CFs 395% Surge and 250M Volume Hit 467th Market Rank

On October 2, 2025, CF shares rose 3.95% to close with a trading volume of $0.25 billion, ranking 467th in market activity. The stock’s performance drew attention amid mixed market conditions as broader indices showed modest gains.

Recent developments suggest renewed investor interest in CF’s core operations. Analysts noted that recent operational updates highlighted supply chain optimization initiatives, which align with broader industry trends toward cost efficiency. While no official earnings guidance was released, the stock’s volume surge indicates potential short-term positioning by traders anticipating near-term catalysts.

Market participants observed that CF’s trading pattern deviated from its sector peers, with liquidity clustering observed in late afternoon trades. This contrasts with typical high-volume days for the sector, suggesting possible strategic accumulation rather than reaction to macroeconomic data or sector-specific news.

To run this back-test robustly I need a few practical details: 1. Universe • All listed U.S. common stocks, or only a preset group (e.g., current S&P 500 constituents)? 2. Volume definition • Raw share volume or dollar volume (price × share volume)? 3. Signal timing • Rank stocks on today’s volume, buy at today’s close, and exit at tomorrow’s close (T + 1)? • Or rank on yesterday’s volume, buy at today’s open, exit at today’s close? 4. Transaction costs / slippage assumptions (if any). Please let me know so I can configure the back-test (or suggest an approximation if our single-ticker engine needs adjustment for a 500-stock basket).