Applied Materials Slumps 3.67% as $570M Volume Ranks 212th in U.S. Market Activity

On September 25, 2025, Applied Materials (APLD) closed down 3.67% with a trading volume of $570 million, ranking 212th in market activity across U.S. equities. The stock’s decline occurred amid mixed sector performance and limited catalysts in the equity market.

Analysts noted that APLD’s underperformance aligned with broader semiconductor industry volatility, though no company-specific announcements directly attributed to the move were reported. The volume level, while below its 30-day average, indicated moderate institutional activity without clear directional bias in the session.

Strategic back-testing frameworks for APLD would require clarification on key parameters: whether to screen all U.S. equities or focus on S&P 500 constituents, how to define volume rankings (dollar vs. share volume), trade execution timing (intraday vs. overnight), position sizing rules, and inclusion of transaction costs. These variables significantly impact historical strategy outcomes.

For benchmarking purposes, a frictionless back-test from January 3, 2022, to September 25, 2025, would need explicit preferences on these parameters to generate actionable insights. Default assumptions can be applied if unspecified, but results will vary depending on the methodology chosen.