Long strangle
A long strangle is a two-legged, defined-risk, volatility-focused option strategy. You buy an out-of-the-money put and an out-of-the-money call with the same expiration, paying a net debit. The chart below shows a long strangle with put strike 95 at $3, call strike 105 at $3, and the profit/loss diagram.
Greeks and this strategy
| Greek | How it behaves |
|---|---|
| Delta | Near zero with balanced OTM legs. Shifts positive on rallies and negative on declines. |
| Theta | Negative. Both long OTM legs decay while the stock remains between strikes. |
| Gamma | Positive. Moves toward either strike increase directional delta exposure. |
| Vega | Positive. Benefits from rising implied volatility before a catalyst; hurts on vol crush. |
Overview of long strangle
A long strangle combines a long put at a lower strike with a long call at a higher strike. Both legs share the same expiration date. Maximum loss is limited to the total premium paid. Maximum profit is theoretically unlimited on the upside and substantial on the downside. Each contract represents 100 shares of the underlying (relevant for the US market).
Market outlook for long strangle
Traders open a long strangle when they expect a large move in the underlying but want a lower entry cost than a straddle. Wider strike spacing reduces the debit but requires a larger move to reach profitability. The strategy benefits from rising implied volatility before a catalyst such as earnings or macro events.
How to open a long strangle
Open the position by buying a put below the current price and a call above the current price with the same expiration. Both orders are typically placed together as a single strangle order. The net debit paid is the sum of both premiums. Strike selection balances cost against the size of move needed to profit.
Profit/loss diagram for a long strangle
Maximum loss equals the total debit paid and occurs if the stock closes between the strikes at expiration. Upside profit is unlimited above the upper break-even; downside profit grows below the lower break-even. For example, buying a $95 put for $3.00 and a $105 call for $3.00 creates a $6.00 debit. Break-even points at expiration are $89 and $111.
How to enter a long strangle
Submit a strangle order to your broker, specifying both strikes, expiration, and a limit price for the combined debit. The order is filled when the market accepts your limit debit or better. Opening the strangle debits your account for the total premium plus commissions.
How to exit a long strangle
Close the position before expiration by selling both the put and the call. If the combined value exceeds the entry debit, you realize a profit. At expiration, if the stock is between the strikes, both legs expire worthless and the full debit is lost.
The impact of time decay on a long strangle
Time decay works against the long strangle when the underlying remains between the strikes, eroding the extrinsic value of both options. Because both legs start out of the money, time decay can be significant near expiration without a large move. Rising implied volatility tends to increase both premiums.