Long Straddle

Two long legs at the same strike, chosen at the money so the position is balanced between up and down.

Enter both legs together so the position starts balanced. Buying one leg and waiting for the other exposes you to a move before the straddle is complete.

Exit by selling both options once the move happens, capturing the intrinsic gain on the winning leg plus any time value left in the loser. Many traders close well before expiry, since holding an at the money straddle into the final days is punishing if the move stalls.

Have a time stop. A long straddle is a race against decay, so if the expected catalyst passes without a move, closing quickly to salvage remaining premium usually beats hoping for a late swing.

Theta hits both legs at once, which makes a long straddle one of the most decay sensitive positions there is. At the money options carry the most time value, and that value bleeds fastest in the final weeks, so a flat market erodes the straddle from both sides.

This is why straddles are usually event trades rather than positions to hold for weeks. You want the move soon after entry, before decay eats the premium you paid for two options.

A long straddle is strongly long vega, so it gains value if implied volatility rises after you enter. That is a double edged sword around events. IV often climbs into a known event and then collapses immediately after it, the classic volatility crush.

The practical danger is buying a straddle when IV is already inflated ahead of the event. Even a genuine move can fail to pay off if the post event IV crush deflates both options faster than the price move inflates them. Entering when volatility is still cheap is far safer.

If the underlying moves sharply your way, you can sell the losing leg to recover some premium and let the winning leg run, or take the whole profit and close.

To reduce cost and decay, some traders convert a straddle into a strangle by rolling the untested leg to a further out of the money strike after a move, though this caps the recovery on that side.

If the move goes one way strongly, you can turn the profitable side into a spread by selling a further strike against it, locking gains and cutting the remaining decay.

By put-call parity, a long straddle has the same payoff as holding two long calls at the strike together with a short position in one unit of the underlying, or equivalently two long puts plus a long unit of the underlying.

That equivalence is mostly a teaching tool here. In practice the two option straddle is far simpler to place and carries no obligation to short or hold the underlying, so traders build it directly rather than through the synthetic route.