Following the latest market developments, the Altcoin Season Index, which tracks top Altcoins vs Bitcoin over a 90 day window, has gone from the low 30s to stay at 43, according to CoinMarketCap currently. Some experts are speculating that the Altcoin season 2025 seems to be building.
Naturally, every time the index breaks 50 convincingly, it goes further towards a full Altcoin season (75-80). Bitcoin’s dominance has eased from over 65% to around 61% further buttressing the clear signs of Altcoin Season 2025.
Why the September Fed Meeting Is of High Importance
Market observers’ eyes are on the upcoming U.S. Federal Reserve’s September meeting. The speculation is that regulators will relax the Supplementary Leverage Ratio (SLR) rule, which will give banks more room to hold government bonds and thus improve liquidity across the markets.

If that happens while the U.S. Treasury refills its TGA (Treasury General Account), net liquidity could be stable or even improve and capital will flow into risk assets including altcoins.
Coins That Could Lead This Altcoin Season 2025
Top names like Ethereum (ETH), Solana (SOL), Ripple (XRP), and Binance Coin (BNB) are always mentioned by market voices as the most likely leaders if momentum continues.
Ethereum is the backbone of decentralized finance and staking, with whale accumulation and rising on-chain metrics. Solana is for high-speed execution and is the preferred base layer for meme tokens and new projects.
XRP and BNB benefit from institutional interest and momentum. These are not speculative altcoins, they’re established networks with use cases deep enough to survive a selective bull run.
Expert Voices: Not All Altcoins Will Survive
Analysts like CryptoQuant CEO Ki Young Ju had previously aired that most altcoins will not survive this phase. He says this year Altcoin Season 2025 will be selective. He stated that only projects with revenue models, strong user bases and institutional backing will perform.
Crypto influencer Crypto Rover agreed, telling traders to not panic and not flip bearish during early phase price movements. He says volume upticks and slight drops in Bitcoin dominance are classic signs of altseason loading.
Another expert known as ‘VirtualBacon’ has already reduced his altcoin basket to only core coins like ETH, SOL and is avoiding speculative names until global liquidity trends clear.

What Does It Mean for Investors
In simple terms, Altcoin Season 2025 is speculated to be happening quietly. But unlike previous cycles where almost all altcoins went up together, this time, experts say it’s gradual, focused and dependent on macro triggers like the Fed’s SLR decision. Capital is expected to rotate from Bitcoin into premier altcoins but only the strongest will survive.
Analyst say Ethereum, Solana, XRP and Binance Coin fit that criteria. They are believed to have liquidity, visibility and enterprise usage. Other altcoins without fundamentals might just fade or collapse.
Conclusion
Based on the latest research, the Altcoin season 2025 seems to be awakening but not as a broad, wild surge. It is currently a measured move towards altcoins with substance. Institutional capital, macro catalysts like Fed policy and on-chain activity are lifting a core set of altcoins.
Experts project Ethereum, Solana, XRP and BNB fall into this class, while weaker projects might not. Traders and investors are advised that this phase requires patience, discernment and due diligence; not FOMO buying.
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Summary
The Altcoin Season Index is moving towards 50, Bitcoin dominance is declining and liquidity may improve after September’s regulatory decisions. But Altcoin Season 2025 will be selective. Ethereum, Solana, XRP and BNB will lead, while speculative projects without fundamentals might be left behind.
FAQs
What does the Altcoin Season Index measure?
It compares performance of top 50 (or top 100) altcoins to Bitcoin over the last 90 days. Readings above 50 mean increasing altcoin strength; above 75 means full altseason .
Why September?
The Fed is proposing SLR reform in September. If liquidity rules ease and Treasury drawdowns slow, more capital may flow into markets and altcoin rotation may ignite.
Is Bitcoin dominance falling significantly?
Bitcoin dominance is down from 65 % to 60.8 %, a drop that typically precedes altcoin rallies.
Which altcoins will benefit?
Ethereum, Solana, XRP and BNB are projected to lead. These networks have real use case, deep liquidity, institutional relevance and resilience against speculative fade.
Will smaller altcoins rally too?
Analysts say it’s a selective altseason. Smaller, hype-driven tokens without fundamentals could underperform or fade.
Glossary
Altcoin Season Index – A measure of top altcoins vs. Bitcoin 90-day performance.
Bitcoin Dominance – Bitcoin’s market cap as a percentage of total crypto market.
SLR – Supplementary Leverage Ratio; a bank capital rule that affects how much government securities banks can hold.
TGA – Treasury General Account; deposits at the Fed that impact liquidity.