The at-the-money implied volatility for Grayscale Bitcoin Trust ETF (GBTC) options expiring Jan 21, 2028 (434 DTE) is 44.8%.
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Implied Volatility Stats
Showing results for 2028-01-21(m), calls & puts
| Expiration Date | Avg IV |
|---|---|
| 2028-01-21(m) calls | 45.76% |
| 2028-01-21(m) puts | 45.65% |
GBTC Volatility Skew FAQ
What is volatility skew?
Volatility skew is the difference in implied volatility between options at different strike prices. A steeper skew means traders are paying more for options on one side, usually downside puts used as protection.
What is GBTC's one-year implied volatility range?
Over the past year, GBTC 30-day implied volatility ranged from 30.6% on Aug 12, 2026 to 90.0% on Feb 5, 2026.
How has GBTC implied volatility changed recently?
GBTC 30-day implied volatility went from 37.9% on Oct 14, 2026 to 40.2% on Nov 11, 2026. See the GBTC implied volatility history for a longer view.
Related Charts
IV History
Track implied volatility changes over time