T's 0.89% Drop on $250M Surge in Volume Ranks 450th in Market Activity

. 11, 2025, . The move followed mixed macroeconomic signals and sector-specific dynamics impacting financial assets.

Analysts noted the stock's volume surge reflected heightened retail participation amid shifting risk appetite, though institutional outflows remained muted. Sector rotation toward defensive plays limited broader market gains, with fixed-income volatility contributing to reduced equity exposure. The company's recent earnings guidance had already tempered near-term expectations, with investors recalibrating to a slower earnings growth trajectory.

To set up this “top-volume 500” day-trading back-test accurately, I need to pin down a few implementation details and confirm some assumptions. Once those are fixed, I can pull the required data automatically and run the test for you. Key points that still need confirmation: 1. Market universe • Should I screen across all listed U.S. common stocks (NYSE + Nasdaq + Amex), or a different universe (e.g., only S&P 1500 constituents, only Chinese A-shares, etc.)? 2. Ranking & trade timing • Ranking metric – Daily dollar volume (price × shares) or share volume? • Selection timestamp – Use the current day’s close (T) to rank, buy at that same close, and exit at next-day close (T+1)? • Weighting – Equal-weight each of the 500 names, or volume-weighted? 3. Transaction costs / slippage • Should I include a per-trade cost assumption (e.g., 1 bp each side) or ignore costs? 4. Benchmark (optional) • If you’d like a benchmark (e.g., SPY) for relative performance, let me know. Please confirm or amend these items, and I’ll proceed to retrieve the data and run the back-test.