ASML Shares Surge 3.63% on $1.96B Volume, Jumps to 54th in Market Activity as Investor Confidence in Lithography Dominance Rises

ASML shares surged 3.63% on October 1, 2025, with a trading volume of $1.96 billion, a 55.6% increase from the previous day, ranking it 54th in market activity. The stock’s performance was driven by renewed investor confidence in its semiconductor lithography dominance amid ongoing global chip demand trends.

Recent developments highlighted ASML’s strategic positioning in the semiconductor supply chain. Analysts noted that the company’s next-generation EUV systems remain critical for advanced node manufacturing, with key clients maintaining long-term procurement agreements. Supply chain resilience and R&D progress in high-numeric-aperture technology were cited as foundational factors for sustained investor interest.

To run this back-test accurately, I need to settle a few practical details first: Universe definition—Do we look at all U.S.–listed common stocks (NYSE + NASDAQ + AMEX) each day, or a narrower group (e.g., S&P 500 constituents)? Ranking / rebalancing moment—Should the “top-500 by volume” list be built with the same-day close data and positions opened at that close, or with yesterday’s data and positions opened at today’s open? Trade mechanics—Equal-weight the 500 names each day? Ignore transaction costs/slippage, or apply an estimate? Price used for entry/exit—Close-to-close (buy at today’s close, sell at tomorrow’s close) is the most straightforward. Once these items are set, I’ll retrieve daily volume data for the chosen universe from 2022-01-03 to 2025-10-01, generate a daily list of the 500 highest-volume names, build one-day-hold signals, and feed them to the back-test engine. The equity curve and key stats (CAGR, vol, max drawdown, Sharpe, etc.) will then be visualized. Default assumptions include all U.S. common stocks, same-day volume ranking, close-to-close trading, equal-weighting, and no transaction costs. Confirm if these align with your preferences or specify adjustments.