Stratify backtests Indian index option strategies on a year of real 1-minute NIFTY options data. Describe the trade in plain words — the legs, when to enter, how to manage it while it is open — and the server runs it against every trading day in the window and returns what actually happened. Every result carries P&L after real charges (brokerage, STT, exchange and SEBI fees, GST, stamp duty) and modelled slippage, return on margin from a SPAN calibration, and an honesty panel: an out-of-sample split, walk-forward folds, a bootstrap interval, and a deflated Sharpe that accounts for how many variants you have already tried. No ratio is reported below 30 trades. Every backtest gets a shareable report page with the equity curve, the rules card and every trade. The open strategy protocol covers any number of legs on any expiry; strikes by delta, premium, points or percent; per-leg stops and targets; rolling a tested side; entry gates on VIX, index RSI/EMA/SMA and combined premium; clock-time entries and exits; and portfolio rules such as pausing after consecutive losses. Data never leaves the server — a backtest returns results, not rows. No trades are executed and no financial advice is given: the service never calls a strategy good. Free tier: NIFTY, one year, 100 backtests an hour. Requires a free Stratify account (sign in via OAuth).
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