Strangle (Options Strategy): Betting on a Big Move Without Picking a Direction
A strangle is an options strategy where a trader buys (or sells) an out-of-the-money call and an out-of-the-money put on the same underlying asset, with the same expiry date but different strike prices. It profits when the underlying makes a large move in either direction, without requiring the trader to predict which way the move will go.
Not financial advice. All figures for educational reference only. Data as at October 2026.
Last updated: October 2026
Key Takeaways
- A strangle combines an out-of-the-money (OTM) call and an OTM put on the same underlying and expiry, but at different strike prices.
- A long strangle profits from a large price move in either direction and has limited, defined risk equal to the total premium paid.
- A short strangle collects premium upfront and profits if the underlying stays range-bound, but carries theoretically unlimited risk on the upside.
- Because both legs are OTM, a strangle costs less upfront than a straddle with the same expiry — but it also needs a bigger move to become profitable.
- Singapore-based retail investors typically trade strangles on US-listed stocks or indices via brokers like Interactive Brokers, Tiger Brokers, or moomoo, since SGX has limited single-stock options liquidity.
What Is Strangle (Options Strategy)?
A strangle is a volatility-based options strategy, which means the trader is making a bet on how much the underlying price will move, rather than on its direction. The strategy involves two legs: buying (or selling) a call option with a strike price above the current market price, and buying (or selling) a put option with a strike price below the current market price. Both options share the same underlying asset and expiry date.
The strangle is a close cousin of the straddle, but where a straddle uses at-the-money strikes for both legs, a strangle deliberately uses out-of-the-money strikes. This makes a strangle cheaper to set up than an equivalent straddle, because OTM options carry less intrinsic value and lower premiums. The trade-off is that the underlying needs to move further before the position turns profitable, since both legs start further from the current price.
Singapore investors who are new to options often encounter the strangle when researching how to position around binary events — a company earnings release, a US Federal Reserve rate decision, or a major economic data print — where the direction of the move is uncertain but a large move is expected. Because the strategy does not require calling the direction correctly, it is popular among traders who want “event volatility” exposure without taking a directional view.
How Does It Work in Singapore?
Strangles are rarely traded on SGX-listed single stocks because liquidity in Singapore-listed options is thin outside of a handful of blue chips, and bid-ask spreads can be wide enough to erode most of the strategy’s edge. In practice, most Singapore retail traders who run strangle strategies do so on US-listed names (e.g. large-cap tech stocks) or on US index options (SPX, QQQ) through brokers that offer US options access, such as Interactive Brokers, Tiger Brokers, moomoo, or Saxo Markets.
Because the underlying is usually USD-denominated, Singapore traders also need to account for currency conversion costs and the SGD/USD exchange rate when sizing a position and calculating breakeven points in SGD terms. A trade that looks profitable in USD can look less attractive once converted back, especially if the SGD has strengthened during the holding period.
| Factor | Long Strangle | Short Strangle |
|---|---|---|
| Who pays premium | Trader pays premium upfront | Trader receives premium upfront |
| Max loss | Limited to premium paid | Theoretically unlimited (upside) / large (downside) |
| Max gain | Theoretically unlimited | Limited to premium received |
| Ideal market view | Expects a big move, unsure of direction | Expects the underlying to stay range-bound |
Source: Options mechanics, generic — always confirm margin requirements with your broker.
Strangle (Options Strategy) Example
Suppose a Singapore-based trader is watching a US tech stock trading at USD 100 ahead of its quarterly earnings report. Unsure whether the results will beat or miss expectations, but confident the stock will move sharply either way, the trader sets up a long strangle:
Buy 1 call option, strike USD 105, expiring in 2 weeks, for a premium of USD 2.00 (USD 200 per contract, 100 shares per contract).
Buy 1 put option, strike USD 95, expiring in 2 weeks, for a premium of USD 1.80 (USD 180 per contract).
Total cost: USD 380 (excluding commissions). At an SGD/USD rate of 1.34, this is roughly SGD 509.
The position breaks even if the stock closes above USD 108.80 (upper strike plus total premium) or below USD 91.20 (lower strike minus total premium) by expiry. If the stock reports strong earnings and jumps to USD 115, the call is worth at least USD 10 (USD 1,000 per contract), for a profit of roughly USD 620 before the put (now worthless) is accounted for — minus commissions. If the stock barely moves and stays between USD 95 and USD 105 through expiry, both options expire worthless and the trader loses the full USD 380 premium.
Advantages
No directional call needed. A strangle profits whether the underlying rallies or falls sharply, which suits traders who expect volatility but can’t predict direction — such as around earnings or major economic announcements.
Lower upfront cost than a straddle. Because both legs use out-of-the-money strikes, the combined premium is typically cheaper than an at-the-money straddle on the same underlying and expiry.
Defined, known risk for the long strangle. A trader who buys a strangle knows the maximum possible loss (the total premium paid) the moment the position is opened.
Flexible strike selection. Traders can widen or narrow the strikes to fine-tune the cost and the size of the move needed to profit, depending on their conviction about the magnitude of movement.
Risks and Limitations
Needs a bigger move than a straddle. Because both legs start out-of-the-money, the underlying must move further before the long strangle becomes profitable — a moderate move may not be enough to offset the premium paid.
Time decay works against the long strangle. Options lose value as expiry approaches (theta decay), so if the expected move doesn’t happen quickly, the position can lose value even if the stock eventually moves in the “right” direction after expiry.
Short strangles carry very large downside risk. A trader who sells a strangle to collect premium is exposed to theoretically unlimited losses if the underlying makes an extreme move against the position — a risk that has wiped out undisciplined traders in volatile markets.
Implied volatility crush. After a known event like earnings, implied volatility often collapses even if the stock moves, which can reduce the value of both legs and eat into profits that would otherwise have been larger.
Currency risk for SG-based traders. Since most SG-accessible underlyings are USD-denominated, SGD/USD fluctuations can add or subtract from the reported profit or loss once converted home.
The Bottom Line
For Singapore investors, a strangle is a way to position for a large price move without picking a direction — it costs less than a straddle but needs a bigger move to pay off, and traders should be clear-eyed about the risk of time decay eating the position while waiting for that move to happen.