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Long Straddle & Strangle

advanced7 min read

Betting on a big move in either direction — perfect around earnings, brutal if nothing happens.

The long straddleBuying a call and put at the same strike to trade volatility./strangleA cheaper volatility bet using out-of-the-money options. is the opposite of the short version: you buy a callThe right, not the obligation, to buy or sell at a set price. AND a putThe right, not the obligation, to buy or sell at a set price. (same strikeThe fixed price at which an option can be exercised. = straddleBuying a call and put at the same strike to trade volatility., OTMWhere an option’s strike sits relative to the current price. strikes = strangleA cheaper volatility bet using out-of-the-money options.). You make money if the underlying makes a big move in either direction, and you don’t care which way.

A long straddleBuying a call and put at the same strike to trade volatility. is a pure **bet on volatilityThe size of price swings — not their direction., not direction* — you profit from a big move either way and lose if the stock sits still. That makes it the natural play for binary events (earnings, results, a verdict) where you’re confident something dramatic* willArranging how your wealth passes on after death. happen but not which way. But there’s a brutal catch that traps beginners: you’re paying two premiums and fighting double theta, and these positions are *long vegaHow much an option’s price changes when volatility changes.* — so if you buy right before earnings when IVThe market’s forecast of future movement, baked into option prices. is already sky-high, the post-event **volatilityThe size of price swings — not their direction. crush* can vaporise your value even if the stock moves. You can be right that it’ll be volatile and still lose, because everyone else expected volatility too and you overpaid. Buy straddles when the expected move is bigger than the (priced-in) implied move — i.e. when volatility is underpriced*, not when it’s already screaming.
ExampleBefore results, a stock at ₹1,000 has an ATMWhere an option’s strike sits relative to the current price. straddleBuying a call and put at the same strike to trade volatility. costing ₹100 (₹55 callThe right, not the obligation, to buy or sell at a set price. + ₹45 putThe right, not the obligation, to buy or sell at a set price.). You profit only if it moves beyond ₹1,100 or below ₹900. It jumps to ₹1,070 — a real move, but not enough, and with IVThe market’s forecast of future movement, baked into option prices. crushing post-results, the straddleBuying a call and put at the same strike to trade volatility. is worth less than ₹100. Right about volatilityThe size of price swings — not their direction., still a loss: the move was smaller than the priced-in expectation.
Common mistakeBuying straddles right before earnings because “it’ll move big.” The market already knows earnings are coming and has inflated IVThe market’s forecast of future movement, baked into option prices. (and the straddleBuying a call and put at the same strike to trade volatility. price) to price in the expected move. Unless the actual move exceeds that priced-in expectation, the volatilityThe size of price swings — not their direction. crush beats you. You need volatilityThe size of price swings — not their direction. to be underpriced, not just high.
Key takeawayA long straddleBuying a call and put at the same strike to trade volatility./strangleA cheaper volatility bet using out-of-the-money options. buys a callThe right, not the obligation, to buy or sell at a set price. + putThe right, not the obligation, to buy or sell at a set price. to profit from a big move either way (a bet on volatilityThe size of price swings — not their direction., not direction) — ideal for binary events. But you pay double premium/theta and are long vegaHow much an option’s price changes when volatility changes., so a post-event volatilityThe size of price swings — not their direction. crush can lose money despite a move. Buy only when the expected move exceeds the priced-in (implied) move.
FAQs
Straddle vs strangle for an event?

A straddle (ATM) costs more but profits on a smaller move; a strangle (OTM) is cheaper but needs a *bigger* move to pay off. Strangles suit very large expected moves on a tight budget; straddles suit moderate-but-certain moves. Either way, the key question is whether the actual move will beat the implied (priced-in) move.