⟁ Butterfly Backtest
Option Type
Dates
For 0DTE set both dates the same. For multi-day (calendar/diagonal), set expiry to the short leg expiry.
Entry
Leave 16:00 for full day
CSV Import
Date Range
Strikes
IV Model
Flat: IV back-solved from entry debit, held constant. Best for sensitivity to price movement alone.
VIX-Scaled: IV moves proportionally with intraday VIX. More realistic; fetches extra data.
Exit Rules (simulation)
Confirm bars: target must hold for N consecutive bars before fill is credited.
Fill discount: exit value haircut vs mid (simulates selling at bid-side).
Target %: gain = X% of debit (50% → make half back).
Stop %: loss = X% of debit (100% = lose full debit).
P/L over Time
⟁
Enter trade parameters and click Run Backtest
Summary Comparison
Metric Baseline (Actual) Scenario
Date Time Type Strikes Debit Actual $ Simulated $ Exit IV