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On October 10, 2025,
(V) traded with a volume of $2.17 billion, marking a 40.63% increase from the previous day's trading. This placed the payment processor's stock at the 49th position in terms of trading activity across the U.S. equity market. Despite the surge in liquidity, shares of Visa closed down 0.98% for the session, reflecting mixed market sentiment ahead of key earnings reports and macroeconomic data releases later in the week.Recent developments suggest shifting dynamics in the fintech sector as investors recalibrate expectations for digital payment growth. Analysts noted heightened sensitivity to regulatory developments in Europe, where ongoing antitrust investigations could impact cross-border transaction fees. Meanwhile, institutional buying activity in cash-rich technology funds has shown reduced aggression, contrasting with the elevated trading volumes observed in the prior week.
To run this back-test I need to translate your idea into precise, machine-readable rules. Below are the main parameters I suggest we assume (you can approve or modify any of them): 1. Universe • All U.S. common stocks that have been listed for at least 30 trading days. 2. Daily selection rule • Each trading day rank the universe by the prior day’s dollar trading volume (volume × close price). • Go long the top 500 names, equal-weighted. 3. Trade execution • Enter at the next day’s open and exit at that same day’s close (≈ 1-day holding period). 4. Rebalance / turnover • Re-run the screen every trading day; positions are closed after one session, so there is no overlap. 5. Dates • From 2022-01-03 (first trading day of 2022) through today (2025-10-10). 6. Frictions • Assume zero commissions and slippage (we can add these later if you like).
Hunt down the stocks with explosive trading volume.

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