2026-09-15 13:35:01
U.S. Stock Indices Open Lower; Optical Communications Stocks Rally, Coherent Gains 4%
U.S. stock indices opened lower on September 15, with the Dow down 0.2%, the S&P 500 down 0.1%, and the Nasdaq down 0.15%. Optical communications stocks surged broadly, including Coherent up 4%, Marvell Technology up 2%, Corning up 2%, Credo up 2%, and Lumentum up 2%. Memory chip stocks also