Svmuu News: According to data from MSX.COM, U.S. stock market memory chip stocks are trading lower, with SanDisk and Micron. falling more than 6%, and Western Digital and Marvell Technology falling more than 4%.ON Semiconductor fell more than 17% after announcing plans for a $6.2 billion all-stock acquisition of chip designer Synaptics. The optical communications sector opened lower across the board. Lumentum and Coherent fell more than 7%, while Marvell Technology and Credo fell more than 5%, and Corning fell nearly 3%.