[The Three Major U.S. Stock Indexes Closed Lower, with Optical Communication and Memory Chip Sectors Leading Declines] The three major U.S. stock indexes closed lower: the Nasdaq fell 0.92%, the S&P 500 dropped 0.77%, and the Dow Jones declined 0.67%. The optical communication and memory chip sectors led the declines, with ARM down over 8%, Qualcomm down over 7%, Intel and SK Hynix down over 5%, and Meta and Coherent down more than 4%. SanDisk, AMD, and Marvell Technology fell over 3%. Gold mining stocks broadly declined, with Gold Fields down over 12%, Harmony Gold down over 6%, Agnico Eagle Mines down over 5%, Newmont Corporation and Pan American Silver down over 4%, and Kinross Gold down over 3%. NVIDIA rose over 1% after the company announced an increase of $150 billion in its stock repurchase authorization. MongoDB Inc. fell over 18%, marking its worst single-day performance since March.