Is Altcoin Season Coming? Bitcoin Dominance Declines as Index Hits Monthly High

Bitcoin Dominance (BTC.D) declined from over 61% to 58.8% in November 2025. Meanwhile, the Altcoin Season Index has surged to its highest level in over a month. Although the uptick in the index does not confirm the start of an altcoin season, several analysts believe BTC.D could continue to trend lower, benefitting alternative cryptocurrencies. Bitcoin Dominance Breakdown Signals Potential Market Shift Bitcoin Dominance reflects Bitcoin’s share of the total cryptocurrency market capitalization. This metric is a key signal for understanding how capital moves between Bitcoin and altcoins. According to market data, BTC.D declined notably in November 2025, falling from 61.4% to a current value of 58.8%. Decline in Bitcoin Dominance. Source: TradingView At the same time, the Altcoin Season Index has climbed steadily since last week. At the time of writing, it stood at 47, marking its highest level since mid-October. This occurred as Bitcoin slipped below the $90,000 level. Still, it does not signal an imminent altcoin rally. Instead, it suggests that Bitcoin is losing value faster than altcoins, even though both segments of the market continue to decline. The shift has fueled fresh debate over whether this dip is temporary or part of a broader structural rotation. Cryptocurrency analyst ChartingGuy outlined that the metric is turning bearish on the weekly chart. “BTC.D is the main thing giving me hope. It’s finally flipping bearish again on the weekly,” he said. The analyst pointed out two main interpretations for the breakdown in Bitcoin dominance. His analysis suggests either Bitcoin could crash more than altcoins, or the market might bounce with altcoins positioned to outperform. Bitcoin Dominance Weekly Chart Showing a Head-and-Shoulders Pattern. Source: X/ChartingGuy According to him, the first scenario appears more likely, given the development of a potential head-and-shoulders pattern forming on the chart. Meanwhile, analyst Gert van Lagen stressed the long-term structural significance of the breakdown. He noted that BTC.D has broken down from a multi-year uptrend lasting more than three years. “Bitcoin Dominance has broken down from a 3+ year uptrend, retested that structure at ⭐️, and is now breaking lower again on the LTFs. When BTC catches a bounce, altcoins are positioned to significantly outperform,” the post read. Bitcoin Dominance Long-Term Chart Showing Multi-Year Uptrend Breakdown. Source: X/Gert van Lagen Other market watchers also forecast that Bitcoin Dominance could continue falling, potentially reaching the 54% zone — a level not seen since December 2024. A dip in Bitcoin Dominance typically signals a shift in capital towards riskier assets, which can set the stage for stronger altcoin performance. However, if BTC keeps dropping faster than altcoins, it may reflect broader market weakness rather than a true altcoin rally. Thus, the breakdown marks an important turning point that could either support an altcoin recovery or signal deeper market stress. Nonetheless, analysts argue this could be an opportunity, not a reason to panic. “Technically, BTC.D looks ready for a massive drop, and that’s extremely bullish for altcoins. Those 80% crashes in alts? In my opinion, they’re opportunities, not reasons to panic. This is a big moment, and very few people can see what’s coming,” an analyst stated. As Bitcoin Dominance weakens, the coming weeks will be critical in determining what this actually means for the market. The post Is Altcoin Season Coming? Bitcoin Dominance Declines as Index Hits Monthly High appeared first on BeInCrypto.