Bitcoin’s relationship with traditional financial markets is becoming increasingly visible as volatility spreads across global assets.
During last week’s market selloff, Bitcoin’s correlation with US equities climbed significantly, highlighting how digital assets can become vulnerable when broader financial markets experience sudden declines.
According to Fidelity Investments’ Jurrien Timmer, the growing correlation was part of a wider market movement that extended beyond artificial intelligence stocks and affected assets with little direct exposure to the AI sector.
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Timmer, Fidelity’s director of global macroeconomic research, observed that Bitcoin, real estate investment trusts, and the equal-weight S&P 500 index all recorded higher correlations with the broader S&P 500 during the latest downturn.
The development suggests that investors were reducing exposure across multiple asset classes rather than limiting their selling activity to technology companies that had previously driven market weakness.
One notable finding was the change in correlation among stocks outside the artificial intelligence sector. According to Timmer, a basket of stocks excluding AI-related companies saw its correlation with the broader market increase to 40%, compared with approximately 10% previously.
This substantial increase indicates that selling pressure had spread throughout the equity market, weakening the distinction between technology-related investments and other sectors.
Timmer explained the phenomenon in a post on X, noting that correlations frequently converge when markets experience sufficiently sharp and rapid declines.
His observation reflects a familiar pattern in financial markets: during periods of heightened uncertainty, investors often prioritize reducing risk and raising liquidity over maintaining exposure to individual assets based on their underlying fundamentals.
Bitcoin’s performance during Thursday’s selloff reinforced this relationship. The cryptocurrency declined 5.4%, significantly underperforming the S&P 500, which also recorded losses.
Rather than behaving as an independent investment or defensive asset, Bitcoin moved alongside risk-sensitive financial instruments, demonstrating how closely connected digital assets can become to traditional markets during periods of stress.
This development contrasts with Bitcoin’s market behavior in August, when the cryptocurrency appeared to move more closely with gold than US equities.
Research from Grayscale indicated that Bitcoin’s 90-day correlation with the Nasdaq had declined to approximately 33% during that period. The lower relationship suggested that Bitcoin was displaying some independent market characteristics.
Although it did not establish that the cryptocurrency had become a reliable hedge against equity market declines. However, Fidelity’s latest observations suggest that the recent market environment has changed.
As concerns surrounding artificial intelligence valuations triggered selling across technology shares, the resulting pressure spread into other investments. The only assets remaining at or below zero correlation in Fidelity’s chart were the US dollar, commodities, and trend-following commodity trading advisers (CTAs).
This shift carries important implications. Institutional adoption, spot exchange-traded funds, and growing participation from traditional financial institutions have strengthened Bitcoin’s connection with mainstream investment markets.
While these developments support market liquidity and broader acceptance, they can also expose cryptocurrency prices to the same macroeconomic pressures affecting equities.
Bitcoin’s rising correlation with US stocks demonstrates that its role as a portfolio diversifier remains dependent on market conditions.
Although the cryptocurrency may occasionally trade independently, periods of aggressive selling can bring different asset classes together. Investors will therefore be watching whether Bitcoin regains its independent price behavior or remains sensitive to movements across the broader US financial market.