<div id="readability-page-1">01:44 PM EST, 12/17/2025 (MT Newswires) -- Tech stocks were lower Wednesday afternoon, with the State Street Technology Select Sector SPDR ETF (XLK) falling 1.7% and the State Street SPDR S&amp;P Semiconductor ETF (XSD) dropping 2.2%.The Philadelphia Semiconductor index slumped 3.3%.In corporate news, Alphabet's (GOOG) Google ( GOOG ) is working on a new project to make its AI chips better at running Meta Platforms ( META )-backed (META) PyTorch, the most widely used AI software framework, in an attempt to erode Nvidia's ( NVDA ) dominance in the AI computing market, Reuters reported. Alphabet shares were down 2.3%, Meta was steady, and Nvidia ( NVDA ) fell 3.2%.Amazon.com ( AMZN ) is in talks to invest at least $10 billion in OpenAI in a deal that potentially values the company at over $500 billion, news outlets reported late Tuesday. Amazon ( AMZN ) shares rose 0.3%.Roblox ( RBLX ) is prepared to make changes to some of its features after Russian watchdog Roskomnadzor imposed a ban on the platform earlier this month over child safety issues, Reuters reported Wednesday. Roblox ( RBLX ) shares were down 1%. MT Newswires does not provide investment advice. Unauthorized reproduction is strictly prohibited.</div>

罗布乐思

科技股在周三下午下跌，主要的 ETF 和指数均出现下滑。Alphabet 的 Google 正在努力改进 AI 芯片，以支持 Meta 的 PyTorch，挑战 Nvidia。亚马逊正在洽谈向 OpenAI 投资 100 亿美元。罗布乐思在俄罗斯禁令后进行调整。Alphabet、Nvidia 和罗布乐思的股票下跌，而亚马逊的股票上涨

行业更新：科技股在周三下午下跌