United's $450M Volume Surge Pushes It to 251st Rank as 1.93% Drop Highlights Restructuring Focus

On September 29, 2025, United (UTHR) traded with a volume of $450 million, marking a 45.03% surge from the previous day's activity. The stock ranked 251st in trading volume among listed equities. The decline of 1.93% contrasted with the broader market's mixed performance, drawing attention to potential catalysts behind the volume spike.

Recent developments suggest renewed focus on United's operational restructuring efforts. Analysts noted that the company's strategic pivot toward cost optimization has sparked varied investor sentiment, with some positioning for long-term stability while others remain cautious about short-term execution risks. No material news about partnerships or regulatory updates emerged to directly influence the stock's movement.

To set this up accurately I’ll need a few extra details: 1. Universe • Should I look at all U.S.-listed common stocks (NYSE + NASDAQ) or a specific index/segment (e.g., S&P 500 constituents)? 2. Trade timing • Do we buy the top-volume names at each day’s close and exit at the next day’s close, or buy at next day’s open? 3. Weighting • Equal-weight the 500 names, or weight by dollar volume / market-cap? 4. Transaction costs • Any slippage/commissions you’d like factored in, or can we ignore them for this first pass? Once I have those, I can pull the volume data, generate the daily signals, and run the back-test from 2022-01-01 through today.