What is DVOL, Bitcoin's implied volatility index?

What it measures

DVOL is Deribit's 30-day implied volatility index for Bitcoin — effectively BTC's VIX. It is derived from option prices and expresses the market's priced expectation of annualized movement over the next month. A DVOL of 36 implies roughly ±1.9% typical daily moves (36 ÷ √365).

How to read it

Because volatility clusters, the percentile vs its own recent history matters more than the absolute number. Low percentiles mean options are cheap and the market is calm (sometimes complacent — large moves often start from vol floors). High percentiles mean fear or event premium is being paid.

We headline the trailing one-year percentile. The DVOL series starts in March 2021, and its first two years are regimes this market no longer trades in — a 2021 median near 90 and a 2022 median near 73, against roughly 43 in 2026. Scored against all of that, a perfectly ordinary reading today lands in the single digits and reads as historic calm when it is nothing of the sort. The full-history figure is still published beneath the headline, as context rather than as the verdict.

Caveats

Implied vol is a price of risk, not a direction forecast — high DVOL says the market expects movement, not which way. Low-vol regimes can persist far longer than intuition suggests. And the percentile is only ever as meaningful as its window: a one-year lookback tracks the current regime but cannot tell you the regime itself has shifted, which is exactly what the full-history number beneath it is for.