At press time, the ETH-BTC DVOL spread stood at -2.5, having hit a three-year low of -7.8 last week, according to data source Amberdata. Implied volatility, or IV, represents traders’ expectations for price turbulence over a specific period and is positively impacted by the demand for options. A call option represents a bullish bet on the underlying asset, while a put represents a bearish bet.