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On Sept. 19, 2025, , ranking 323rd in market activity. The selloff followed mixed signals from earnings reports and sector rotation trends observed in the financial services sector.
Analysts noted that the decline aligned with broader market rotation away from toward defensive assets. Institutional selling pressure emerged as faced profit-taking after a three-week rally. Position unwinding in leveraged loan portfolios also contributed to the downward momentum, .
To run this back-test properly I need to clarify a few practical details, because the engine we use models one security (ticker) at a time and then aggregates results. 1. Universe and data source • Do you want the whole U.S.
(≈ 8 000 tickers) to be screened each day, or a narrower list (e.g., S&P 500 constituents)? • Is it acceptable to use U.S. primary-listed common stocks only and exclude ETFs, ADRs, preferreds, etc.? 2. Pricing convention • Enter at today’s close and exit at tomorrow’s close (standard for a 1-day hold)? • Equal-weight each position? (default) 3. Output format • The engine will summarise the daily portfolio return series (CAGR, max drawdown, Sharpe, etc.) and show an . Is that what you’re looking for? Once I have those points I’ll generate the (top-500-by-volume each day), feed them into the back-test engine, and show you the results.Hunt down the stocks with explosive trading volume.

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