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Qualcomm (QCOM) fell 2.23% on Sept. 25, with a trading volume of $1.37 billion, ranking 61st in market activity. The decline came amid mixed signals from its ecosystem, including regulatory uncertainties and sector-specific pressures.
Recent developments highlighted potential headwinds for the semiconductor giant. A pending antitrust review in a major market raised concerns over potential restrictions on its licensing model, while a key client’s delayed chipset roadmap reduced near-term demand visibility. Analysts noted these factors could pressure margins and revenue growth in the near term, despite the company’s strong position in 5G infrastructure and AI hardware development.
To run this back-test accurately I need a few clarifications: 1) Market universe—should I screen all U.S. listed common stocks, or a different universe (e.g., S&P 500 constituents, China A-shares, etc.)? 2) Ranking & trade timing—do we rank stocks by their trading-volume on the close of Day t, buy them at that same close, and sell at the close of Day t+1 (i.e., 1-day holding period, close-to-close returns)? Or do you prefer an open-to-close (buy next-day open, sell same-day close) approach? 3) Position sizing—equal-weight all 500 names each day, or size by something else (e.g., volume, volatility)? Once I have this information I can set up the screen-and-rebalance logic and run the back-test from 2022-01-01 to today.

Hunt down the stocks with explosive trading volume.

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