Volatility skew measurement refers to the analysis of the implied volatility of options across different strike prices for the same expiration date, which typically forms a non-flat curve. Instead of being uniform, implied volatility often exhibits a “skew” or “smile” pattern, where out-of-the-money puts have higher implied volatility than out-of-the-money calls. This pattern reflects market participants’ perception of tail risks.
Measurement
Measuring volatility skew involves plotting the implied volatilities of options against their strike prices. The slope and shape of this curve provide insights into market sentiment regarding future price movements and potential crashes. For instance, a steep “smirk” in traditional equity options indicates a strong demand for downside protection. In cryptocurrency options, the skew can be particularly pronounced due to the frequent occurrence of extreme price events.
Implication
The implication of volatility skew for options traders is significant, as it directly affects the pricing of different strike options. Traders must incorporate this non-flat volatility structure into their pricing models and strategy selection. Strategies like vertical spreads or butterfly spreads are directly impacted by the shape of the skew. Understanding and accurately measuring the skew is crucial for identifying mispricings and managing portfolio risk in derivative markets.
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