Grayscale Bitcoin Trust ETF (GBTC)

Last Closing Price: 83.26 (2025-05-29)

Implied Volatility (Calls) (90-Day)

Implied Volatility (Calls): The forecasted future volatility of the security over the selected time frame, derived from the pricing of the at-the-money call options with the relevant expiration date.

Grayscale Bitcoin Trust ETF (GBTC) had 90-Day Implied Volatility (Calls) of 0.4997 for 2025-05-28.