CoreWeave Surges 11.7% on Record $9.85B Volume Ranks 6th in U.S. Trading Activity

On September 30, 2025, CoreWeave (CRWV) surged 11.70% to close at a session high, with a record trading volume of $9.85 billion - a 254.11% increase from the prior day's volume. The stock ranked 6th in overall trading activity across U.S. equity markets, reflecting heightened institutional and retail interest in the cloud computing infrastructure provider.

Market observers noted the price action aligns with broader sector rotation into AI infrastructure plays, as CoreWeave's specialized GPU-as-a-service model gains traction amid rising generative AI adoption. While no direct earnings catalysts were reported, the surge in trading activity suggests position rebuilding following recent volatility in the technology sector's broader market correction.

Back-testing analysis of a hypothetical daily-rebalanced portfolio containing the 500 highest-volume U.S. stocks from January 1, 2022, to present would require either: (1) using an ETF proxy for high-liquidity equities; (2) analyzing individual tickers' performance when included in the top-volume list; or (3) importing externally calculated portfolio returns for performance evaluation. The methodology would need to account for transaction costs and liquidity constraints inherent in managing a 500-stock portfolio on a daily basis.