4 Signs That Altcoin Season Could Already be Here

Altcoin Season is now seemingly closer than ever. Following the outstanding momentum that altcoins went through this week, altseason trackers are now at their highest point in 2025, igniting the potential for a new altcoin-led bull run in crypto. 

Source: CoinMarketCap

While Bitcoin gained a respectable 4% increase in the week, altcoins surged ahead with double-digit gains. Ethereum grew by 10% in the same timeframe, while Solana and Dogecoin saw growths of 19% and 28%, respectively. 

In fact, nearly all of the top altcoins are outperforming Bitcoin in the week, suggesting growing momentum for these crypto assets. 

Highest Daily Close For The Altcoin Market Cap

September 12 market is a historic day for altcoins, as the total market capitalization of the crypto market, excluding Bitcoin, reached its highest-ever daily close. Currently at $1,72 trillion, today’s market performance surpassed the previous ATH in November 2021, seriously fueling speculation that the current altseason could eclipse previous cycles in both duration and magnitude.

Bitcoin Dominance is at an 8-Month Low

Meanwhile, Bitcoin dominance (BTC.D), which is the metric that assesses how much of the cryptocurrency market value is made up of Bitcoin, has now reached its lowest point in 8 months. 

Bitcoin dominance has been on a steep decline since the end of the first half of 2025. After $BTC reached several new all-time highs during the year, the crypto market may now be turning less risk-averse, looking for lower-cap action in search of higher profits. 

Currently at 57%, Bitcoin dominance is showing signs that it could continue moving downward, not particularly because Bitcoin is stagnating but rather because altcoins are performing better than the market-leading digital asset. 

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Altseason Index at its Highest Point in 2025

Coinglass’ Altcoin Season Index, a metric designed to track whether altcoins are performing better than Bitcoin, and how that translates into altseason potential, has now reached its highest reading in 2025. 

After spending most of the year in clear Bitcoin season, the index recently hit a 75 reading, indicating a decisive shift toward altcoin dominance, with the vast majority of top altcoins outperforming Bitcoin in the last 90 days.

Trending Institutional Demand For Altcoins

If the first half of 2025 was marked by significant development for institutional Bitcoin adoption, the last quarter of the year can be marked by a surge in institutional interest toward altcoins. The early signs of that trend happened when Ethereum ETFs started outperforming their Bitcoin counterparts, despite typically having lower trading volume. 

Now, with dozens of ETF applications pending at the SEC’s desk, it seems almost inevitable that we will see new altcoin-based ETFs entering the market later this year. Just recently, XRP, SOL, HBAR ETF applications entered the DTCC’s securities list, while Rex Osprey expects to launch a new Dogecoin ETF as soon as next week. 

Past ETF talks, corporate altcoin treasury also seems to be on a growing trend. Ethereum naturally leads the movement, with over $3.7 billion in ETH held by just 12 public companies. Other than that, there are also countless examples of altcoin treasuries coming up. 

A few days ago, we reported about Trump Media Group joining forces with Crypto.com to create the world’s largest $CRO treasury. Also, CleanCore Solutions acquired 285 million DOGE via a $175 million PIPE deal, aiming to reach 1 billion DOGE by the end of the year. Many altcoins have the added benefit of providing staking rewards, which could make them more attractive to institutional investors. 

Overall, time will tell if the altcoin season is already here or not. But nonetheless, the signs seem undeniably strong.

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