Straddles & Strangles

Every strategy so far expressed a view about direction, bullish or bearish. Straddles and strangles are different: they bet on the size of a move rather than its direction. These volatility strategies profit when an asset makes a large move either way, and they are what traders reach for when they expect something big to happen but do not know which way it will break.

The long straddle

A long straddle buys both a call and a put on the same underlying, with the same strike (usually at-the-money) and the same expiration. The call profits if the price rises sharply, and the put profits if it falls sharply, so the straddle makes money from a large move in either direction. What it cannot tolerate is the price staying flat: if the underlying barely moves, both options decay and you lose both premiums. A straddle is a pure bet on volatility, on a large move happening, regardless of direction.

The long strangle

A long strangle is a close cousin that buys a call and a put with the same expiration but different, out-of-the-money strikes, the call above the current price and the put below it. Because both options are out-of-the-money, a strangle is cheaper to establish than a straddle. The trade-off is that the underlying must make a larger move to reach profit, since the price has further to travel before either option pays off. A strangle is a lower-cost, lower-probability version of the same large-move bet.

When to use them, and the volatility trap

These strategies suit situations where you expect a significant move but are unsure of the direction, classically ahead of a scheduled event like an earnings announcement. You do not predict the direction, only that the move will be large. But here is a danger that ties back to implied volatility. Before a known event, implied volatility is typically high because everyone expects a big move, so the straddle or strangle is expensive. After the event, uncertainty resolves and implied volatility often collapses, a volatility crush. That collapse, working against the long position's vega, can make the straddle lose value even if the stock does move, because the move may not overcome both the rich premium paid and the drop in volatility. You can be right that the stock moves and still lose because you overpaid.

A straddle bets that something big happens without caring what. The danger is that nothing happens, and time decay quietly bleeds both options dry.

The short side and the warning

The opposite positions, short straddles and short strangles, are created by selling rather than buying both options, and they profit when the underlying stays within a narrow range, collecting both premiums as the options decay. But these short positions carry large and potentially unlimited risk, because a big move in either direction produces severe losses, exactly the dangerous asymmetry of option selling. Selling volatility can earn steady premiums in calm markets while exposing the seller to catastrophic losses when a large move arrives, the negative-skew, fat-tail risk from Units 5 and 6. This is why selling naked volatility is among the riskiest things you can do in trading, a danger the risk-management lesson covers directly.

Straddles buy volatility with unlimited-loss risk on the short side. The next lesson shows how to sell volatility with defined risk instead: the iron condor.