US Stock Market Close: Memory, optical communications, and NeoCloud sectors rally across the board; SK Hynix surges 13.3%

On October 29, BIT stock platform data showed: All three major U.S. indices closed higher—the Dow Jones Industrial Average rose approximately 0.19%, the S&P 500 rose approximately 0.28%, and the Nasdaq Composite rose approximately 0.27%; the VIX fear index fell approximately 4.22% to 16.78.
Regarding individual stocks, SpaceX (SPCX) fell approximately 2.25%; the optical communications sector as a whole strengthened, with Applied Optoelectronics (AAOI), Lumentum (LITE), Ciena (CIEN), Credo (CRDO), and Coherent (COHR) rising approximately 6.85%, 5.52%, 3.43%, 3.74%, and 1.61%, respectively; among NeoCloud-related stocks, CoreWeave (CRWV), Nebius (NBIS), and Astera Labs (ALAB) posted the largest gains—approximately 7.32%, 6.96%, and 3.67%, respectively; most semiconductor stocks rose, with Arm (ARM), Marvell (MRVL), AMD, Broadcom (AVGO), Intel (INTC), ASML, and TSMC (TSM) rising approximately 4.10%, 3.32%, 3.24%, 2.77%, 1.91%, 1.67%, and 0.60%, respectively, while NVIDIA (NVDA) edged down approximately 1.17%; memory stocks performed strongly, with SK Hynix (SKHY) surging 13.3%, and Micron (MU), SanDisk (SNDK), and Western Digital (WDC) rising approximately 5.86%, 7.66%, and 4.08%, respectively; cryptocurrency-related stocks diverged significantly, with MicroStrategy (MSTR), MARA, Bitmine (BMNR), and Coinbase (COIN) rising approximately 2.66%, 3.67%, 2.15%, and 0.76%, respectively, while Robinhood (HOOD) fell approximately 3.31%.