Altcoin Season Warning: Analysts Say This Trigger Could Send Prices Soaring
The cryptocurrency market is set for a potential “altcoin season†in 2025, where altcoins could surpass Bitcoin in price performance.
But analysts at Bitfinex warn that such a rally depends on the approval and launch of new crypto exchange-traded funds (ETFs) dedicated to higher-risk digital assets beyond Bitcoin and Ethereum.
While market indicators show signs of a growing altcoin momentum, regulatory and macroeconomic factors will most likely determine the timing and scale of this long-anticipated altseason.
Is the Crypto Market Shifting Toward Altcoins?
As of Aug. 26, 2025, Bitcoin’s market dominance stands at 57.8%, down from a 2025 high of 65%, according to CoinMarketCap data, meaning there may be an inflow of capital into altcoins.
Bitcoin Dominance (Source: CoinMarketCap)
The Altcoin Season Index, which tracks the 90-day performance of the top 50 altcoins against Bitcoin, is between 42 and 52, with recent readings at 45 as of Aug. 26, 2025. A testament to the fact that altcoins are gaining ground but are yet to dominate market performance.
Altcoin Season Index (Source: CoinMarketCap)
Bitfinex analysts point to a “softer risk appetite†in the crypto market, with capital inflows behind previous bull runs in 2017 and 2021.
Bitcoin spot ETFs, approved in January 2024, recorded $40 billion in inflows during Q2 2025, but the general market outlook remains low.
In contrast, Coinbase’s head of research, David Duong, predicts a full-fledged altcoin season by September 2025, which he believes will be driven by declining Bitcoin dominance and the recent macroeconomic difficulties.
Market data from the CME FedWatch Tool also reveals an 83.1% probability of a 25-basis-point Federal Reserve rate cut in September, a decision that will probably unlock trillions of dollars in money market funds to fuel altcoin liquidity.
However, Bitfinex claims that a sustained rally will have to continue in order to witness ongoing new ETF product demand.
Will ETF Approvals Fuel the Next Altcoin Season?
The approvals of spot Bitcoin ETFs in January 2024 and Ethereum ETFs in July 2024 have set the stage for more altcoin ETF filings, seen as an important trigger for the next altcoin season.
Bloomberg ETF analysts Eric Balchunas and James Seyffart report 31 pending applications with the U.S. Securities and Exchange Commission (SEC) for ETFs linked to digital assets like Solana, XRP, Litecoin, and Dogecoin, with a 95% likelihood of Solana and XRP approvals.
Major asset managers, like Grayscale, Bitwise, and Franklin Templeton, are leading these efforts, with SEC decision deadlines set for Oct. 16–19, 2025.
That’s after the SEC has delayed Solana and XRP ETF decisions due to ongoing controversies over their nature as securities or commodities, despite Ripple’s recent legal victory clarifying XRP’s non-security status.
Meanwhile, Ethereum ETFs saw aggregate inflows of $12 billion in August 2025, with daily highs of $1 billion, showing sustained institutional demand.
Analysts suggest that approved altcoin ETFs could bring real capital into the market, further improving digital assets like Solana, known for its scalable blockchain, or XRP, valued for its payment solutions.
Although, only projects with strong backgrounds are likely to benefit, as regulation remains a major challenge.
Which Altcoins Will Rise?
Unlike the previous altcoin season rallies of past cycles, the 2025 altseason appears to be selective and institution-driven.
CryptoQuant CEO Ki Young Ju describes a “two-tier†market where only altcoins with ETF exposure or strong use cases—such as Ethereum, Solana, or DeFi tokens—will outperform.
The altcoin market cap has grown by $400 billion since July 2025, reaching $1.6 trillion, a 33% increase, as revealed by data from CoinMarketCap.
Altcoin Market Cap and Index Chart (Source: CoinMarketCap)
With the SEC’s crypto-friendly stance on reviewing filings, altcoin ETF approvals could change the market by offering regulated investment products.
