Bitcoin Loses 7-Month Trend Support and 64.4% Level Sparks Shift
- BTC dominance moved below 64.4 percent after holding an upward trend for over seven months straight.
- Traders are now expecting many altcoins to rise fast as Bitcoin gives up market strength this week.
- The price chart now shows that altcoin volume could increase while Bitcoin dominance continues to fall.
Bitcoin’s market dominance has dropped below a rising trendline for the first time in over 7 months, triggering speculation of a major altcoin rally. The 64.39% level was breached on July 11, 2025, marking a technical breakdown that analysts believe could lead to increased volatility across crypto markets.

Breakdown Below 64.40% Signals Shift in Market Structure
On the daily BTC Dominance ( BTC.D ) chart shared by CryptoBoss (@CryptoBoss1984), a clean breakdown below the ascending support line is clearly visible. This trendline had been respected since early January 2025, forming a reliable structure that guided Bitcoin’s growing market share over altcoins for most of the year.
The breakdown occurred just after BTC.D failed to reach the overhead horizontal resistance near 66.60%. This level had capped multiple rallies in recent months and acted as a reversal point yet again. With the loss of the 64.40% support, the trendline now becomes resistance, and traders anticipate continued downside if Bitcoin fails to recover this level quickly.
This sentiment shift is aligned with the chart setup, which now indicates a possible trend reversal in dominance. If BTC.D continues to decline toward lower support zones, such as the 62.00% or 60.50% levels, altcoins could experience sharp upward momentum. Historically, these levels have led to powerful sector-wide rotations, particularly during bullish macro cycles.
Market watchers are now monitoring whether BTC.D will confirm this breakdown with follow-through candles or if the dip will be short-lived. As of now, the immediate bias has tilted in favor of altcoin market strength.
Could a BTC Dominance Drop Trigger an Altcoin Supercycle?
The central question now emerges: could this BTC.D breakdown be the first step in a larger altcoin supercycle?
The drop has interrupted an eight-month uptrend that favored Bitcoin, creating conditions for a new alt-driven narrative. If dominance continues to decline, sectors such as DeFi, gaming, and layer-1s could see inflows.
Traders are already pricing in altcoin moves, with calls for rapid gains if BTC.D extends its breakdown. Historical trends support this theory, as multi-week drops in BTC dominance have often led to broad altcoin rallies, with some tokens gaining over 100% during similar past periods. All eyes are now fixed on upcoming sessions to see if the 64.00% level converts into resistance and confirms a structural shift in crypto capital flows.
Disclaimer: The content of this article solely reflects the author's opinion and does not represent the platform in any capacity. This article is not intended to serve as a reference for making investment decisions.
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