WDC Gains 0.04% as Trading Volume Plunges 44% to $1.13 Billion Ranking 89th in U.S. Equity Liquidity

On October 3, 2025, Western (WDC) closed with a 0.04% gain as trading volume dropped 44.17% to $1.13 billion, ranking 89th among U.S. equities by liquidity. The decline in volume suggests reduced short-term market interest despite the marginal price increase.

Analysts noted that sector-specific dynamics influenced the stock’s muted performance. With no major earnings releases or regulatory updates reported, the movement appears tied to broader market rotation rather than firm-specific catalysts. Institutional activity remained subdued, with no large block trades or fund rebalancing events recorded.

To run this back-test accurately I need to pin down a few practical details: Universe – Do we scan all U.S. listed common stocks (≈6,000 names) or a narrower universe (e.g., Russell 3000 constituents)? Non-U.S. markets involved? Ranking metric – “Daily trading volume” by shares traded (default) or by dollar value traded? Trade timing – Because the day’s volume isn’t known until the close, a bias-free implementation would: Rank stocks after the market close on day T, enter positions at the next day’s open (day T+1), and exit at the next day’s close (still day T+1). Is this schedule acceptable, or would you prefer an alternative (e.g., buy at today’s close, sell at tomorrow’s close)? Weighting – Equal-weight each of the 500 names (default) or weight by volume / market cap?