The BitVol index, launched by financial index company T3 Index in partnership with Bitcoin options trading platform LedgerX, fell to 58.17 yesterday, a daily drop of 3.9%, hitting a nearly two-month low.
Note: The BitVol index measures the expected implied volatility derived from tradable Bitcoin option prices over 30 days. Implied volatility refers to the volatility implied by the actual option price. It is calculated using the B-S option pricing formula, substituting all parameters except for volatility σ into the formula.
The actual price of an option is formed through competition among many options traders. Therefore, implied volatility represents market participants' views and expectations about future market conditions and is considered to be closest to real-time volatility at that time.