Seagull Spread

Advanced Spreads Advanced United Kingdom FTSE100 UK100 BP HSBA VOD BARC LLOY AZN SHEL GSK

Directional bias (bullish or bearish) with willingness to accept opposite-side risk

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Quick Reference

Strategy Type Directional / Risk Reversal Hybrid - Low-Cost Directional Play
Market Outlook Directional bias (bullish or bearish) with willingness to accept opposite-side risk
Risk Profile Capped risk in direction of bias; exposed risk on opposite side (like short put or short call)
Reward Profile Limited profit from spread component; funded by opposite-side premium
Time Horizon 30-60 days to expiration typical
Iv Environment Works in various IV environments; skew can help or hurt depending on direction
Breakeven Multiple breakevens depending on structure
Alternative Names Split Strike Risk Reversal, Funded Spread, Three-Way

Payoff Profile

Asymmetric payoff with capped profit on one side (spread) and exposed risk on the other side (naked short). The shape resembles a seagull in flight - wings tilted with one side capped and the other open.

United Kingdom Market Details

Primary Instruments FTSE 100 Index Options, UK Single Stock Options - works well on liquid underlyings with directional view
Fca Compliance Classified as complex instrument; appropriateness test required; naked short component requires understanding
Contract Size £10 per point for FTSE 100 index options; 1,000 shares for equity options
Trading Hours 08:00 - 16:30 GMT (LSE hours); FTSE 100 options trade until 16:30
Expiry Options Monthly expiries (3rd Friday); Weekly options available on FTSE 100
Settlement Cash-settled for index options; Physical delivery for equity options
Margin Requirements Margin required on the naked short option (put for bullish seagull, call for bearish); spread side is covered
Spread Betting Seagull can be replicated with 3 spread bet positions; tax advantages in spread betting format
Stamp Duty Not applicable for options; 0.5% only if shares purchased
Isa Wrapper Options not ISA-eligible; profits subject to Capital Gains Tax above £6,000 annual allowance (2024/25)
Tax Treatment Gains taxed as capital gains (10% basic rate, 20% higher rate); losses can offset gains
Risk Warning Seagull Spreads contain a naked short option (short put or short call). This creates substantial risk if the underlying moves sharply against your directional view. The short option has significant, potentially large loss potential. Only suitable for traders who understand and can manage naked option risk.

Frequently Asked Questions

Why is it called a 'Seagull'?

The payoff diagram resembles a seagull in flight - one wing tilted up (profit zone from the spread), one wing tilted down (loss zone from the naked short), and a body in the middle (neutral zone). The asymmetric 'wings' give it the seagull appearance.

Is a Seagull really 'free' or 'zero cost'?

The Seagull can be structured for zero or near-zero initial cash outlay - hence 'zero cost.' However, it's NOT risk-free. You're selling risk (the naked short option) to fund the position. If the market moves against you, you'll pay. It's 'zero cost' in terms of upfront cash, not zero risk.

Which is riskier - Bullish Seagull or Bearish Seagull?

Bearish Seagull is traditionally considered riskier because it contains a naked short call with theoretically unlimited upside risk. Bullish Seagull has a naked short put with risk limited to the strike price (if underlying goes to zero). However, market crashes can be severe too, so both require respect.

Can I get assigned on the naked short option?

Yes! The naked short put (bullish seagull) or naked short call (bearish seagull) can be assigned. For American-style options, assignment can happen any time (though usually near expiration or ex-dividend). European-style index options settle in cash at expiration only.

What happens if I'm assigned on the naked short?

If assigned on a naked short put (bullish seagull): You must buy the underlying at the strike price - you now own it. If assigned on a naked short call (bearish seagull): You must sell the underlying at the strike price - you're now short. You then need to decide whether to keep or close the position.

How do I choose between a Seagull and a simple vertical spread?

Choose Seagull when: (1) You want zero or near-zero cost, (2) You're willing to accept naked option risk, (3) You have a view on both direction AND where you'd be willing to take assignment. Choose vertical spread when: (1) You want defined risk, (2) You're willing to pay the debit, (3) You don't want naked option exposure.

What's the ideal delta for the naked short option?

Typically 0.15-0.25 delta. Lower delta (0.10-0.15) provides more cushion but less premium to fund the spread. Higher delta (0.25-0.30) provides more premium but more risk. Choose based on technical levels and your risk tolerance.

How does the Seagull compare to a Collar?

A Collar requires owning the underlying stock (protective put + covered call). A Seagull is purely options - no underlying position required. Collar is defined risk on both sides. Seagull has naked risk on one side. Both can be zero-cost, but the risk profiles differ significantly.

Can I roll just the naked short without touching the spread?

Yes! This is a common adjustment. If the underlying is approaching your short option, you can buy it back and sell a new one further OTM. This costs money (debit) but gives more room. The spread remains unchanged.

What happens to my margin if the naked short is threatened?

Margin requirements increase as the naked short option moves toward or into the money. You may receive a margin call requiring additional funds. Monitor margin closely and have a plan to close or adjust before margin becomes critical.

How do institutions use Seagulls for hedging?

Very common in FX hedging: Importers (need to buy foreign currency) use bullish seagulls on the currency. Exporters (need to sell foreign currency) use bearish seagulls. The zero-cost nature is attractive for corporate treasuries. Similar use in commodity hedging by producers and consumers.

What's the impact of correlation on a portfolio of multiple Seagulls?

Multiple Bullish Seagulls on correlated underlyings = concentrated crash risk (all short puts get hit together). Multiple Bearish Seagulls on correlated underlyings = concentrated rally risk. Diversify across uncorrelated underlyings or balance bullish and bearish Seagulls.

How can I use skew to optimize Seagull construction?

For Bullish Seagull: Put skew (elevated OTM put IV) helps - your short put receives more premium. Check IV at short put strike vs ATM. For Bearish Seagull: Typically less favorable skew, but check call IV. Consider strike adjustments to optimize based on skew.

What's the optimal approach for Seagulls around earnings?

Don't hold through earnings - gap risk is too high for the naked short. Best approach: (1) Close before earnings, (2) Reopen 1-2 days after when direction is clearer and IV is still elevated. Post-earnings IV provides good funding for the short option.

How does a 'Double Seagull' work?

A Double Seagull combines bullish and bearish Seagulls: Bull call spread + Short put (bullish) PLUS Bear put spread + Short call (bearish). Result: profit in the middle zone from spreads, but exposed to both crash and rally risk. Similar to a short strangle with spread wings for income. Use when expecting range-bound trading.

Related Strategies

Risk Reversal
Collar

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