Altcoin Season Incoming? Bitcoin Dominance Plummets as Ethereum, XRP, and DOGE Surge

Bitcoin dominance has dropped nearly 7% in a month, echoing 2021’s altcoin boom. Could August mark the return of explosive gains for altcoins?

Bitcoin market dominance has plunged by nearly 7% over the past 30 days, breaking through a long-standing 3-year trendline. This sudden shift has ignited speculation among traders and analysts about the arrival of a new altcoin season—possibly in August.

Well-known crypto analyst Crypto Rover recently shared a chart highlighting the uncanny resemblance between Bitcoin dominance patterns from 2021 and 2025. Back in 2021, a similar falling wedge formation resulted in a dramatic altcoin rally. Now, as the same structure appears again, Rover believes the market could be on the brink of a repeat scenario.

Bitcoin dominance, which had recently peaked at around 72%, is now descending rapidly, currently hovering near 61%. According to Rover’s projections, this slide might continue, with dominance potentially dropping to 52% or lower. Such a decline typically signals capital rotating out of Bitcoin and into altcoins—a hallmark of past altseasons.

And the trend is already materializing. Altcoins like Ethereum, Solana (SOL), XRP, and Dogecoin have begun outperforming Bitcoin in terms of price momentum and trading volume. Notably, Glassnode data shows that Ethereum’s perpetual futures trading volume has overtaken Bitcoin’s for the first time since the 2022 market bottom. This shift is seen by many as a major indicator of growing interest in Ethereum and other altcoins.

Despite this momentum, the Altcoin Season Index from Blockchain Center has dipped to 37, down from 55 on July 21—still below the threshold needed to officially declare an altcoin season. However, the underlying signals suggest a buildup is in progress.

If the pattern continues and Bitcoin’s dominance weakens further, August could mark the beginning of a vibrant altcoin rally, reminiscent of the explosive gains seen in 2021. Even if Bitcoin remains the market leader, altcoins may soon capture the spotlight once again.

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