Ethereum and Major Altcoins Slide Below Key Support Levels as Market-Wide Selloff Deepens

The cryptocurrency market is experiencing one of its most significant corrections of 2025, and altcoins are bearing the brunt of the damage. Ethereum, the world’s second-largest cryptocurrency by market capitalization, has slipped below the $3,900 support level as a cascading selloff that began in late October continues to gather momentum, dragging the broader altcoin market into increasingly precarious territory.

The decline is not isolated to a single asset or sector. From Layer 1 competitors like Solana and Cardano to DeFi blue chips and meme coins, virtually every corner of the altcoin market is flashing red. Total market capitalization for altcoins has shed over $180 billion in the past two weeks alone, reflecting a level of panic selling that has not been seen since the aftermath of the FTX collapse in late 2022.

TL;DR

• Ethereum drops below $3,900, losing 18% in two weeks amid broader market selloff
• Solana falls 22% to $225, Cardano slides to $0.62 as Layer 1 tokens face heavy selling pressure
• Total altcoin market cap sheds $180 billion in two weeks
• DeFi tokens like Aave and Uniswap underperform amid Balancer exploit concerns
• Analysts identify $3,600 as critical support level for ETH

Ethereum Loses Critical Support

Ethereum’s decline below $3,900 represents a significant technical breakdown. The cryptocurrency had established the $3,900–$4,100 range as a strong support zone throughout September and early October, with buyers consistently stepping in to defend the level. That defense has now collapsed, with ETH trading at approximately $3,840 at press time, down more than 18% from its October highs above $4,700.

The sell-off in Ethereum is being driven by a combination of factors. Macro headwinds, including rising US Treasury yields and a strengthening dollar, are pressuring risk assets across the board. At the same time, the Ethereum network’s much-anticipated Pectra upgrade, while technically successful, has not provided the price catalyst many analysts expected. Network activity metrics remain robust, with daily transaction counts holding steady above 1.2 million, but the supply-demand dynamics in the spot market have shifted decisively in favor of sellers.

On-chain data from Glassnode reveals that a significant portion of ETH acquired in the $4,200–$4,600 range is now underwater, creating a pool of holders who may be inclined to sell into any relief rally. The percentage of ETH supply in profit has dropped from 82% in mid-October to approximately 68%, a level typically associated with extended bearish phases.

Layer 1 Competitors Face Heavy Selling

The damage extends well beyond Ethereum. Solana, which had been one of the strongest performers in 2025 with a rally above $290 in September, has retreated sharply to trade near $225. The decline represents a 22% drop in just two weeks and has erased nearly all of Solana’s gains from the past month. Network activity on Solana remains elevated, with daily active addresses consistently above 2.5 million, but the token price appears to have decoupled from fundamentals in the near term.

Cardano has not been spared either. ADA is currently changing hands at approximately $0.62, down from recent highs near $0.78. The decline comes despite the continued rollout of Cardano’s Chang hard fork upgrades and growing DeFi activity on the network. Total value locked in Cardano DeFi protocols has grown to over $520 million, a record high, yet the token price continues to struggle under the weight of broader market selling.

Avalanche’s AVAX token has also suffered, falling below $30 to trade at approximately $28.50. The decline comes as the Avalanche Foundation continues its push into real-world asset tokenization, a narrative that has yet to translate into sustained price appreciation during the current downturn.

DeFi Tokens Underperform

Decentralized finance tokens are among the hardest hit in the current selloff, compounded by the revelation of a $126 million exploit targeting Balancer on November 7. Aave’s AAVE token is down 25% over the past two weeks to approximately $215, while Uniswap’s UNI has fallen to $10.80, a level not seen since August.

The Balancer exploit has sent shockwaves through the DeFi ecosystem, raising fresh questions about the security of automated market maker protocols and the adequacy of current audit practices. The attack, which exploited a precision vulnerability in Balancer’s vault contracts, resulted in the draining of approximately $126 million in user funds. While Balancer has since patched the vulnerability and is working with law enforcement, the incident has added fuel to an already intense sell-off in DeFi governance tokens.

Curve Finance’s CRV token has also been dragged lower, trading at $0.52 despite the protocol maintaining its position as the second-largest DEX by total value locked. The disconnect between protocol fundamentals and token price is a recurring theme across the DeFi sector, where governance tokens continue to struggle with value accrual narratives.

Meme Coins and Smaller Altcoins Crash

The meme coin sector, which had been a source of outsized returns for much of 2025, is experiencing a brutal reckoning. Dogecoin has fallen to $0.145, down more than 30% from its October peak. Shiba Inu has performed even worse, dropping below $0.000022 as retail interest wanes and speculative capital exits the market.

Smaller meme coins on Solana and Base have been decimated, with many tokens losing 50–70% of their value in a matter of days. The speculative frenzy that drove billions in trading volume on decentralized exchanges has evaporated, leaving latecomers with significant unrealized losses.

What Analysts Are Watching

Technical analysts are watching several key levels across the altcoin market. For Ethereum, the $3,600 zone represents the next major support, coinciding with the 200-day moving average and a high-volume node from the July–August consolidation period. A break below $3,600 could open the door to a decline toward $3,200, which would represent a 32% correction from October highs.

For Solana, the $200 level is being closely monitored. This was the breakout level from the August rally, and a sustained break below it could signal a return to the $160–$180 range that characterized much of the summer. On-chain metrics show that long-term SOL holders are largely holding steady, with less than 2% of supply moving to exchanges in the past week, suggesting that the selling is primarily driven by short-term traders and leveraged positions.

Funding rates across major altcoin perpetual futures markets have turned deeply negative, with ETH funding at -0.03% and SOL at -0.05%. While negative funding typically indicates bearish sentiment, contrarian analysts note that extremely negative funding has historically preceded short-term bounce setups.

Why This Matters

The current altcoin selloff is testing the resolve of investors who entered the market during the bullish summer months. With total altcoin market cap down approximately 28% from its October peak, the question facing traders is whether this is a healthy correction within a broader bull market or the beginning of a more prolonged downturn. The macro backdrop remains uncertain, with the Federal Reserve’s monetary policy stance and geopolitical tensions in the Middle East providing headwinds for risk assets. However, the fundamental developments across major altcoin ecosystems—from Ethereum’s Pectra upgrade to Solana’s growing institutional adoption—suggest that the underlying technology continues to mature regardless of short-term price action.

Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency markets are highly volatile, and past performance is not indicative of future results. Always conduct your own research before making investment decisions.