Amphenol's Trading Volume Plummets 47% to Rank 267th Amid 0.37% Gains

Generated by AI AgentVolume Alerts
Thursday, Oct 9, 2025 7:34 pm ET1min read
Aime RobotAime Summary

- Amphenol (APH) saw 47.19% lower trading volume on Oct 9, 2025, ranking 267th in U.S. equity activity.

- Despite the volume drop, APH closed with a 0.37% price increase for the session.

- A "top-volume 500" strategy requires defining stock universe, trade timing, position sizing, and frictional cost parameters before back-testing.

On October 9, 2025, , , ranking it 267th in trading activity among U.S. equities. .

To construct the 1-day “top-volume 500” strategy precisely as specified, several practical parameters must be defined prior to executing the back-test:

1. Stock universe: • All U.S. listed common stocks (NYSE + NASDAQ + AMEX)? • Only large-cap names (e.g., S&P 1500)? • Another universe?

2. Trade timing convention: • Buy at today’s close → sell at tomorrow’s close, or • Buy at tomorrow’s open → sell at tomorrow’s close? (Either approach is common; please specify.)

3. Position sizing: • Equal weight across the 500 names each day (default)? • Value-weighted or volume-weighted?

4. Frictional costs: • Ignore commissions/slippage (default), or • Include a per-trade cost assumption? (If yes, please specify.)

Once these four parameters are established, the daily trade list can be generated, and the back-test can be run from January 3, 2022, (the first trading day of 2022) to the latest close.

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