[SanDisk, Seagate, Western Digital have dropped more than 30% from historical highs] BlockBeats News, July 7, according to BIT (bit.com) market data, U.S. stocks opened lower and continued to decline on Tuesday's trading day. The Philadelphia Semiconductor Index fell more than 6%, and the storage sector extended its downward trend. Among them, SanDisk has dropped more than 36% from its historical high of half a month ago, Seagate dropped 31% from its high, Western Digital dropped 35%, and Micron dropped 28%.