MARA Shares Plummet 7.67% on Record $1.61B Volume as U.S. Stock Ranks 73rd in Daily Liquidity

On October 10, 2025, MARA Holdings (MARA) closed with a 7.67% decline despite a 61.91% surge in trading volume to $1.61 billion, ranking it 73rd among U.S. equities by daily liquidity. The sharp divergence between volume and price highlights unusual market activity, potentially driven by algorithmic trading rotations or short-term liquidity shifts.

Recent developments suggest institutional scrutiny of MARA's capital structure, with analysts noting increased open interest in short-dated options contracts. While no direct earnings or regulatory updates were disclosed, the stock's performance aligns with broader market rotation toward lower-beta sectors, as high-volume names often face mean-reversion pressures after extended outperformance.

Backtest parameters for the volume-based strategy require clarification on universe composition (exclusion of ETFs/SPACs), timing mechanics (execution at tomorrow's open), and return aggregation methodology. The platform's single-asset constraint necessitates a custom workflow to compute equal-weighted portfolio returns across 500 tickers, with slippage assumptions and corporate action adjustments pending confirmation. Final results will include equity curves and risk metrics like CAGR and Sharpe ratio, but implementation remains conditional on confirming these operational details.