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Neutral OutlookDefined RiskIntermediate LevelNeutral

Iron Butterfly

Sell an ATM Straddle and buy OTM protective wings (Call & Put) to create a defined-risk, high-credit neutral strategy.

Ideal IV Regime
High IV (Ideal for Selling)
Capital Required
Medium (₹40k - ₹75k)
Holding Duration
1 to 3 Weeks
Breakeven Formula
Lower BE = Center Strike - Net Credit; Upper BE = Center Strike + Net Credit

Interactive Payoff Curve & Greeks Simulation

Visualize the theoretical profit & loss at expiry vs T+0 immediate day curves. Drag the simulation slider to stress-test your trade.

Interactive Payoff EngineRef: NIFTY 50 (@ 24,500)

Option Payoff Curve & Greeks

Lots:
Inspected Price
24,500
At Spot Price
P&L at Expiry
+9,500
Settlement Day Return
P&L Today (T+0)
+9,500
Immediate Move Est.
Breakeven Point(s)
₹24,120 | ₹24,880
Zero P&L Level
₹06,825-2,925BE: 24120BE: 24880Spot 24500238002450025200
Expiry P&L
T+0 Line (Today)
Breakeven
Drag slider below to stress test price moves
Simulation Slider: ₹23,800Selected: ₹24,50025,200

Net Option Greeks (Sensitivity Profile)

Values per 1 Lot standard unit
Net Delta (Δ)Direction
0.00
₹ move per ₹1 underlying change
Net Theta (Θ)Time Decay
+₹1,100/day
Daily decay erosion / accumulation
Net Vega (ν)Volatility
-₹850
P&L impact per 1% IV shift
Net Gamma (Γ)Curvature
-0.003
Rate of delta acceleration

Multi-Leg Position Structure (4 Legs)

ActionInstrument / StrikeTypeExpiryApprox DeltaEst. PremiumQty Ratio
BUY24,000 PE (Long Wing)PUTMonthly Expiry-0.15₹501x
SELL24,500 PE (ATM Short)PUTMonthly Expiry-0.50₹2401x
SELL24,500 CE (ATM Short)CALLMonthly Expiry+0.50₹2501x
BUY25,000 CE (Long Wing)CALLMonthly Expiry+0.15₹601x
Quantitative Mechanics

How the Structure Works

Generates maximum theta decay with built-in disaster insurance wings.

The Iron Butterfly is a defined-risk version of the Short Straddle. You sell the ATM Call and Put (collecting huge premium) and buy OTM Call and Put wings 500 points away. This caps your maximum loss strictly while offering massive 1:2 to 1:3 Return on Capital if the market pins near the center.

Strike Selection Criteria

Institutional Strike Selection Rules

1Sell ATM Call & Put; Buy wings 400-600 pts away on monthly contract.
Execution Playbook

Phased Execution Blueprint

Follow this structured sequence to eliminate emotional hesitation during order entry, lifecycle management, and final exit.

Phase 1Step 01

High IV Range Pin

Deploy when expecting market to pin near major psychological round number.

Checklist:
ATM strike
Wing width 500 pts

Interactive Margin & Position Size Calculator

Calculate exact lot sizing based on the 1-2% risk rule to preserve capital against Black Swan events.

Position Sizing & Margin Engine

Options Position Size & Max Risk Calculator

Total net liquid equity in your brokerage account

%

Recommended: 1.0% - 2.0% for disciplined longevity

Wing width max loss or defined mental/system SL

Max Risk Budget
4,500
1.5% of portfolio
Recommended Position Size
1 Lots (25 Qty)
Mathematically sized
Total Trade Max Loss
3,500
1.17% of total capital
Est. Margin Required
35,000
12% margin utilization
SEBI & NSE Risk Management Guideline:Never allocate more than 30% of total liquid capital to a single options expiration cycle, even with defined-risk spreads. Keep a minimum of 40% free cash buffer to accommodate sudden IV spikes, margin surges, or rolling adjustment requirements.
Capital Preservation

Rigorous Risk Rules & Adjustment Protocols

Non-negotiable parameters for stop-loss triggers, portfolio caps, and firefighting adjustments when market tests your strikes.

Stop-Loss Rule
Exit when loss reaches 1x initial credit collected.
Max Risk Budget
1.0% portfolio capital
Profit-Taking Trigger
Close at 35-50% profit.
Adjustment & Firefighting Protocols
  • Roll untested wing closer to ATM.
Margin & Capital Guideline:

SEBI hedged margin ~₹45,000 per lot.

Real Trade Case Study

NIFTY 24500 Iron Butterfly Trade Walkthrough

June 2024Full Win
Setup Context & Rationale

Nifty consolidated at 24,500 round number.

Legs Executed & Fill Prices

Sold 24500 CE/PE @ ₹490 / Bought 24000 PE & 25000 CE @ ₹110 (Net Credit = ₹380 = ₹9,500 on 25 qty)

Key Post-Trade Takeaways
  • Captured 50% ROI on margin with zero unlimited risk.
Trade Accounting
Capital Allocated:
₹45,000 margin
Maximum Risk Allowed:
₹3,000 (500 width - 380 credit = 120 pts)
Realized Net P&L:
+₹4,750 (Closed at 50% profit in 10 days)

Common Mistakes to Avoid

Holding into expiry day expecting exact 100% max profit pin

Why it happens: Greed.

Solution: Take profit at 40-50%.

Institutional Pro Tips

Offers a significantly better Risk-to-Reward ratio than standard Iron Condors.
Knowledge Base

Iron Butterfly FAQs

How is Iron Butterfly different from Iron Condor?

Iron Butterfly sells ATM options at the same strike (higher credit, tighter target). Iron Condor sells OTM options at different strikes (lower credit, wider target).

Alternative & Complementary Strategies

SEBI Regulatory Risk Warning:Trading in derivatives (Futures & Options) carries substantial risk of loss and is not suitable for all investors. A SEBI study revealed that 89% of individual traders in the equity F&O segment incurred net losses averaging ₹50,000 annually. Content provided here is strictly for educational, analytical, and quantitative learning purposes, and does not constitute investment advice or solicitation under SEBI (Investment Advisers) Regulations.