Setup: buy the 0.20–0.30 delta call and the 0.20–0.30 delta put, 30–60 DTE. Typical cost is 50–70% of an equivalent straddle. The trade-off: the underlying needs to move further before either leg starts to print. On a $100 stock at $100, a strangle with $95 puts and $105 calls breaks even outside that range plus the premium paid — typically a 7–12% move on the underlying.
When the strangle wins: explosive moves where one leg goes deep ITM. When it loses: moderate moves that aren't large enough to overcome both legs' premium plus IV decay. The structure pays off in fat-tailed environments — earnings on volatile names, biotech catalysts, geopolitical surprises. In quiet IV regimes, the strangle is a slow bleed even when the directional thesis looks reasonable.