Altcoin Season Index Predicts Market Rotation: BTC vs Altcoins

Jakarta, Pintu News – The Altcoin Season Index (ASI) is an indicator developed by CoinMarketCap to help investors see the dominance trend between Bitcoin and altcoins (all crypto assets other than Bitcoin). Its value ranges from 0 to 100, with:

• 0-25 = Bitcoin Season: BTC dominates the market.
• 26-75 = Neutral: No significant dominance.
• 76-100 = Altcoin Season: Altcoins outperform Bitcoin.

This index is measured based on the performance of the top 100 altcoins in the last 90 days, compared to Bitcoin. If at least 75 of the 100 altcoins outperform BTC, then it can be said that the market is in altseason.

Also Read: $45 Million BNB Airdrop Ready to Rock the Meme Coin World in October 2025!

Latest Trend: Altseason Index Down to 27

Based on the latest data from CoinMarketCap as of October 16, 2025, the Altcoin Season Index stands at 27 out of 100. This indicates that the market is currently in the transition phase towards Bitcoin Season.

• Yesterday: 30
• Last week: 51
• Last month: 71

This means there has been a significant rotation of altcoins back into Bitcoin over the past 30 days.

Market Rotation: From Altcoins to Bitcoin

1. Why does rotation occur?

According to historical trends, the crypto market undergoes cyclical rotation:

• When altcoins outperform, traders take profits and shift back to BTC (more stable).
• A drop in the ASI index usually marks the beginning of a strong move in BTC.

CoinMarketCap data shows a decrease in the index from 87 (Altcoin Season, December 4, 2024) to 27, signaling that BTC’s dominance is increasing again.

2. Altcoin Market Capitalization Weakens

In the CoinMarketCap chart, the total market cap of altcoins is declining along with the ASI index. This indicates funds are leaving altcoins and flowing into BTC or stablecoins.

Bitcoin vs Altcoins: Who Dominates?

Trader’s Strategy: Read Market Rotation Wisely

1. Use Altseason Index as a Macro Signal
The Altcoin Season Index is not a direct buy/sell signal, but an indicator of market sentiment and capital direction.

2. Rotation = Opportunity

• When the index drops to 25 or lower, BTC usually strengthens.
• As the index rises above 75, altcoins have the potential to go higher.

3. Diversify
As markets transition, wise traders will begin to reduce exposure in speculative altcoins and strengthen positions in mainstream assets like BTC or ETH.

Conclusion

The current Altcoin Season Index gives an important signal: the market is in a phase of capital rotation back to Bitcoin. With the index at 27, BTC’s dominance is increasing after the long altseason period at the end of 2024.

For traders and investors, it’s time to adjust portfolio strategies. Understand the direction of capital flows to make more rational decisions in the face of crypto volatility.

Also Read: Michael Saylor’s Strategy: $27.2 Million Bitcoin Purchase Before the Crypto Market Crash

Follow us on Google News to get the latest information about the world of crypto and blockchain technology. Check today‘ s bitcoin price, today’s solana price, pepe coin and other crypto asset prices through Pintu Market.

Enjoy an easy and secure crypto trading experience by downloading Pintu crypto app via Google Play Store or App Store now. Also, get a web trading experience with various advanced trading tools such as pro charting, various types of order types, and portfolio tracker only at Pintu Pro.

*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.

Reference:

• CoinMarketCap. Altcoin Season Index. Accessed October 16, 2025.