Broken Wing Butterfly

Options Spreads Advanced Singapore STI DBS OCBC UOB SINGTEL KEPPEL CAPLAND

Directional bias with profit zone around middle strike

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Quick Reference

Strategy Type Credit or Debit Spread (Directional + Neutral Hybrid)
Market Outlook Directional bias with profit zone around middle strike
Risk Profile Asymmetric - no risk on one side, defined risk on the other
Reward Profile Maximum profit at middle strike at expiration
Time Horizon 30-45 DTE recommended
Iv Environment Moderate to high IV preferred for credit entry
Breakeven Complex - depends on structure (one or two breakevens)

Payoff Profile

The broken wing butterfly creates an asymmetric payoff with maximum profit at the middle strike. One side has no risk (or minimal risk) while the other side has defined but larger risk. This differs from a standard butterfly which has symmetric risk on both sides. • At the middle (short) strike at expiration • The narrower wing side (if credit received covers that wing) • The wider wing side (risk = wider wing width - credit) • Around middle strike, skewed toward one direction

Singapore Market Details

Primary Instruments STI Index Options, DBS Options, OCBC Options, UOB Options
Mas Compliance MAS regulated; retail trading permitted with licensed broker; defined risk strategy
Contract Size S$5 per point for STI; 1,000 shares for equities; 100 shares for ETFs
Trading Hours 9:00 AM - 5:00 PM SGT (Pre-Open 8:30 AM - 9:00 AM)
Expiry Options Monthly expiries; weekly options limited availability
Settlement T+2 for shares; T+1 for SGX derivatives
Tax Treatment No capital gains tax for individuals in Singapore
Stamp Duty 0.2% on share purchases (buyer and seller each); options exempt
Cdp Account Central Depository (CDP) account required for share ownership; not needed for options

Frequently Asked Questions

Why is the 'wide wing' the risky side?

The wide wing side has more distance between strikes, meaning there's more room for loss to accumulate. If price moves to that side, you can lose the full width of the wide wing minus any protection from the narrow wing and credit. The narrow wing side has less exposure.

Can I always enter a broken wing butterfly for credit?

Not always. Credit depends on IV levels, skew, and strike selection. In low IV environments, you may need to enter for a small debit. The key is to aim for credit by adjusting wing widths appropriately, but don't force a poor structure just for credit.

What happens if price is exactly at my middle strike at expiration?

This is the maximum profit scenario. Both short options at the middle strike are exactly ATM (may need to be managed for pin risk), and your long wings have declined significantly in value. The difference (plus any credit) is your profit.

Is a broken wing butterfly harder to manage than a regular butterfly?

Similar complexity, but with different focus. Regular butterflies have symmetric risk; BWBs require monitoring the wide wing side specifically. The advantage is that the narrow wing side often requires no attention (no risk). Focus your management on the wide wing side.

Should I use puts or calls for my broken wing butterfly?

Use puts for bullish view (put BWB with wide wing below). Use calls for bearish view (call BWB with wide wing above). The wide wing always goes in the direction you DON'T want price to move. Choose based on your directional outlook.

How do I calculate whether I have 'no risk' on the narrow wing side?

Compare credit received to narrow wing width. If credit ≥ narrow wing width, you have no risk on that side. Example: Narrow wing is 25 points, credit is 30 points. If price goes beyond narrow wing, you keep the 30 points credit, which covers the 25 point wing and gives you 5 points extra profit.

When should I roll a broken wing butterfly?

Roll when: 1) Price is moving toward wide wing and you still have 21+ DTE, 2) You want to maintain the position but at different strikes, 3) You can roll for credit or minimal debit. Don't roll if: Close to expiration, already at significant loss, or thesis is broken.

Can I adjust a losing broken wing butterfly?

Yes. Options include: 1) Close narrow wing to convert to vertical spread, 2) Roll entire position to new strikes, 3) Add protection beyond wide wing to cap loss, 4) Simply close for defined loss. The best choice depends on remaining DTE and market view.

Why do broken wing butterflies have better risk/reward than standard butterflies?

BWBs can have better risk/reward because you can be paid (credit) to enter while maintaining butterfly-like max profit. However, this comes with asymmetric risk - you're trading symmetric risk for potentially getting paid on one side while accepting more risk on the other.

How does IV affect broken wing butterfly pricing?

Higher IV increases all option premiums, making it easier to achieve credit entry. Lower IV makes credit harder to achieve. Additionally, skew affects put vs call BWBs differently. Put skew (higher IV on OTM puts) makes put BWBs harder to structure for credit; call BWBs may be easier.

How do I optimize BWB structure for maximum credit while managing risk?

Optimize by: 1) Narrow the narrow wing (reduces cost of that protection), 2) Widen the wide wing (more premium from shorts, but more risk), 3) Move middle strike closer to current price (higher premium but less room), 4) Use higher IV environment. Balance these factors against your risk tolerance and probability assessment.

When would I use a double broken wing structure?

Use double broken wing (put BWB + call BWB) when expecting range-bound but with slight directional bias. It creates a wider profit zone than single BWB. Structure: Put BWB with wide wing below + Call BWB with wide wing above. Complex to manage but offers more flexibility.

How do Greeks differ in BWB vs standard butterfly?

Key difference is delta. Standard butterfly has near-zero delta (neutral). BWB has non-zero delta matching its directional bias. Put BWB has positive delta (bullish); Call BWB has negative delta (bearish). Gamma, theta, and vega are similar but slightly asymmetric due to unequal wings.

What's the optimal way to trade earnings with a BWB?

Two approaches: 1) Pre-earnings: Enter BWB with directional view, benefit from elevated IV for credit. Risk: Gap against you on wide wing. 2) Post-earnings: Enter immediately after move when IV is still high but falling. Safer but less premium. Always size conservatively for binary events.

How should I handle gamma risk in BWBs near expiration?

BWB gamma risk is concentrated at the short strikes. Near expiration: 1) Close by 21 DTE if not at target, 2) If at max profit zone at 14 DTE, decide whether to hold (high risk) or close (lock in profit), 3) Never hold into final week unless willing to manage pin risk and rapid P&L swings.

Related Strategies

Standard Butterfly
Iron Condor
Vertical Spread

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