Synthetic Long Call
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What Is a Synthetic Long Call?
A synthetic long call is an options strategy that replicates the payoff profile of a long call option by combining a long stock position with a long put option.
Sometimes in options trading, you can create the exact same profit/loss profile using different combinations of instruments. This is called "synthetics." A Synthetic Long Call is constructed by: 1. **Long Stock:** Buying 100 shares. (Unlimited upside, significant downside risk). 2. **Long Put:** Buying 1 Put Option. (Gains if stock falls, limited loss equal to premium). When you combine these, the Put cancels out the downside risk of the stock below the strike price. The result is a position that has limited risk (floor) and unlimited upside—exactly like a Long Call Option.
Key Takeaways
- It is created by buying 100 shares of stock and buying one put option (ATM or ITM).
- It limits downside risk (like a call) while allowing unlimited upside potential (like a call).
- It is also known as a "Married Put" or "Protective Put."
- While functionally similar to a call, it includes dividends and voting rights (since you own the stock).
- It is capital intensive compared to simply buying a call option.
Why Use It Instead of a Regular Call?
If the payoff is the same, why bother holding the stock?
| Feature | Regular Long Call | Synthetic Long Call (Stock + Put) |
|---|---|---|
| Capital Required | Low (Just the premium). | High (Cost of 100 shares + Put premium). |
| Dividends | No. | Yes (You own the stock). |
| Voting Rights | No. | Yes. |
| Time Decay | High risk of expiring worthless. | Stock value doesn't decay; only the put does. |
Real-World Example: The Construct
Stock XYZ is at $100. 1. Buy 100 shares at $100. Cost: $10,000. 2. Buy 1 Put (Strike $100, Expiring in 1 month) for $3.00. Cost: $300. Total Cost: $10,300. Scenario A: Stock rises to $120. Stock Gain: $2,000. Put Value: $0 (Expires worthless). Net Profit: $1,700. (Similar to owning a call). Scenario B: Stock falls to $80. Stock Loss: $2,000. Put Gain: $2,000 (Intrinsic value of $100 strike put when stock is $80 is $20). Net Loss: Just the $300 premium paid for the put.
Put-Call Parity
This strategy works because of the fundamental rule of options pricing called "Put-Call Parity": **Call + Cash = Put + Stock** Rearranging the formula: **Call = Put + Stock - Cash** This proves mathematically that a Call is equivalent to holding the Stock and a Put (minus the financing cost of the cash).
FAQs
Yes. "Synthetic Long Call," "Married Put," and "Protective Put" all refer to the same position: Long Stock + Long Put. The name just depends on the trader's intent (hedging vs. directional bet).
Use it when you are bullish on a stock long-term (want dividends and voting rights) but are worried about a near-term earnings report or market crash. It acts as temporary insurance.
Yes. Since it involves buying stock and buying a put (defined risk), it is allowed in almost all IRA and brokerage accounts, unlike selling naked calls.
If the stock is below the strike, you exercise the put and sell your stock at the strike price (stopping the loss). If the stock is above, the put expires, and you simply keep holding the stock (uncapped gain).
In terms of "extrinsic value" (time value) paid, they are theoretically identical due to arbitrage. However, the capital outlay is much higher for the synthetic because you must buy the stock.
The Bottom Line
The Synthetic Long Call is a powerful tool for conservative stock investors. It allows you to participate in the market's upside with the peace of mind of a guaranteed exit price. While capital-intensive, it bridges the gap between stock ownership and options trading, offering the best features of both: unlimited potential and strictly limited risk.
More in Options Strategies
At a Glance
Key Takeaways
- It is created by buying 100 shares of stock and buying one put option (ATM or ITM).
- It limits downside risk (like a call) while allowing unlimited upside potential (like a call).
- It is also known as a "Married Put" or "Protective Put."
- While functionally similar to a call, it includes dividends and voting rights (since you own the stock).