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McKesson (MCK) closed on October 6, 2025, with a 0.44% gain, despite a 38.15% decline in trading volume to $540 million, ranking it 225th among active stocks. The healthcare distribution giant's performance remains tied to sector-specific dynamics and operational efficiency metrics observed in recent reports.
Analysts note that McKesson's resilience in a low-volume environment reflects sustained demand for its supply chain solutions amid ongoing pharmaceutical industry consolidation. Recent filings highlight margin expansion through inventory optimization, though no new contracts or regulatory developments have been disclosed to directly impact equity valuation.
Back-testing parameters for volume-weighted strategies require clarification on market universes, ranking methodologies, and rebalancing frequencies. Key variables include whether to focus on NYSE/NASDAQ/AMEX listings, how to define "top 500 by volume," and whether to use equal-weight or dollar-volume-weighted portfolios. Trading costs, data constraints, and proxy simplifications (e.g., Russell 3000 filters) also need resolution before executing the 2022-2025 analysis period.

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