Implied Volatility

What is Implied Volatility?

Implied volatility is a metric derived from option prices that represents the market's expectation of future price volatility. Unlike historical volatility, which measures past price movements, implied volatility is forward-looking, reflecting what traders expect will happen. Higher implied volatility means options are more expensive.

How Implied Volatility Works

Implied volatility is calculated by working backward from option prices. Given the market price of an option and its other parameters including strike, expiration, and underlying price, the volatility input needed to produce that price is the implied volatility.

If traders expect large price swings, they pay more for options, driving up implied volatility. If calm markets are expected, options become cheaper, and implied volatility falls.

Implied Volatility and Option Pricing

Implied volatility is a primary driver of option premiums. Higher implied volatility means higher premiums for both calls and puts. This relationship means option buyers pay more during uncertain times when protection is most wanted.

The sensitivity of option price to implied volatility changes is measured by vega. At-the-money options have the highest vega, making their prices most responsive to implied volatility changes.

IV Patterns in Crypto

Crypto markets tend to have higher baseline implied volatility than traditional markets due to inherently higher volatility. BTC implied volatility typically ranges from 40% to 150% annualized, compared to 15-30% for major stock indices.

Implied volatility spikes during market stress, crashes, and major events. It tends to fall during periods of consolidation and low trading activity.

Volatility Skew

Implied volatility often differs across strikes, creating a volatility skew. In crypto, puts often have higher implied volatility than calls of the same distance from at-the-money, reflecting demand for downside protection. This skew provides information about market sentiment and expected risk distribution.

Trading Implied Volatility

Traders can take positions on implied volatility itself, not just price direction. Long volatility positions through buying options profit when realized volatility exceeds implied volatility. Short volatility positions through selling options profit when realized volatility is lower than implied volatility.