Bitcoin and Ethereum Correlation Breaks Down, Marking a Key Turning Point

New data, shared by CryptoQuant reveals a significant shift in crypto market dynamics: the historically strong correlation between Bitcoin (BTC) and Ethereum (ETH) has collapsed

The narrative that Bitcoin and major altcoins are becoming less correlated in 2025 continues with striking new data from CryptoQuant.

Its BTC-Alts Correlation Matrix highlights a dramatic collapse in the correlation coefficient between BTC and ETH.

At the start of the year, on January 1, 2025, the correlation stood at 0.63. However, by May 22, 2025, it plummeted to a near-zero level of 0.05.

This shift showcases a potential turning point in crypto market dynamics.

Historically, BTC and ETH were known to move in tandem, especially during market cycles or during periods of strong external pressure, such as geopolitical events or global macroeconomic shifts.

A high correlation coefficient, typically within the range of 0.5 to 1, would indicate that the two crypto assets’ price movements were closely synchronized.

But recent data from CryptoQuant indicates that this correlation has been inverse. As BTC blitzed to new all-time highs in 2025, its gains were largely realized in the first half of the year. From there, BTC went on to trade sideways, with its price failing to sustain gains above the $80,000-$75,000 band.

Conversely, ETH and its Layer 2 ecosystem—including Optimism (OP), Polygon (POL), Arbitrum (ARB), zkSync, and Starknet (STRK)—underperformed or stagnated throughout 2025.

Despite a promising start with the successful integration of the Shanghai upgrade, which enabled the withdrawal of staked ETH in February, ETH/USD failed to sustain gains above the $2,000-$2,500.

This trend has increased investor uncertainty and raised concerns about Ethereum's positioning in future bull markets.

Also Read: Institutional Interest in Bitcoin Remains High Despite Recent Price Pullback: Report

Its narrative has shifted from ‘when will Shanghai happen’ to worries about its role in the next bull market.

For retail investors and ecosystem developers, the breakdown in correlation could hinder confidence and adoption.

Ethereum's struggle to keep pace with Bitcoin may delay mass user onboarding and further tilt capital flows toward BTC-dominated strategies.

As the CryptoQuant analyst warns, this historic decoupling is not just a market quirk—it may reshape how crypto portfolios are constructed and how institutional capital views Ethereum in the long term.