Grayscale Bitcoin Trust ETF (GBTC)

Last Closing Price: 63.11 (2026-10-08)

Implied Volatility (Puts) (180-Day)

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

Grayscale Bitcoin Trust ETF (GBTC) had 180-Day Implied Volatility (Puts) of 0.4014 for 2026-10-08.