Triple-digit annualized volatility used to be normal for Bitcoin. Rolling 30-day and 90-day readings have both trended down meaningfully since those earliest, thinly-traded years — a real, measured compression, not a vibe — though today's calmer range still sits well above what's typical for equities or bonds.
How volatility is measured here
This site computes rolling annualized volatility — the standard deviation of daily returns over a trailing window (30 days and 90 days), scaled to an annualized figure the way most financial volatility metrics are conventionally expressed. Higher readings mean price has been swinging more dramatically day to day; lower readings mean calmer, more range-bound trading.
The real compression pattern
Looking at the full history, both the 30-day and 90-day measures have trended meaningfully lower since Bitcoin's earliest, thinly-traded years, when annualized volatility readings in the triple digits were common. That's a real, measured pattern — not an opinion — consistent with a market that has grown deeper, more liquid, and populated by a more diverse set of participants (long-term holders, institutions, market makers) than its early speculative-retail-only days.
Why "less volatile" still means "quite volatile"
Even at its most compressed, Bitcoin's volatility has typically remained well above what's normal for major equity indices or investment-grade bonds. The "maturing asset" narrative built on this compression trend is a real, data-backed observation about direction — it does not mean Bitcoin has become a low-volatility asset in any absolute sense, and sharp volatility spikes still occur around major news events, liquidations, or macro shocks.