U.S. stock market midday update: System1's stock price soared 12.61%, trading volume surged, and sector trends have attracted market attention?

U.S. Stock Market Midday Update System1, up 12.61%, with increased trading volume and no significant news recently. Trading is active, with clear capital flows. Considering sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation. Stocks with High Trading Volume in the Industry Google-A down 2.32%. Based on recent news, On December 11, the European Union launched an antitrust investigation into Google, focusing on whether its use of publisher and YouTube creator content in AI model training violates competition rules. This news raised market concerns, leading to a drop in stock price. On December 11, reports indicated that if SpaceX goes public in 2026 with an estimated valuation of about $1.5 trillion, Alphabet's stake as an early investor would be worth approximately $111 billion, but the market reacted lukewarmly to this news, causing a 1.8% drop in stock price. On December 10, analysts pointed out that Google's technological advantage and business upgrades in the generative AI field will drive future profits, but in the short term, the market remains cautious about the regulatory risks it faces, affecting stock performance. Competition in the AI industry is intensifying, and regulatory risks are rising. Meta up 0.19%, with increased trading volume. Based on recent key news: On December 11, Morgan Stanley lowered Meta's target price to $750 while maintaining an overweight rating. This move reflects market concerns about Meta's future operating expenses, leading to stock price volatility. On December 10, Meta is considering cutting its metaverse budget by up to 30%. This news has drawn market attention to Meta's strategic adjustments, impacting stock price trends. On December 10, Meta CEO Mark Zuckerberg is pushing the company's strategy towards AI models that can be directly monetized. The new model "Avocado" is expected to be released in spring 2026, which may affect the company's future profitability. The U.S. tech industry is rational, and AI remains a key driver. Google-C down 2.19%, with increased trading volume. Based on recent news, On December 10, the European Union announced an antitrust investigation into Google, focusing on assessing whether its use of online publisher content in training AI models violates competition rules. This news raised market concerns about Google's future AI layout in the European market, leading to a drop in stock price. On December 11, sources revealed that Google may face hefty fines from the EU due to its app store's failure to comply with EU fair competition regulations. This news further exacerbated market concerns about Google's regulatory risks, putting continued pressure on the stock price. On December 9, M&A activity in the U.S. tech industry rebounded to its highest level since 2021, with Google acquiring cybersecurity startup Wiz for $32 billion. Despite the increase in M&A activity, the market remains vigilant about Google's regulatory risks, affecting stock performance. M&A activity in the tech industry is increasing, and regulatory risks are rising Stocks Ranked Among the Top by Market Capitalization in the Industry Reddit fell 1.04%. Based on recent key news: On December 10, Reddit announced a limited internal testing of verified profiles, and the market had mixed reactions to the new feature, causing stock price fluctuations. On December 9, Reddit experienced outages in the United States, preventing users from accessing the website, which affected user experience and put pressure on the stock price. On December 11, Jefferies raised Reddit's target price to $325, with analysts holding an optimistic view on the company's future performance, providing support for the stock price. Increased competition in the social media industry needs attention