Bitcoin (BTC) constant-maturity IV history
Compare 7, 30 and 90-day at-the-money implied volatility through time, and the slope between the long and short tenors.
Source: Binance and Bybit public APIs, recorded per-expiry hourly metrics. Daily observations at 08:00 UTC over the last 90 days; refresh every 10 minutes. IV is annualized percent. The slope is in volatility points.
7, 30 and 90-day ATM implied volatility
- 7-day ATM IV
- 30-day ATM IV
- 90-day ATM IV
90d − 7d slope
vol points · backwardation below 0- 90d − 7d (vol points)
Each tenor interpolates total variance between that hour’s nearest listed expiries on either side. There is no extrapolation or gap filling. Positive slope means longer-dated IV is higher; backwardation is below zero. Missing observations break the chart lines. This is recorded venue data, not the whole options market or a trade recommendation.
Daily values · 08:00 UTC
| Date (UTC) | 7d ATM IV | 30d ATM IV | 90d ATM IV | 90d − 7d (vol points) |
|---|---|---|---|---|
| 2026-10-16 | 29.8% | 35.7% | 37.0% | +7.2 |
| 2026-10-15 | 32.8% | 36.3% | 38.1% | +5.3 |
| 2026-10-14 | 32.5% | 36.0% | 37.8% | +5.2 |
| 2026-10-13 | 32.4% | 35.5% | 37.4% | +5.0 |
| 2026-10-12 | 32.5% | 36.1% | 37.3% | +4.8 |
| 2026-10-11 | 31.3% | 35.4% | 37.3% | +5.9 |
| 2026-10-10 | 29.8% | 35.2% | 37.1% | +7.3 |
| 2026-10-09 | 32.3% | 34.7% | 37.1% | +4.9 |
| 2026-10-07 | 31.3% | 34.9% | 36.9% | +5.6 |
| 2026-10-06 | 31.8% | 34.6% | 36.7% | +4.9 |
| 2026-10-05 | 34.1% | 34.7% | 36.5% | +2.4 |
| 2026-10-04 | 30.8% | 34.3% | 36.8% | +5.9 |
| 2026-10-03 | 27.9% | 33.5% | 36.6% | +8.6 |
| 2026-10-02 | 31.3% | 33.9% | 36.8% | +5.5 |
| 2026-10-01 | 31.8% | 34.0% | 36.9% | +5.1 |
| 2026-09-30 | 32.8% | 34.3% | 37.3% | +4.5 |
A dash means listed expiries did not bracket that tenor or had no usable mark IV. Constant-maturity risk reversal history is unavailable because the historical summaries do not store separate 25-delta call and put IVs.