Bitcoin Volatility Analysis: 1.07% vs 90-Day Baseline (May 2026)

BTC’s 30-day realized volatility is 1.07%, a 0.47 percentage-point drop versus the prior 90-day average of 1.54%, marking the latest month as a distinct lower-volatility regime.

That calmer backdrop did not come with a directional move, as BTC closed at 77,278 USD, down 0.95% over 30 days and still inside the month’s 75,441-81,600 USD range.

Analytically, this reads as a BTC-led compression phase: market share held up while price stayed contained, so the key question is whether this quieter structure persists or moves back toward the earlier 90-day baseline.

Why the 30-day vol break matters

BTC’s 30-day realized volatility came in at 1.07%, which sits 0.47 percentage points below the prior 90-day average of 1.54%. That gap is wide enough to treat the latest month as a separate volatility environment, not just a small drift around the same baseline.

Price action matched that calmer profile. BTC closed at 77,278 USD after trading between 75,441 USD and 81,600 USD across the month, keeping the entire lower-volatility phase inside a relatively tight band.

In plain terms, BTC moved less from day to day even though it still covered a visible range. Structurally, that points to compression: activity stayed contained instead of turning into a fresh directional phase.

What the yearly chart says about regime separation

The yearly view strengthens the case that this was a genuine regime break. The 30-day window sat 1.68 standard deviations away from the prior 90-day volatility baseline, which places the latest month well outside ordinary noise.

That separation was also consistent across the sample. BTC spent 100.0% of the last 30 days below the prior 90-day average volatility, while the preceding 90-day window had only 4.4% of days above that same average.

Put simply, the recent month was calmer on every day in the sample, not just on average. For market structure, that matters because it suggests the drop in realized volatility was broad and persistent, not the result of one or two unusually quiet sessions.

Did price and volatility diverge?

BTC returned -0.95% over 30 days while realized volatility fell to 1.07%. That means the market became quieter without producing an upward price trend.

The distinction matters because a compressed month with little net price progress is analytically different from a month where volatility falls as price steadily advances. Here, the lower-volatility regime did not translate into directional displacement by the close.

The highest-volume day in the 30-day sample was 46.58B USD on 2026-05-05, when BTC traded at 81,008 USD. That places the strongest participation around the mid-month advance rather than at the final monthly close, which reinforces the idea of contained movement instead of a sustained breakout phase.

BTC dominance held above its 90-day center

BTC dominance finished at 59.71%, which is 1.47 percentage points above its 90-day median of 58.91%. Over the same 90-day window, the range ran from 57.41% to 60.24%.

That leaves the latest reading in the upper half of the recent band, but still short of a new structural extreme. In plain terms, BTC kept a firm share of market cap even as its own price volatility cooled.

Structurally, that supports a BTC-led reading of the current regime. The market was not rotating away from BTC during the volatility break; BTC remained relatively central while price action stayed compressed.

Why ETH/BTC still points to BTC-led structure

The ETH/BTC ratio finished at 0.027325, down 18.34% over 180 days. Across that same period, the ratio ranged from a high of 0.036153 to a low of 0.027319.

The latest reading sits near the bottom of that 180-day range, which means ETH has continued to lag BTC across the broader window. In plain language, the backdrop does not look like a broad large-cap rotation into ETH.

That context matters for interpreting BTC’s volatility break. If ETH/BTC were recovering sharply, the lower-volatility month could be read as part of a wider leadership handoff, but the ratio instead keeps the focus on BTC-specific market structure.

How broad was the altcoin response?

The top-10 movers snapshot showed a 30-day spread of 125.78 percentage points, running from NEAR at +103.68% to BCH at -22.1%. At the same time, the median top-100 mover was just 0.03%.

That is a very uneven breadth picture. A market with that kind of dispersion is not moving as one block, even if a handful of names are posting large gains or losses.

In plain terms, altcoin action was driven by single-name moves rather than a uniform risk-on or risk-off swing. Structurally, that fits the broader compression story around BTC: calm at the index level coexisted with sharp idiosyncratic movement underneath the surface.

What the monthly close says about conviction

BTC recorded 0 daily moves above 3% and 0 daily moves above 5% in the 30-day sample. That is a straightforward sign that the month lacked large directional bursts.

The latest close was 77,278 USD, after trading between 75,441 USD and 81,600 USD during the period. The final state was therefore range retention, not a move that carried price beyond the month’s established boundaries.

In plain language, the market stayed calm and contained all the way into the close. Structurally, the volatility break happened without the kind of price displacement that would reset the broader directional picture.

Bottom line

The clearest takeaway is that BTC’s last 30 days formed a lower-volatility regime that separated from the earlier 90-day environment, but that separation did not come with a directional price breakout. The combination of a 1.07% realized-volatility reading, a -0.95% 30-day return, and a monthly close inside the established range points to compression, not displacement.

BTC dominance near 60% and an ETH/BTC ratio near the lower end of its 180-day range keep that interpretation BTC-led. The next update matters mainly for whether volatility stays below the 90-day baseline or starts moving back toward it.

What would change this view

Several developments would weaken the current reading.

• BTC realized volatility jumps back above the prior 90-day average of 1.54% while price leaves the 75,441-81,600 USD band — that would turn the month into a temporary pause, not a regime break.
• BTC dominance falls back below 58.91% and ETH/BTC reclaims materially above 0.027325 in the same week — that would weaken the BTC-led interpretation and point toward rotation.
• A renewed cluster of >3% daily BTC moves appears alongside a wider move in top-100 movers — that would indicate the market has left compression and re-entered expansion.

What to watch next

• BTC vol vs 1.54% 90-day baseline
• BTC dominance near 60% or back to median
• ETH/BTC staying near 0.0273

Frequently asked questions

Is bitcoin volatility analysis showing a high or low regime?

Bitcoin volatility analysis shows a low regime: BTC’s 30-day realized volatility is 1.07%, versus a 1.54% prior 90-day average. The 30-day window also sat 1.68 standard deviations away from that baseline, which is more than a routine wobble. That combination points to a distinct compression regime.

What does bitcoin volatility analysis signal in this context?

In this bitcoin volatility analysis, the signal is compression without displacement. BTC fell 0.95% over 30 days while realized volatility dropped to 1.07%, and no daily move exceeded 3%. That means the market got calmer without producing a directional trend, which is a different structure from a breakout month.

How is bitcoin volatility analysis calculated here?

This bitcoin volatility analysis uses the 30-day realized volatility series from daily closes, then compares it with the prior 90-day volatility baseline on the yearly chart. The article also checks how many days in the last 30 sat below that baseline and how far the regime sits in standard-deviation terms.

When does the bitcoin volatility analysis regime change?

The bitcoin volatility analysis regime changes if BTC volatility moves back above the 1.54% prior 90-day average and price exits the 75,441-81,600 USD band with broader participation. That would shift the read from compression to expansion. Until then, the market structure remains a low-volatility BTC-led regime.

Is BTC dominance high or low in bitcoin volatility analysis?

BTC dominance in this bitcoin volatility analysis is elevated, not extreme: it ended at 59.71%, above the 90-day median of 58.91% and inside a 57.41%-60.24% range. That supports BTC-led structure during the volatility break, but it is still below a decisive dominance breakout.