The last true Altcoin season occurred when most Altcoin surged in 2017. According to the analyst Michaël Van de Poppe, a similar cycle was not repeated in 2021 or 2025.
The market is now “Bitcoin Season”, and the Altcoin season index is less than Altcoin Season Index 25, which is almost the same as 75 necessary for the Altcoin season.
Altcoins have been evaluated to watch the next big cycle
Michaël Van de Poppe traced the ALT season to 2017 when Altcoins, such as Ethereum and Ripple, saw tremendous growth. However, he noted that in 2021 only the new Altcoins surged, and 2025 was dominated by “Meme Coin Fiesta.”
“The migration has been found to be completely different from the previous cycle and has been proven to be very complex.” Michaël Van de Poppe said.
The Altcoin Season Index chart in the blockchain center clearly shows this trend. The index remained less than 50 in 2024 and 2025, emphasizing Bitcoin’s dominance. According to CoinmarketCap, Bitcoin’s dominance is currently 63%, much higher than 38%during the 2017-2018 ALT season.

Van de Poppe also pointed out the division of the investor community. While one group expects the bear market to continue, the other group expects a new bull cycle. He thinks the two groups can be wrong. Instead, he suggests that the actual opportunity is to ignore the “timing” and focus on the basic value of Altcoins.
“In essence, the difficulty of this cycle has increased significantly, and it is almost foolish to build a full paper about what happened.” Michaël Van de Poppe said.
Macroeconomic factors play an important role in forming the Altcoin season. Van de Poppe pointed out that Altcoin could surpass Bitcoin due to a drop in interest rates and weak US dollars. In addition, the development of the defect ecosystem and the increase in Altcoins, such as Ether Leeum, are positive signs.
“Altseason can cause very undervalued Altcoins, but it’s a time when there can be a powerful team that can be elastic and continuously built. There are many things, and they are very undervalued.” Michaël Van de Poppe said.
Investors should be careful and focus on projects with strong teams and solid foundations rather than chasing short -term trends. Given the current market, long -term investment strategies and thorough analysis are important for the upcoming season.
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