Yeliz Akmaca 
According to CoinMarketCap, the CMC Crypto Alt Season Index fell to 34 on October 12, 2025, indicating that the market has entered the Bitcoin Season period.
What is the CMC Crypto Alt Season Index?
The CMC Crypto Alt Season Index is a real-time indicator used to determine whether the current cryptocurrency market is in an altcoin-dominated season. It measures the performance of the top 100 altcoins against Bitcoin over the past 90 days.
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Bitcoin Season: Period when Bitcoin dominates the market
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Altcoin Season: Period when altcoins outperform Bitcoin
Current and Historical Values
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Current Value (Oct 12, 2025): 34
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Yesterday: 33
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Last Week Average: 59
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Last Month Average: 68
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Yearly High (Dec 4, 2024): 87 (Altcoin Season)
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Yearly Low (Apr 26, 2025): 12 (Bitcoin Season)
The index shows that approximately 34 out of the top 100 cryptocurrencies by market cap have performed better than Bitcoin in terms of price growth over the past 90 days.
Altcoin Investment Strategies
A low Alt Season Index provides important signals for investors:
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Portfolio Balance: Reassess Bitcoin and altcoin allocations
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Risk Management: Consider smaller investments in altcoins
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Project Fundamentals: Analyze use cases, teams, and roadmaps before investing
Conclusion
The CMC Crypto Alt Season Index dropping to 34 indicates that the market has shifted to Bitcoin Season. Investors should act cautiously and adjust their strategies according to market trends.
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