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Jakarta, Pintu News – The Altcoin Season Index (ASI) is a popular indicator from CoinMarketCap that shows whether the cryptocurrency market is in a Bitcoin Season or Altcoin Season phase.
The index has a value range of 0 to 100:
According to CoinMarketCap, the index is calculated based on the performance of the top 100 altcoins compared to Bitcoin in the last 90 days. If 75 altcoins beat BTC’s performance, then the market goes into altcoin season.
Many crypto newbies have a hard time reading market trends. The Altcoin Season Index provides a simple macro guide to see where funds are moving in the crypto market: whether it’s the best time to get into altcoins, or if it’s safer to stay in Bitcoin.

Crypto moves in cycles of dominance:
ASI helps you visually identify these cycles. If the index rises above 75, the altcoin is strong. But if it drops below 25, BTC is leading the market.
The Altcoin Season Index is not a direct buy or sell signal, but a tool to read market conditions.
Example:
If ASI shows altcoin season and you want to buy an altcoin, you can be more confident. But still do additional analysis such as trading volume, price trends, and project fundamentals.
CoinMarketCap also provides Top 100 Coin Performance data in 90 days. This is useful to see which altcoins are outperforming. For example:
Use this data to filter out altcoins that have strong potential during altseason.
When the ASI is between 26-75, it means that the market is volatile or changing direction. This can be a confusing phase for beginners.
Tips:
The Altcoin Season Index changes daily based on market performance.

Based on CoinMarketCap’s Altcoin Season Index data as of October 16, 2025:
Beginner traders can use this info to avoid FOMO on altcoins, and focus more on more stable assets like BTC, ETH, or stablecoins.
The Altcoin Season Index is a simple yet powerful tool for understanding crypto market trends. For beginners, it can be a very useful initial guide to:
But always remember, additional analysis and risk management is a must, as the crypto market can change very quickly.
Also Read: Michael Saylor’s Strategy: $27.2 Million Bitcoin Purchase Before the Crypto Market Crash
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*Disclaimer
This content aims to enrich readers’ information. Pintu collects this information from various relevant sources and is not influenced by outside parties. Note that an asset’s past performance does not determine its projected future performance. Crypto trading activities are subject to high risk and volatility, always do your own research and use cold hard cash before investing. All activities of buying andselling Bitcoin and other crypto asset investments are the responsibility of the reader.
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