Weekly Iron Butterfly SPY (1085) Backtest | AI Velocity

Weekly Iron Butterfly SPY (1085) Backtest

Total P&L
+$1,618
Jan 5, 2026 → Sep 11, 2026
Win Rate
86.7%
13 wins / 2 losses
Total Trades
15
Mon (Tue if holiday) entries
Potential Trading Weeks
33
Weeks with price data
Avg P&L / Week
+$49
Across 33 weeks
Avg Annual Profit
+$2,550
Avg week P&L × 52
Capital Required
$245
Avg max loss / trade
Avg Annual Return
1041.8%
Annual profit / avg capital
Profit Factor
4.49
Gross wins / gross losses
Sharpe Ratio
3.31
Week × √52 annualised
Max Drawdown
$464
Peak-to-trough equity
Payoff Ratio
0.69x
Avg win / avg loss

📈 Equity Curve

⚙️ Strategy Configuration

Ticker
SPY
Contracts
1
Structure
Iron Butterfly
Short Strikes
ATM
Wing Width
1.5% of SPY
Entry Days
Mon (Tue if holiday)
Entry Time
9:40 ET
Exit
Thu 15:40 ET
Expiry
Same-week Friday
Profit Target
+$150 / contract
Stop Loss
None

Net-Credit Filter — live floor ≥ $700

Minimum Net CreditEntries / WeeksTotal P&LWin RateAvg / Trade
> $0 (none)33 / 33+$2,01275.8%+$61
$60031 / 33+$2,10177.4%+$68
$65022 / 33+$1,29972.7%+$59
$700 ← live15 / 33+$1,61886.7%+$108
$7506 / 33+$60383.3%+$100
$8004 / 33+$652100.0%+$163

Strike Construction

LegStrikeActionRole
Long PutATM − wingBuyDownside protection — caps max loss
Short PutATMSellBody of the butterfly
Short CallATMSellBody of the butterfly
Long CallATM + wingBuyUpside protection — caps max loss

P&L Mechanics

Net credit at entry (9:40 ET)Maximum profit if SPY finishes inside the short strikes
SPY beyond a long wingMaximum loss = wing width × 100 − credit
Avg net credit collected$755 per contract
ExitClosed as soon as P&L reaches +$150 per contract (checked every minute); otherwise at Thu 15:40 ET by a scheduled job

📊 Win / Loss Analysis

Win Rate Breakdown

Winners (13)86.7%
86.7%
Losers (2)13.3%
13.3%

P&L Breakdown

Average winner+$160
Average loser-$232
Best trade+$196 (2026-04-27)
Worst trade-$258 (2026-04-13)
Total gross wins+$2,082
Total gross losses-$464

⚠️ Risk Assessment

Max Drawdown

$464

Worst Single Loss

-$258

Avg Max Loss / Trade

$245

Profit Factor

4.49

Sharpe (Annualised)

3.31

Payoff Ratio

0.69x

💡 Key Insights

✅

Net Gain Under Live Rules

Total P&L of +$1,618 over 15 trades, 87% winners. Average winner +$160 vs average loser -$232.

🎯

Profit Target +$150

13 of 15 trades closed early at the target; the rest were held to the Thursday 15:40 ET exit. No stop loss: in testing, every stop made results worse, because dips usually recovered and overnight gaps jumped the stop. The target was chosen on this same data, so these results flatter it.

⚠️

Small Sample

Only 15 weekly trades in the window. A single bad week moves every statistic on this page; treat the Sharpe and annualised figures as rough.

⚠️

Gross of Costs

No commissions or slippage are modelled. At $4 per round trip (the slippage assumed in the exit-rule sweep) the total would be +$1,558.

📋 Full Trade Log is not displayed on mobile devices to prevent page freezing. View this report on a desktop browser to see all 15 trades.

📋 Full Trade Log (15 trades)

EntryDayExpirySPY 9:40 LP/SP/SC/LCCredit InCost to Close P&LCum P&LExit
2026-01-20 Tuesday 2026-01-23 $682.48 672/682/682/692 $729 $579 +$150 +$150 01-21 11:26 target
2026-02-02 Monday 2026-02-06 $691.95 682/692/692/702 $711 $561 +$150 +$300 02-04 10:28 target
2026-02-09 Monday 2026-02-13 $691.14 681/691/691/701 $712 $555 +$157 +$457 02-12 09:58 target
2026-02-17 Tuesday 2026-02-20 $682.48 672/682/682/692 $734 $584 +$150 +$607 02-19 12:07 target
2026-02-23 Monday 2026-02-27 $689.56 680/690/690/700 $715 $555 +$160 +$767 02-26 09:43 target
2026-03-02 Monday 2026-03-06 $681.00 671/681/681/691 $801 $643 +$158 +$925 03-03 12:54 target
2026-03-09 Monday 2026-03-13 $664.74 655/665/665/675 $850 $690 +$160 +$1,085 03-11 11:00 target
2026-03-16 Monday 2026-03-20 $669.02 659/669/669/679 $826 $676 +$150 +$1,235 03-18 10:48 target
2026-03-23 Monday 2026-03-27 $658.28 648/658/658/668 $827 $643 +$184 +$1,419 03-24 10:59 target
2026-04-06 Monday 2026-04-10 $656.56 647/657/657/667 $795 $1,001 -$206 +$1,213 04-09 15:40
2026-04-13 Monday 2026-04-17 $677.25 667/677/677/687 $714 $972 -$258 +$955 04-16 15:40
2026-04-27 Monday 2026-05-01 $714.36 704/714/714/724 $735 $539 +$196 +$1,151 04-30 09:30 target
2026-05-18 Monday 2026-05-22 $738.72 729/739/739/749 $709 $557 +$152 +$1,303 05-21 09:30 target
2026-06-08 Monday 2026-06-12 $741.62 732/742/742/752 $762 $605 +$157 +$1,460 06-09 15:22 target
2026-07-27 Monday 2026-07-31 $744.97 735/745/745/755 $709 $551 +$158 +$1,618 07-30 10:28 target