美股收盘，存储、光通信板块走强

The US stock market closed with strength in the storage and optical communications sectors. According to MSX.COM data, SK Hynix rose over 4%, Micron Technology gained over 3%, and SanDisk advanced over 2%. Additionally, Applied Optoelectronics climbed over 5%, while Lumentum surged over 6%. Walmart shares closed down 9.2%, marking their largest single-day decline since May 2022.