[U.S. Stock Market Pre-Market: Storage Chip Stocks Decline Across the Board] BlockBeats News, October 15, U.S. stock market pre-market, storage chip stocks declined across the board, SK Hynix fell about 6%, Western Digital fell about 4%, SanDisk fell about 5%, Micron Technology fell about 4%, Seagate Technology fell about 4%. TSMC fell about 2% after the company released its third-quarter financial report.