OPCIONARIO Options Encyclopedia
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Synthetic

Short Combo

A short OTM call plus a long OTM put — synthetic short stock with a bearish lean and a possible credit.

Max GainCapped — Put strike + Net credit (with the underlying at zero)
Max LossUnlimited (upward move)
Break-evenPut strike − Net debit if opened for a debit; Call strike + Net credit if opened for a credit
TypeSmall credit or debit
Ideal IV environmentIndifferent — the position is practically vega neutral

Profit / Loss Diagram

Short Combo at expiration

Long Put Short Call Ganancia (down) Pérdida ilim. (up)

What is this strategy?

The Short Combo is the inverse of the Long Combo — its bearish mirror. Construction: buy 1 OTM put and sell 1 OTM call. It replicates short stock exposure with less capital but with unlimited risk to the upside.

It suits bearish traders with limited capital. The sold call generates a credit that finances part of the purchased put.

The risk: the upside loss is unlimited, because the call is sold naked. It requires high margin and strict discipline.

Construction

ActionInstrumentStrikeExpirationExample
BUY1 PutOTM (lower)30-90 DTE+1 SPY May 440 Put
SELL1 CallOTM (higher)Same expiry-1 SPY May 460 Call

Example

SPY at $450, moderately bearish outlook.

  • Put Purchased (440) −$250 premium paid
  • Call Sold (460) +$300 premium received
  • Net Credit +$50
  • Zone Between Strikes Between $440 and $460 you keep exactly the $50 credit
  • Breakeven $460.50 (460 strike + 0.50 credit per share)
  • Profit if SPY = $400 +$4,050 ($4,000 from the put + $50 credit)
  • Maximum Gain $44,050 (440 × 100 + $50), if SPY falls to zero
  • Loss if SPY = $520 −$5,950 ($6,000 on the sold call − $50 credit) and growing without limit

The Greeks

δDelta — Bearish

Net delta near −1, similar to short stock.

θTheta — Neutral

The legs cancel each other out.

νVega — Neutral

They cancel.

γGamma — Mixed

Long gamma from the put, short gamma from the call.

Position Management

  1. 01
    Stop Loss on the Short Call If the underlying rises to the strike, close or roll.

Frequently Asked Questions

When should this structure be opened?
When you want cheap bearish exposure: you buy an out-of-the-money put and sell an out-of-the-money call, financing the first with the second.
What is its main risk?
The uncovered sold call, which exposes you to unlimited losses if the underlying rallies hard.
How is it managed before expiration?
By closing or rolling the call if price breaks higher. That is the leg concentrating all the structure’s risk.
Which strategy is it most often confused with?
The synthetic short, which pursues the same outcome using the same strike on both legs and leaving no neutral zone.