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Long straddle
A long straddle is a two-legged, defined-risk, volatility-focused option strategy. You buy a call and a put with the same strike and expiration, paying a net debit. The chart below shows a long straddle with call and put strike 100 at $5 each and the profit/loss diagram.
Greeks and this strategy
| Greek | How it behaves |
|---|---|
| Delta | Near zero at entry when both legs share the same strike. Becomes positive or negative as the stock moves away from the strike. |
| Theta | Negative. Both long legs lose extrinsic value daily when the stock stays near the strike. |
| Gamma | Positive. Delta changes rapidly on large moves in either direction. |
| Vega | Positive. Rising implied volatility increases both premiums; IV crush hurts. |
Overview of long straddle
A long straddle combines a long call and a long put at the same strike price and expiration date. Maximum loss is limited to the total premium paid for both legs. 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 straddle
Traders open a long straddle when they expect a large move in the underlying price but are uncertain about direction. The strategy profits from rising implied volatility and large price swings. If the stock stays near the strike through expiration, both options lose value and the position realizes maximum loss.
How to open a long straddle
Open the position by buying a call and a put at the same strike and expiration. Both orders are typically placed together as a single straddle order. The net debit paid is the sum of both premiums. Traders often choose at-the-money strikes to balance call and put costs and maximize sensitivity to movement.
Profit/loss diagram for a long straddle
Maximum loss equals the total debit paid and occurs if the stock closes at the strike at expiration. Upside profit is unlimited above the upper break-even; downside profit grows as the stock falls below the lower break-even. For example, buying a $100 call for $5.00 and a $100 put for $5.00 creates a $10.00 debit. Break-even points at expiration are $90 and $110.
How to enter a long straddle
Submit a straddle order to your broker, specifying the strike, expiration, and a limit price for the combined debit. The order is filled when the market accepts your limit debit or better. Opening the straddle debits your account for the total premium plus commissions.
How to exit a long straddle
Close the position before expiration by selling both the call and the put, either as a single straddle order or as separate legs. If the combined value exceeds the entry debit, you realize a profit. At expiration, one leg typically retains intrinsic value while the other expires worthless, unless the stock lands exactly at the strike.
The impact of time decay on a long straddle
Time decay works against the long straddle when the underlying remains near the strike, eroding the extrinsic value of both options. As expiration approaches without a significant move, the position loses value. Rising implied volatility tends to increase both premiums; falling volatility reduces them.