Bearish strategy · Intermediate
Market outlook Bearish
Short call and long put at same strike mimic short stock.
Each row reprices every live leg independently. Entry premiums stay fixed.
| Underlying price | Move | Profit / loss |
|---|
Dollar-scaled for each leg's quantity, multiplier, expiry, and IV. Theta is per day; vega and rho are per one percentage-point move.
| Leg | Delta | Theta/day | Vega |
|---|
Strike configurations
Use a put strike below and call strike above the current price instead of the same strike for both.
Key difference: Lower or zero upfront cost with a flat zone between the strikes.
Best for: Traders who want cheaper stock-like short exposure and can tolerate a small dead zone near the current price.
Regularly roll both legs forward to a new expiration before they expire, maintaining continuous exposure.
Key difference: Avoids assignment and expiration mechanics, functioning as an ongoing short-stock substitute without a borrow.
Adjustment: Close both legs and re-open at the next monthly expiration and current strike.
Best for: Traders using this as a capital-efficient alternative to shorting shares directly.
Common questions
It avoids the need to locate and borrow shares and typically requires less capital than a margin-based short stock position, while delivering nearly identical dollar-for-dollar downside exposure.
The short call carries the same unlimited upside risk as a naked short call — losses grow without bound if the stock rallies sharply.
Yes, the short call can be assigned early if it moves deep in-the-money, which would force delivery of shares you don't own, requiring you to buy them on the open market.
Nearly — using the same strike for both legs makes it a pure synthetic short; using different strikes for the call and put creates a bearish risk reversal with a flat zone between them.
Deep dive
Detailed explanations, management techniques, and real-world scenarios
Scenario Lab
Explore how this position changes before expiration
Quick reference
Quick answers about when to use, capital needed, and key risks
Profit and loss
Compare max profit, max loss and break-even across common strategies
Custom calculator
Combine calls, puts, stock, quantities and different expirations
Risk sensitivity
Inspect Delta, Gamma, Theta, Vega and Rho
Same market view
Every bearish structure on the site, ranked by risk and capital needed
Same experience level
Structures with a comparable learning curve to the synthetic short stock
This calculator uses exact intrinsic value at a leg’s expiration and Black–Scholes theoretical value while that leg remains open. Position Greeks use the same visible legs and model assumptions. Results exclude fees, tax, liquidity, margin, early exercise and assignment behavior. Educational illustration only—not financial advice.