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Albemarle Corporation (ALB) rose 2.86% on September 5, 2025, with a trading volume of $0.39 billion, ranking 267th in terms of activity across U.S. equities. The lithium producer’s shares gained traction amid evolving market dynamics.
The stock’s rise followed reports that China announced plans to reduce competitive pressures in key industrial sectors, including those involving lithium production. Analysts noted that such regulatory measures could favor firms like
, which operate in high-demand, capital-intensive markets. The move signaled potential for reduced overcapacity risks, bolstering investor sentiment toward the company’s exposure to global battery and energy transition trends.Backtesting a daily-rebalanced strategy from January 3, 2022, to the present faces limitations in current platforms. The proposed approach involves ranking U.S. stocks by daily trading volume, going long the top 500 names for one day, and exiting at the next close. However, existing tools cannot dynamically manage multi-ticker portfolios based on volume rankings. Two options remain: using a broad ETF as a proxy or constructing a custom portfolio externally. Implementation requires further technical adjustments to the backtesting framework.

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