Long and Short Strangles for Trading Expected Volatility
Summary
A strangle combines a call and a put on the same asset with the same expiry and different out-of-the-money strikes. A long strangle buys both options, risking the premiums paid while seeking a sufficiently large move in either direction. A short strangle sells both options to collect premiums when the underlying is expected to stay within a range; the article notes that losses can become very large if the price moves beyond that range. It illustrates both approaches with a Bitcoin example tied to uncertainty around a spot ETF decision.
The discussion emphasizes implied volatility, catalysts, strike selection, expiry, and time decay. It contrasts strangles with straddles, which use the same strike for the call and put and generally cost more to buy, while needing a smaller move to become profitable. The examples are illustrative rather than evidence of strategy performance. Outcomes depend on option prices, volatility changes, timing, and transaction costs, and the article’s characterization of strangles as low risk should be treated cautiously, especially for short positions.
Key ideas
- A long strangle buys an out-of-the-money call and put with a shared expiry, seeking a large move either way.
- The premium paid for a long strangle defines its initial maximum loss, while gains require enough movement to overcome costs.
- A short strangle collects premium but can incur very large losses if the underlying price leaves the expected range.
- Implied volatility, catalyst timing, strike selection, expiry, and theta decay affect the trade.
- A straddle uses the same strike for both options and typically costs more than an out-of-the-money strangle.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.