HCA Healthcare's $420M Surge Ranks 281st in U.S. Equities as Stock Gains 0.93%

On October 6, 2025, HCA Healthcare (HCA) traded with a volume of $420 million, ranking 281st in terms of trading activity across U.S. equities. The stock closed up 0.93% for the session, outperforming broader market benchmarks amid mixed sector performance.

Recent developments in the healthcare sector have underscored HCA’s strategic positioning in the post-pandemic recovery phase. Analysts noted that the company’s focus on expanding outpatient services and optimizing operational efficiency has bolstered investor confidence. Earnings visibility remains a key catalyst, with upcoming quarterly reports expected to highlight progress on cost management and revenue diversification initiatives.

To run this back-test accurately I need to pin down a few implementation details: Universe • Should I use all U.S. common stocks (NYSE + Nasdaq + Amex) or another universe (e.g., only S&P 1500 constituents, only Russell 3000, etc.)? Weighting • Equal-weight each of the 500 names, or weight by dollar volume / market cap? Execution price • Buy at the close on day t and sell at the close on day t + 1 (the standard 1-day “close-to-close” hold), or some other convention (e.g., open-next-day)? Survivorship bias • Is it acceptable to work with today’s live symbol list (quick but includes survivorship bias), or do you prefer a survivorship-free universe (slightly longer data prep)? Once these points are set I can generate the daily trade lists, create an aggregate portfolio series, and run the performance back-test from 2022-01-01 through today. Let me know your preferences and I’ll proceed.