NVIDIA Shares Plunge 0.67 as $25.65 Billion Trade Volume Ranks Second in Market Activity

Nvidia closed on October 3, 2025, with a 0.67% decline in share price as trading volume reached $25.65 billion, ranking second in market activity for the day. The stock's performance reflected mixed signals from industry dynamics and investor positioning amid evolving sector trends.

Recent developments highlighted a shift in market focus toward broader semiconductor sector consolidation and regulatory scrutiny. Analysts noted that while Nvidia maintains dominance in AI chip innovation, short-term volatility remains tied to macroeconomic factors and competitive landscape shifts. Institutional positioning data showed reduced open interest in leveraged ETFs, suggesting caution among speculative traders ahead of potential earnings releases.

Back-testing parameters require clarification to evaluate the strategy's viability: The universe definition must specify whether the top-500-by-daily-volume list is drawn from all U.S.-listed stocks or limited to S&P 500 constituents. Portfolio handling will need to approximate equal-weight returns through a custom index file or test on an ETF like RSP. Trade mechanics specifications—including execution timing and transaction cost assumptions—are critical for accurate performance simulation. Once these parameters are finalized, the back-test can proceed from January 1, 2022, to the current date.