Long Straddle Calculator

VolatilityvolatileDefined Risk

Buy a call and put at the same strike to profit from a large move in either direction.

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What Is a Long Straddle?

A long straddle is a two-leg volatility strategy in which you buy a call and a put on the same underlying with the same strike price and the same expiration, almost always at the money. You pay two premiums up front, and that combined debit is the most you can lose. The position has no directional bias: it does not matter whether the stock rises or falls, only that it moves far enough to cover what you paid.

The two legs work as a pair. If the stock rallies, the call gains intrinsic value dollar for dollar above the strike while the put expires worthless. If the stock falls, the put gains while the call expires worthless. Because you own both options, you are long vega and long gamma, so the position also gains when implied volatility rises or when the stock makes a fast move before expiration, even if it later reverses. The cost of that exposure is theta: both options lose time value every day, and the decay accelerates in the final weeks.

The payoff diagram at expiration is a V shape with its point at the strike. The loss is greatest when the stock finishes exactly at the strike, where both options expire worthless, and it shrinks as the stock moves away in either direction until it crosses one of the two breakevens. Above the upper breakeven the profit is theoretically unlimited. Below the lower breakeven the profit grows until the stock reaches zero.

Setup

BUY1x ATM CALL

BUY1x ATM PUT

Max Profit

Unlimited (large move either direction)

Max Loss

Total premium paid

Breakeven

Strike - total premium | Strike + total premium

Long Straddle Example

XYZ trades at $100 with 45 days to expiration. You buy the $100 call for $4.20 and the $100 put for $3.80. The net debit is $8.00 per share, or $800 per straddle. The breakevens are $92.00 and $108.00, so XYZ needs to move 8 percent in either direction by expiration for the trade to finish profitable.

Stock at expiration	Result
$100 (unchanged)	Both options expire worthless. You lose the entire $800 debit, the maximum loss.
$108.00 or $92.00	Breakeven. One option is $8.00 in the money, exactly offsetting the debit. P&L is $0.
$115	The call is $15.00 in the money and the put is worthless. The position is worth $1,500, so profit is $1,500 minus the $800 debit, or +$700.
$85	The put is $15.00 in the money and the call is worthless. Profit is again $1,500 minus $800, or +$700.

Maximum loss is the $800 debit if XYZ closes at exactly $100. Profit is unlimited above $108.00 and grows all the way down to $0 below $92.00. Every dollar the stock moves past a breakeven adds $100 of profit per straddle.

When to Use a Long Straddle

You expect a large move but have no strong opinion on direction, for example ahead of a court ruling, an FDA decision, or a product launch.
Implied volatility is low relative to its own history, so the two options are cheap and a rise in IV will lift the position even before the stock moves.
The stock has a history of gapping well beyond the move the options market is pricing in, which you can estimate by comparing the straddle price to past earnings moves.
You want to be long gamma into a period of expected turbulence and are willing to pay theta for it.
Typical entries use 30 to 90 days to expiration to keep daily time decay manageable; very short-dated straddles decay fast and need an immediate move.

Risks to Understand

Time decay is the primary enemy. With two long options, the position bleeds theta every day, and the rate roughly doubles in the final two weeks before expiration.
An implied volatility crush after a known event can cut the value of both options sharply even when the stock moves. This is why straddles bought right before earnings often lose money on a moderate move.
The stock must move more than the total premium paid, which for an at-the-money straddle is often a larger percentage move than the stock typically makes in the time available.
Wide bid-ask spreads on two legs mean you give up edge on entry and exit. On thinly traded names the round-trip slippage can equal several days of expected movement.
A whipsaw, where the stock moves sharply and then returns to the strike by expiration, leaves you with the maximum loss despite having been right about volatility along the way.

Managing the Trade

Many traders exit a straddle once it has doubled the premium at risk, or when the stock has moved to one breakeven, rather than hoping for a further extension.
After a sizable move, the winning leg can be sold to lock in profit while the losing leg is kept as a cheap lottery ticket for a reversal.
Gamma scalping is a common approach for larger accounts: buy or sell shares against the position as the stock moves to lock in gains from each swing while keeping the options.
If the stock has not moved by the halfway point of the trade, closing early saves the steepest part of the time decay curve.
Rolling the untested leg toward the current price converts the straddle into a strangle and reduces the total capital at risk, at the cost of a wider breakeven range.

Long Straddle FAQs

How do you calculate long straddle breakeven?: Add the total premium paid to the strike for the upper breakeven and subtract it from the strike for the lower breakeven. If you pay $8.00 for a $100 straddle, the breakevens are $108 and $92. The stock must close outside that range at expiration for the trade to profit.
What happens to a straddle after earnings?: Implied volatility usually collapses immediately after the report, which reduces the extrinsic value of both options at the same time. If the stock moves less than the straddle price implied, the position typically loses money even though the stock did move. Profit requires a move larger than the priced-in expectation, not just any move.
Is a long straddle risky?: The risk is defined and limited to the premium paid, so you cannot lose more than the debit. However, the probability of losing some or all of that premium is high because the stock must move a meaningful amount in a limited time. The main risks are time decay and a drop in implied volatility.
Straddle vs strangle: which is better?: A straddle uses the same at-the-money strike for both legs, costs more, and has a narrower breakeven range. A strangle uses out-of-the-money strikes, costs less, but needs a bigger move to profit. Straddles suit traders who want higher sensitivity to a moderate move, while strangles suit those who expect a very large move and want to limit the debit.
How much does a stock need to move for a straddle to be profitable?: At expiration the stock must move more than the total premium paid, in either direction. The straddle price expressed as a percentage of the stock price is roughly the market's expected move. In the example, an $8 straddle on a $100 stock implies about an 8 percent move, so the stock must beat that to pay off at expiration.
Should I hold a long straddle to expiration?: Usually not. Most of the value in a long straddle comes from gamma and vega while there is still time left, and both options lose time value fastest in the final weeks. Traders typically close or adjust after the expected move happens or when a set fraction of the premium has eroded.

Related Strategies

Short Straddle Long Strangle

What Is a Long Straddle?

Long Straddle Example

Stock at expiration	Result
$100 (unchanged)	Both options expire worthless. You lose the entire $800 debit, the maximum loss.
$108.00 or $92.00	Breakeven. One option is $8.00 in the money, exactly offsetting the debit. P&L is $0.
$115	The call is $15.00 in the money and the put is worthless. The position is worth $1,500, so profit is $1,500 minus the $800 debit, or +$700.
$85	The put is $15.00 in the money and the call is worthless. Profit is again $1,500 minus $800, or +$700.

When to Use a Long Straddle

You expect a large move but have no strong opinion on direction, for example ahead of a court ruling, an FDA decision, or a product launch.

Implied volatility is low relative to its own history, so the two options are cheap and a rise in IV will lift the position even before the stock moves.

The stock has a history of gapping well beyond the move the options market is pricing in, which you can estimate by comparing the straddle price to past earnings moves.

You want to be long gamma into a period of expected turbulence and are willing to pay theta for it.

Typical entries use 30 to 90 days to expiration to keep daily time decay manageable; very short-dated straddles decay fast and need an immediate move.

Risks to Understand

Time decay is the primary enemy. With two long options, the position bleeds theta every day, and the rate roughly doubles in the final two weeks before expiration.

An implied volatility crush after a known event can cut the value of both options sharply even when the stock moves. This is why straddles bought right before earnings often lose money on a moderate move.

The stock must move more than the total premium paid, which for an at-the-money straddle is often a larger percentage move than the stock typically makes in the time available.

Wide bid-ask spreads on two legs mean you give up edge on entry and exit. On thinly traded names the round-trip slippage can equal several days of expected movement.

A whipsaw, where the stock moves sharply and then returns to the strike by expiration, leaves you with the maximum loss despite having been right about volatility along the way.

Managing the Trade

Many traders exit a straddle once it has doubled the premium at risk, or when the stock has moved to one breakeven, rather than hoping for a further extension.

After a sizable move, the winning leg can be sold to lock in profit while the losing leg is kept as a cheap lottery ticket for a reversal.

Gamma scalping is a common approach for larger accounts: buy or sell shares against the position as the stock moves to lock in gains from each swing while keeping the options.

If the stock has not moved by the halfway point of the trade, closing early saves the steepest part of the time decay curve.

Rolling the untested leg toward the current price converts the straddle into a strangle and reduces the total capital at risk, at the cost of a wider breakeven range.

Long Straddle FAQs

How do you calculate long straddle breakeven?

Add the total premium paid to the strike for the upper breakeven and subtract it from the strike for the lower breakeven. If you pay $8.00 for a $100 straddle, the breakevens are $108 and $92. The stock must close outside that range at expiration for the trade to profit.

What happens to a straddle after earnings?

Implied volatility usually collapses immediately after the report, which reduces the extrinsic value of both options at the same time. If the stock moves less than the straddle price implied, the position typically loses money even though the stock did move. Profit requires a move larger than the priced-in expectation, not just any move.

Is a long straddle risky?

The risk is defined and limited to the premium paid, so you cannot lose more than the debit. However, the probability of losing some or all of that premium is high because the stock must move a meaningful amount in a limited time. The main risks are time decay and a drop in implied volatility.

Straddle vs strangle: which is better?

A straddle uses the same at-the-money strike for both legs, costs more, and has a narrower breakeven range. A strangle uses out-of-the-money strikes, costs less, but needs a bigger move to profit. Straddles suit traders who want higher sensitivity to a moderate move, while strangles suit those who expect a very large move and want to limit the debit.

How much does a stock need to move for a straddle to be profitable?

At expiration the stock must move more than the total premium paid, in either direction. The straddle price expressed as a percentage of the stock price is roughly the market's expected move. In the example, an $8 straddle on a $100 stock implies about an 8 percent move, so the stock must beat that to pay off at expiration.

Should I hold a long straddle to expiration?

Usually not. Most of the value in a long straddle comes from gamma and vega while there is still time left, and both options lose time value fastest in the final weeks. Traders typically close or adjust after the expected move happens or when a set fraction of the premium has eroded.