Long Strangle
A strangle buys a call above the market and a put below it in the same expiry: the cheap version of the straddle, demanding a larger move in exchange for risking less than half as much. On SPY at 580, buying the 560 put and the 600 call at 45 days costs $954 and needs price to leave the 550.46 – 609.54 band, 5.1% either way.
By the TradingCalculator.Pro team · Updated on · About us
Start your 7-day free trial →What it is and when to use it
A strangle is a straddle with the strikes pulled apart. Buying out-of-the-money options instead of at-the-money ones drops the cost from $2,435 to $954 — 61% less — because neither leg carries intrinsic value. All you pay for is time value, which makes the position both cheaper and more demanding.
You use it for the same reason as a straddle — expecting a big move without knowing the direction — but when conviction about the magnitude is high. If you believe SPY moves 8%, the strangle captures almost the same as the straddle for less than half the capital. If you believe it moves 4%, the strangle never reaches break-even and the straddle does.
Its other practical virtue is that less capital is at risk, which allows better sizing. For $2,435 you can buy one straddle or two and a half strangles, and that difference matters when the distribution of outcomes is a premium buyer’s: most of these trades end up worth zero, and the ones that win have to pay for the ones that do not.
How it is built
- Buy 1 out-of-the-money put, usually between 0.20 and 0.30 delta.
- Buy 1 out-of-the-money call, at a similar delta on the other side.
- Same expiry for both legs.
- The total cost is the sum of the premiums, and it is the maximum loss.
Choosing strikes by delta rather than distance in points is what makes a strangle symmetric. In this example the 560 put is at −0.223 delta and the 600 call at +0.293: not perfectly balanced, and that asymmetry is the underlying’s carry showing up again.
A full worked example
SPY at 580.00, 45 days to expiry, 560 put and 600 call — about 20 points out of the money on each side.
| Leg | Strike | Premium | Delta | Cash |
|---|---|---|---|---|
| Buy put | 560 | 4.05 | −0.223 | −$405 |
| Buy call | 600 | 5.49 | +0.293 | −$549 |
Net debit = 9.54 × 100 = $954, which is the maximum loss.
Between 560 and 600 at expiry both legs expire worthless and the whole $954 is lost. That 40-point band spans 6.9% of price, and it is where SPY finishes most six-week stretches.
Maximum profit, maximum loss and break-evens
The dead band is 59.08 points, 10.2% of price, against the straddle’s 48.70. You risk 61% less and demand 21% more movement.
- Maximum profit = unlimited to the upside; capped at (put strike − debit) × 100 = $55,046 to the downside.
- Maximum loss = debit = $954, with price anywhere between 560 and 600.
- Downside break-even = put strike − debit = 560 − 9.54 = 550.46.
- Upside break-even = call strike + debit = 600 + 9.54 = 609.54.
There is a practical difference between the two that the break-evens do not show: the straddle loses its maximum at one exact point (580), while the strangle loses the maximum across the whole 40-point range between strikes. The strangle loses 100% far more often.
The position Greeks
| Greek | Value | What it means here |
|---|---|---|
| Delta | +6.9 | Nearly neutral, with a slight bullish tilt from the asymmetry of the chosen strikes. |
| Gamma | +2.09 | Positive, a little lower than the straddle’s: out-of-the-money options carry less gamma than at-the-money ones. |
| Theta | −$22.09/day | Negative. Less than the straddle’s $27.00, but on a position costing less than half: in percentage terms the strangle bleeds faster. |
| Vega | +$130.71 | Strongly positive. A drop in implied volatility hurts this position badly. |
Compare theta against cost: $22.09 a day on $954 is 2.3% of capital per day; $27.00 on $2,435 is 1.1%. The strangle is cheaper in dollars and dearer in percentage, and that is the figure to look at when deciding how long to hold it.
Management: when to close, when to roll
Short time window
The strangle loses 2.3% of its value per day without movement. If the thesis was a dated catalyst, the position should not outlive that date by much.
Close both legs together
After a strong move, the winning leg is tempting to keep. Closing only the loser turns the strangle into a directional position with no stop — a different trade, and one nobody decided to take.
If price leaves the range early
A big move in the first week leaves the winning leg with plenty of time value intact. Closing there is usually right: what is left to gain depends on the move continuing, and what a reversal can give back is everything.
Do not roll it
Rolling a losing strangle inward to "bring the break-evens closer" is buying more premium on a thesis that has already failed once, and with less time left.
Common mistakes
Buying it because it is cheap
$954 looks small next to $2,435, and that is the wrong comparison. What matters is that the strangle needs a 5.1% move and the straddle 4.2%: you are buying a lower probability, not a bargain.
Strikes too far out
Lowering the cost by choosing very distant strikes reaches a point where the required move stops being plausible. A 540/620 strangle would be cheap and would need 8% in six weeks.
Holding it with no catalyst
Without a specific date to justify the move, theta turns the position into a slow, certain loss. It is the strategy that tolerates waiting worst.
Confusing it with a short strangle
The sold strangle is the opposite strategy: it collects the $954, profits if nothing happens and carries undefined risk on both sides. They share a name and nothing else.
Frequently asked questions
How much does a strangle cost on SPY?
Buying the 560 put and the 600 call with SPY at 580 and 45 days costs $954 per contract: $405 for the put and $549 for the call. That is 61% less than the at-the-money straddle at $2,435.
How far does SPY have to move for a strangle to profit?
Below 550.46 or above 609.54 — more than 5.1% from 580. The equivalent straddle needs 4.2%: the strangle risks 61% less and demands 21% more movement.
What is the difference between a straddle and a strangle?
The straddle buys the call and put at the same at-the-money strike; the strangle buys them apart, out of the money. The strangle costs far less and demands a larger move, and it also loses 100% across the whole range between strikes — 40 points here — while the straddle only loses everything at one exact point.
What strikes should you pick for a strangle?
Between 0.20 and 0.30 delta on each side, which keeps the position symmetric in probability. In the example the 560 put is at −0.223 and the 600 call at +0.293; the gap comes from carry, which pushes the forward price above spot.
How much does a strangle lose per day?
$22.09 a day in the example, which on a $954 cost is 2.3% of capital per day. The straddle loses $27.00 on $2,435, or 1.1%. In dollars the strangle bleeds less; in percentage terms it bleeds twice as fast.
Can you sell a strangle?
Yes, and it is a very different strategy: you collect the $954, profit if SPY stays between 560 and 600, and the risk is undefined on both sides. It needs margin and active management. The defined-risk version of the same idea is the iron condor.