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On October 1, 2025,
(CAH) rose 0.62% with a trading volume of $590 million, ranking 220th in market activity. The stock's performance reflects modest gains amid broader market dynamics, with volume levels indicating moderate investor engagement compared to peers.Analysts noted that the healthcare services provider's movement aligns with sector-specific trends rather than broader equity indices. While no company-specific news directly influenced the share price, market participants observed increased positioning in healthcare stocks driven by macroeconomic factors such as interest rate expectations and sector rotation patterns.
The back-testing framework for evaluating trading strategies requires clarification on three key parameters: 1) Whether the universe of top 500 stocks by volume is confined to U.S. equities or spans multiple exchanges, and if daily rebalancing is required; 2) Position sizing methodology (equal-weight or volume-proportional allocation); 3) Practical constraints in current testing platforms, which currently process single tickers rather than full baskets. These clarifications are critical to ensure accurate replication of intended strategies.

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