Options Strategy Guide

Synthetic Short

Bet against a stock without the complications of short selling.

Advanced Strongly Bearish Unlimited downside profit, unlimited upside loss — mirrors short stock

The Simple Version

Plain English — no jargon
Short selling a stock is complicated — you have to borrow shares and pay fees. A synthetic short skips all that. You buy a put (betting it falls) and sell a call (betting it won't rise). Together, these two options act like you shorted the stock. If it falls, you profit. If it rises, you lose — no share borrowing needed.

How It Works — Step by Step

  1. 1 Buy an at-the-money (ATM) put option
  2. 2 Sell an at-the-money (ATM) call option at the same strike and expiration
  3. 3 The combination mimics shorting 100 shares of stock
  4. 4 Profits as stock falls, loses as stock rises
  5. 5 Usually structured for near-zero net cost

Real Example

MSTR Illustrative example — not a recommendation
Stock Price
$380.0
Strike Price
$380.0
Premium Collected
$0.8/share
Days to Expiration
30d
Max Profit
$37920
Breakeven
$379.2
Annualized Return
0%

When to Use It — and When Not To

✓ Use when
  • You are strongly bearish and want short stock exposure without borrowing shares
  • Short selling is unavailable or too costly for the stock
  • You want a simpler way to express a bearish view
✗ Avoid when
  • You don't understand the unlimited upside loss risk
  • You are bullish or neutral
  • The options market is illiquid for this stock

Greeks & Mechanics (for the experienced trader)

Delta
Near -1.0 — behaves almost identically to shorting 100 shares.
Theta
Near zero — long put and short call theta roughly cancel.
Vega
Near zero — long put and short call vega roughly cancel.
Gamma
Low — position doesn't accelerate dramatically.

Key Risks

  • ⚠️ Unlimited loss if stock rises sharply — exactly like short selling
  • ⚠️ Short call can be assigned if stock rises above strike
  • ⚠️ Requires margin approval

Related Strategies

SyntheticLong RiskReversal LongPut

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