGR, max drawdown, Sharpe, win rate, profit factor, and assignment count, then read the wheel's trade log to see the full CSP → assigned → covered call → called-away cycle.
Educational, not investment advice.