U.S. stocks opened flat, with the Dow Jones Industrial Average flat, the S&P 500 up 0.19%, and the Nasdaq Composite up 0.28%. Seagate Technology (STX.O) fell 3.8% after Morgan Stanley lowered its target price. Boston Scientific (BSX.N) fell 6.3% after the company lowered its annual profit forecast. Most storage and optical communication stocks rose, with SK Hynix (SKHY.O) up 8.6%, Micron Technology (MU.O) up 3.8%, and Corning (GLW.N) up 1.9%.