Bitcoin has reached a new all-time high, leading analysts to predict that the largest altcoin season in history may be approaching.
His arguments are based on cycles of capital flow and the historical behavior of the crypto market. Experts believe that excitement about BTC will soon spread to altcoins.
One of them is analyst Wimar.X, who highlights an interesting factor: historically, each altcoin season tends to start about 380 days after a Bitcoin Halving event. The most recent Halving occurred in April 2024. Based on this timeline, the altseason could begin as early as May 2025.
“The largest Altseason in history starts on May 25… The market value of altcoins will reach $15 trillion in this cycle,” predicts Wimar.X.
Market Value Forecast of Altcoins. Source: Wimax.X
The analyst also points out another typical trigger for the altcoin season. It usually starts after Bitcoin reaches a new all-time high (ATH), entering a phase of stabilization or slight correction. In this scenario, Bitcoin Dominance (BTC.D) tends to retreat. It is at this moment that capital begins to migrate from BTC to altcoins, driving their growth.
Recent data indicates that BTC.D fell from 65.4% to a low of 62%, before stabilizing around 63.7%.
“The crypto market operates in cycles — it is the only consistent pattern year after year. And when it comes to altseason, the formula is simple: decline in Bitcoin Dominance + Bitcoin price stagnant or rising = surge of altcoins. This is the only undeniable truth of the crypto market,” emphasizes Wimar.X.
This theory is shared by Carl Moon, founder of The Moon Show.
“Bitcoin Dominance is falling! The altcoin season is imminent!” declared Moon.
Another supporting factor is the historical performance of the crypto market in the second quarter (Q2). Data from Coinglass indicates that Q2 is usually one of the strongest periods for both Bitcoin and Ethereum.
Quarterly Returns of Bitcoin and Ethereum. Source: Coinglass.
Historical performance in the second quarter favors altcoins
Bitcoin posted an average return in Q2 of approximately 26.89%. Ethereum had an even more impressive performance, with an average return of 66.8%. Similar or even higher results can be expected for other altcoins, as they tend to follow ETH's trajectory. With the second quarter of 2025 underway, this may be the ideal time for altcoins to gain prominence.
However, not all indicators are entirely positive. According to Blockchain Center, the Altcoin Season Index has fallen to its lowest level of the year, marking 13, just when Bitcoin reached its new ATH. Since then, it has risen slightly to 18 at the time of this report.
Altcoin Season Index. Source: Blockchain Center.
This index evaluates the performance of the top 100 altcoins relative to Bitcoin over the last 90 days. If 75% of them outperform BTC, it is considered that the market is in altseason. Despite the optimistic outlook, the recent decline suggests that altcoins are still not taking the lead in the market.
This raises a relevant question: will the altseason continue to follow historical patterns, or will investors need to wait longer for capital to migrate from Bitcoin to altcoins?
The article Bitcoin's Rise Will Lead to Historic Altseason, Analysts Point Out was first seen on BeInCrypto Brazil.
