MSTR Ranks 21st in Market Activity as Trading Volume Surges 46.36% to 3.58B on Institutional and Algorithmic Momentum

On September 12, 2025, Strategy (MSTR) surged 1.66% with a trading volume of $3.58 billion, marking a 46.36% increase from the previous day and ranking 21st in market activity. The stock's performance was driven by heightened institutional participation and algorithmic trading activity observed during afternoon sessions.

Market participants noted unusual order flow patterns as large-cap technology stocks experienced coordinated buying pressure. While no official guidance was issued, analysts observed that the stock's volume profile showed a 23% rise in block trades compared to its 30-day average. This aligns with broader market trends showing increased volatility in momentum-driven sectors during the final quarter of the year.

Backtesting analysis for a high-volume trading strategy reveals critical parameters that impact performance outcomes. Key considerations include universe constraints (e.g., Russell 3000 vs. S&P 500), execution timing (close vs. open), and cost assumptions (e.g., 2 basis points per transaction). Weighting methodologies—whether equal-weight or volume-based—also significantly influence returns. The testing period from January 3, 2022, to September 11, 2025, provides a comprehensive dataset for evaluating strategy efficacy under varying market conditions.