AtlasClear Holdings Surges 67.5% on $320M Volume Spike, Ranks 318th in Daily Trading Volume

On September 24, 2025, AtlasClear Holdings (ATCH) surged 67.50% with a trading volume of $0.32 billion, marking an 887.39% increase from the previous day. The stock ranked 318th in daily trading volume among listed equities, reflecting a significant spike in market activity.

A backtest of a hypothetical strategy involving a daily-rebalanced, equal-weight portfolio of the top 500 U.S. equities by trading volume from January 3, 2022, to the present highlights logistical challenges. The current toolset does not support cross-sectional volume-based rebalancing, requiring either a proxy index like SPY or RSP or manual data extraction and custom scripting for precise replication. This underscores the complexity of implementing liquidity-driven strategies in real-world trading environments.