Risk Reversal
A Risk Reversal is an options strategy that combines selling an out-of-the-money put and buying an out-of-the-money call (or vice versa) on the same underlying and expiration, creating a position with directional exposure and minimal initial premium outlay.
The risk reversal is perhaps the most common options structure used in professional foreign exchange and equity derivatives markets. In its long form, the trader sells an out-of-the-money put to fund the purchase of an out-of-the-money call, establishing a bullish position with limited net premium spent. In its short form, the trader sells the call and buys the put, creating a bearish position.
The appeal of the risk reversal lies in its cost efficiency. Since one side is financed by the other, the net premium can be close to zero — sometimes referred to as a zero-cost collar when the strikes are chosen so premiums perfectly offset. This allows traders to express a directional view without a large upfront investment, making risk reversals popular for speculative positioning ahead of earnings or macroeconomic events.
In FX markets, the risk reversal is also used as a measure of market sentiment and skew. Dealers quote the risk reversal as the difference in implied volatility between an out-of-the-money call and an out-of-the-money put of similar delta. A positive risk reversal (calls more expensive than puts) signals bullish market sentiment, while a negative risk reversal signals fear or bearish positioning.
For equity options, risk reversals are frequently embedded in corporate hedging programs. A company holding foreign currency revenues might buy a put to protect against a depreciating dollar while selling a call to cap upside participation — funding the put hedge with the call premium.
The risk profile of a long risk reversal is similar to a synthetic long stock between the two strikes, transitioning to a capped short put loss below the put strike and unlimited call gains above the call strike. The position has a gap in the middle where neither option is in the money, providing a range of neutral exposure.
Implied volatility skew heavily influences risk reversal pricing. When equity markets are fearful, put skew elevates put prices relative to calls. A trader buying a risk reversal in this environment sells expensive puts and buys cheap calls, which is a favorable setup if the feared scenario does not materialize.