BTC vs ETH 30-day implied volatility
Compare annualized implied volatility on exactly matching daily observations.
Source: Binance and Bybit public APIs, recorded per-expiry hourly metrics. Matched daily observations at 08:00 UTC over the last 90 days; refresh every 2 minutes. IV is annualized percent.
30-day ATM implied volatility
annualized %- BTC 30d IV
- ETH 30d IV
ETH − BTC IV spread
vol points- ETH − BTC
ETH / BTC IV ratio
x- ETH / BTC
Each coin’s 30-day IV interpolates total variance between the nearest listed expiries on either side, without extrapolation. Only exact matching timestamps enter the comparison. Missing days break chart paths; there is no gap filling. Spread = 100 × (ETH IV − BTC IV); ratio = ETH IV / BTC IV. For example, 40% BTC and 60% ETH give +20 vol points and 1.50x. This is recorded venue coverage, not the entire options market or a trade recommendation.
Matched daily values · UTC
16 observations| Source time (UTC) | BTC 30d IV | ETH 30d IV | ETH − BTC (vol points) | ETH / BTC (x) |
|---|---|---|---|---|
| 2026-10-16 08:00 | 35.7% | 48.0% | +12.3 | 1.34x |
| 2026-10-15 08:00 | 36.3% | 49.2% | +12.9 | 1.36x |
| 2026-10-14 08:00 | 36.0% | 48.3% | +12.3 | 1.34x |
| 2026-10-13 08:00 | 35.5% | 48.1% | +12.6 | 1.35x |
| 2026-10-12 08:00 | 36.1% | 47.7% | +11.6 | 1.32x |
| 2026-10-11 08:00 | 35.4% | 48.7% | +13.3 | 1.37x |
| 2026-10-10 08:00 | 35.2% | 48.6% | +13.4 | 1.38x |
| 2026-10-09 08:00 | 34.7% | 48.6% | +13.9 | 1.40x |
| 2026-10-07 08:00 | 34.9% | 46.3% | +11.4 | 1.33x |
| 2026-10-06 08:00 | 34.6% | 47.4% | +12.8 | 1.37x |
| 2026-10-05 08:00 | 34.7% | 47.8% | +13.2 | 1.38x |
| 2026-10-04 08:00 | 34.3% | 46.9% | +12.6 | 1.37x |
| 2026-10-03 08:00 | 33.5% | 45.9% | +12.3 | 1.37x |
| 2026-10-02 08:00 | 33.9% | 47.8% | +13.9 | 1.41x |
| 2026-10-01 08:00 | 34.0% | 47.9% | +13.9 | 1.41x |
| 2026-09-30 08:00 | 34.3% | 48.1% | +13.8 | 1.40x |