BlackRock Clings to 0.8% Gains as Trading Volume Dives 35.77% to Rank 201st in U.S. Turnover

On Sept. 26, 2025, BlackRock (BLK) closed at 0.80% higher, with a trading volume of $500 million, representing a 35.77% decline from the previous day’s activity. The asset manager ranked 201st among U.S. equities by daily turnover, reflecting muted market participation despite its modest price gain.

The subdued volume contrasted with BlackRock’s recent performance trajectory, which has shown resilience amid broader market volatility. Analysts noted that the firm’s exchange-traded fund (ETF) inflows remain a key driver of investor confidence, though recent macroeconomic uncertainty has tempered trading enthusiasm. Sector-wide trends suggest investors are prioritizing liquidity management over aggressive positioning, a dynamic that may persist into the earnings season.

To run this back-test accurately I’ll need to clarify two practical points: 1. Stock universe – do you want the ranking performed across all U.S. listed common stocks, strictly within the S&P 500 constituents, or another universe? 2. Trade price convention – should we assume you buy the selected names at that day’s close and exit at the next day’s close (typical for end-of-day volume signals), or buy at the next day’s open and exit at that day’s close? If you’re fine with the broad U.S. universe and “buy at close / sell next close,” let me know and I’ll proceed; otherwise please specify your preference.