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Key Takeaways
- ZEBRA stands for zero extrinsic back ratio: two long in-the-money options against one short at-the-money option at the same expiration.
- Choose the strikes and prices so the long options’ combined extrinsic value offsets the short option’s extrinsic value.
- The call example buys two 90 calls at $14.50 and sells one 100 call at $9.00 for a $2,000 debit.
- Its quoted deltas produce 90 share equivalents at entry; calculate current Greeks again as prices and time change.
- At expiration the example earns $1,500 at $115, loses $1,000 at $95 and has $2,000 maximum loss at or below $90.
- The put version buys two higher-strike in-the-money puts and sells one lower-strike at-the-money put.
What is a ZEBRA options strategy?
A ZEBRA options strategy is a zero extrinsic back ratio: a position that buys two in-the-money options and sells one at-the-money option of the same type and expiration, with strikes chosen so the extrinsic value bought offsets the extrinsic value sold. The call version tracks 100 shares above the short strike at expiration for a fraction of the share cost, and its loss is capped at the debit.
The call version buys two in-the-money calls and sells one at-the-money call with the same underlying, expiration and deliverable. Select the strikes and prices so the combined extrinsic value bought offsets the extrinsic value sold.
The put version buys two higher-strike in-the-money puts and sells one lower-strike at-the-money put. Calculate the same net extrinsic balance from its three contracts.
Formula
Call ZEBRA expiration P/L per share = 2 × max(S_T − K_long, 0) − max(S_T − K_short, 0) − net debit- K_long is the lower strike bought twice; K_short is the higher strike sold once. All three calls share an expiration.
- Net debit = 2 × long call premium − short call premium. Net extrinsic = 2 × long call extrinsic − short call extrinsic.
- Net delta = 2 × long call delta − short call delta. Multiply by 100 for one standard package’s share equivalents.
- For a put ZEBRA, use 2 × max(K_long − S_T, 0) − max(K_short − S_T, 0) − net debit, with the long strike above the short strike.
- Use the actual entry prices for expiration profit and the current option values for a position closed before expiration.
ZEBRA example: debit, extrinsic value, and delta
XYZ trades at $100. Buy two 90 calls for $14.50 each and sell one 100 call for $9.00 at the same expiration. Each long call has $10 intrinsic value and $4.50 extrinsic value; the short call has $9 extrinsic value. Quoted deltas are 0.72 for each long call and 0.54 for the short call.
- Net extrinsic: 2 × $4.50 − $9.00 = $0.00 per share
- Entry debit: (2 × $14.50 − $9.00) × 100 = $2,000
- Entry share equivalents: (2 × 0.72 − 0.54) × 100 = 90
- Expiration breakeven: $100; 2 × ($100 − $90) repays the $20 debit
- At $115: [2 × $25 − $15 − $20] × 100 = $1,500 profit
- At $95: [2 × $5 − $0 − $20] × 100 = $1,000 loss
- At or below $90: $2,000 maximum expiration loss
Above $100 at expiration, the example earns the same dollar profit as 100 shares bought at $100. Between $90 and $100, its payoff changes at twice the stock’s rate. At or below $90, the option loss stays at $2,000. Compare current value separately by repricing all three contracts.
Quoted deltas of 0.72 and 0.54 produce net delta of 2 × 0.72 − 0.54 = 0.90. One standard package starts with 90 share equivalents. Recalculate that exposure from the current options as the stock price and time change.
Payoff at expiration
Illustrative figures from this page's example, priced by the InsiderFinance options profit calculator. Probability assumes 25% volatility, a 4% rate and 45 days to expiration.
- Max Profit
- Unlimited
- Max Loss
- -$2,000.00
- Break-Even
- $100.00
Interactive payoff loads as you reach it
Load this setup on live SPY options. Move the strikes and scrub to any date.
Build This StrategyZEBRA payoff at expiration
At or below $90, every call has zero intrinsic value and the package loses its $2,000 debit. Between $90 and $100, the two long calls gain $200 for each $1 stock rise while the short call has zero intrinsic value.
At $100, intrinsic value equals the debit and the position breaks even. Above $100, the two long calls gain $200 while the short call subtracts $100 for each $1 stock rise. The net payoff increases by $100 per dollar, matching 100 shares in this region.
At $115, profit is $1,500. At $95, the loss is $1,000. At $60, the loss remains $2,000. The corresponding 100-share position bought at $100 earns $1,500, loses $500 and loses $4,000 at those prices.
ZEBRA P&L and Greeks before expiration
Position value is twice the long-call price minus the short-call price. Add the signed delta, gamma, theta and vega using the same quantities. The entry extrinsic balance and current Greek sensitivities are separate calculations.
Compare the position at the stock prices, dates and volatility inputs in the plan. A ZEBRA closed before expiration realizes its closing package value minus the original debit.
ZEBRA vs backspread, synthetic stock, and shares
A call ZEBRA combines a bull call spread with an extra long lower-strike call. A conventional call backspread puts the extra long options at the higher strike. A synthetic long stock position instead pairs a long call and short put at one strike. The options profit calculator compares entry cash, share-equivalent exposure, breakeven and complete dollar outcomes for each structure alongside a share purchase.
Managing a ZEBRA and assignment
For physically settled contracts, short-call assignment sells shares while the two long calls remain open. Manage those shares and remaining options as one position. Use the exact contracts and quantities throughout the trade plan.
Risks and limitations of the ZEBRA strategy
- Size the trade from the steeper loss zone. Between the strikes, the ZEBRA loses faster than shares at expiration. At $95 the example loses $1,000 against $500 for 100 shares, because both long calls lose intrinsic value at once.
- Recalculate theta and vega as the trade moves. Zero extrinsic holds only at entry. As price and time change, the three options’ time values move apart, so the position carries its own theta and vega.
- Read the share equivalents from current deltas. The 90 share equivalents come from quoted deltas at entry and change as the stock moves; between $90 and $100 the expiration payoff changes at twice the stock’s rate.
- Roll all three contracts at new prices to hold the exposure longer. The options expire and collect no dividends.
- Manage an assignment and the two long calls as one position. The short call can be assigned on American-style contracts, which sells shares while the two long calls stay open.
Bottom line
Two 90 calls against one short 100 call give the ZEBRA stock-like upside for a fraction of the share price, with the loss capped at the debit. Size it from the debit and the steeper loss between the strikes, and recalculate its delta as the stock and time move.
Clear answers
Frequently Asked Questions
Sources and Further Reading
- OIC: Options Pricing
- OIC: Delta
- OIC: Gamma
- OIC: Theta
- OIC: Bull Call Spread (Debit Call Spread)
- OIC: Leverage & Risk
- OCC: Characteristics and Risks of Standardized Options
How entries are sourced, calculated and updated: editorial methodology.