[U.S. storage sector opens sharply lower, Western Digital drops over 7%] BlockBeats news, October 13, according to BIT (bit.com) market data, U.S. stock market opened with the Dow Jones up 0.47%, S&P 500 index down 0.14%, and Nasdaq down 0.38%. The storage sector opened sharply lower, with Western Digital (WDC.O) and Seagate Technology (STX.O) plunging over 7%, SK Hynix (SKHY.O) and Micron Technology (MU.O) dropping over 5%, and SanDisk (SNDK.O) down 4.6%.