Grayscale Bitcoin Mini Trust ETF (BTC) Implied Volatility
Grayscale Bitcoin Mini Trust ETF (BTC) options trade at a 30-day at-the-money implied volatility of 40.3%, an IV rank of 31 out of 100 over the past year. This page breaks down BTC's implied volatility in plain English: where it sits versus its own history, how it compares with realized movement, and what the term structure and skew are saying.
Data as of Aug 24, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Implied Volatility & Expected Move
BTC 30-day at-the-money implied volatility, past year.
| ATM IV — front expiration | 40.3% |
| ATM IV — 2 month | 45.2% |
| IV rank (1 year) | 31 / 100 |
| IV percentile (1 year) | 48% |
| Expected move (front expiration) | ±$3.67 (±10.5%) |
| Historical volatility — 10 day | 49.4% |
| Historical volatility — 21 day | 39.6% |
| Historical volatility — 30 day | 37.6% |
| Historical volatility — 60 day | 42.6% |
| IV / HV ratio | 1.07 |
| Term slope (front − 3M) | -4.9 pts |
An IV rank of 31 places current implied volatility in the lower part of its 52-week range. An IV/HV ratio of 1.07 means implied volatility is roughly in line with recent realized volatility. The term structure is in contango — front-month IV sits below 3-month IV, the typical shape in calm markets.
BTC IV Rank History
BTC IV rank (0–100), past year.
IV rank has fallen from 39 in Feb '26 to 31 today. An IV percentile of 48% means implied volatility was lower than today on 48% of trading days in the past year.
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BTC Options FAQ
What is the implied volatility of BTC options?
BTC options trade at a 30-day at-the-money implied volatility of 40.3% as of Aug 24, 2026. That is an IV rank of 31 out of 100, meaning implied volatility is subdued relative to its own 52-week range.
Is BTC implied volatility high or low right now?
By its own 52-week standards, BTC implied volatility is currently low: IV rank is 31 out of 100 as of Aug 24, 2026. Compared with realized movement, the IV/HV ratio of 1.07 shows options pricing more movement than the stock has recently delivered.
What move do BTC options imply before the next expiration?
Front-expiration BTC options imply a one-standard-deviation move of ±$3.67 (±10.5%) as of Aug 24, 2026, derived from at-the-money option prices.
What is the difference between BTC's IV rank and IV percentile?
IV rank (currently 31) measures where today's implied volatility sits between its 52-week low and high. IV percentile (currently 48%) counts the share of trading days in the past year with lower implied volatility than today. Percentile is less distorted by one-off volatility spikes.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.