Bitcoin dominance is Bitcoin’s share of total crypto market cap. When it rises, capital is concentrating in BTC. When it falls, alts are taking a larger slice.
Market share
Share is mixed between Bitcoin and the rest
59.0%
Bitcoin as a percent of total crypto market capitalization
Bitcoin
59.0%
+0.10%
Ethereum
11.4%
+0.06%
Others
29.6%
Alts + stables
Hover or drag across the chart. A rising line means BTC is gaining share versus the rest of crypto.
Thu, 10 Sept 2026
59.0%
| Dominance history | Value |
|---|---|
| 90-day average | 58.7% |
| 1-year average | 58.8% |
| History high | 72.4% |
| History low | 37.8% |
| Days above 60% (1Y) | 29 |
| Days above 50% (1Y) | 364 |
| Days below 50% (1Y) | 0 |
| 30D change | +0.39% |
Price alone hides rotation. Bitcoin can rally while alts bleed, or alts can rip while BTC is flat. Dominance answers a simple question: is the bid staying in Bitcoin, or is it spreading into the rest of the market? That is the same rotation the Altcoin Season Index tries to catch from the other side.
The live print is Bitcoin market cap divided by total crypto market cap. Ethereum is shown as its own slice; the remainder is everything else, including stables. Daily history is the same share across years of public market-cap snapshots — the path, not just today’s print.
A climb through 60% usually means Bitcoin is absorbing flows — often around ETF demand, macro risk-off, or after an alt flush. A slide toward 50% is the classic setup where large alts start to matter more. Dominance can stay high for months; it is a regime map, not a trigger.
High Bitcoin dominance plus a low Altcoin Season Index is a BTC-led tape. Falling dominance with greed in the sentiment gauge is when speculative alts usually get loud. Put CI100 on top: the flagship basket tells you whether the whole market is actually moving, or just rotating inside a flat range.