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On October 3, 2025,
Inc. (WM) rose 1.31% to close trading, with a reported volume of $0.26 billion—a 34.37% decline from the previous day’s activity. The stock ranked 421st in trading volume among U.S. equities, reflecting a notable drop in liquidity compared to recent levels. The move followed a mixed session in broader markets, though WM’s performance stood out amid subdued trading dynamics.Analysts highlighted the reduced trading volume as a potential indicator of short-term caution among investors. Despite the price gain, the sharp drop in dollar turnover suggests a narrowing of market participation, which could signal a consolidation phase or a lack of conviction in the stock’s near-term trajectory. The company’s fundamentals remain unchanged, with no material news or earnings reports released to drive the session’s activity.
To ensure the back-test matches exactly what you have in mind, I need to clarify a few implementation details: 1. Stock universe—Which market(s) should we draw the “top-500-by-volume” list from? (e.g., all U.S. listed equities on NYSE + Nasdaq, only S&P 500 constituents, another universe, etc.) 2. Re-balancing mechanics—Do we buy at each day’s close and sell at the next day’s close, or open-to-open, or another convention? Equal-weight each of the 500 names, or weight them by something else (e.g., proportional to volume)? 3. Transaction costs / slippage—Should we include a commission or slippage assumption, or ignore trading costs? Because our back-testing engine is currently designed to evaluate one ticker (or one composite index) per run, if you’d like a true daily rebalanced multi-stock portfolio we may need to approximate it with a proxy (e.g., by testing against an ETF / index that tracks very high-volume names) or run a custom script outside the built-in engine.

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