According to BlockBeats, on November 24, the BitVol index launched by T3 Index and LedgerX fell to 66.32, a single-day drop of 0.29%. The BitVol index measures the 30-day expected implied volatility derived from Bitcoin option prices. Implied volatility is calculated using the B-S option pricing formula. Implied volatility represents market participants' views and expectations of the future market and is considered to be the closest to the actual volatility at the time.