[Pre-market Broad Gains in U.S. Optical Communication and Storage Sectors] BlockBeats News, October 19, according to BIT (Bit.com) market data, U.S. pre-market optical communication sector stocks broadly rose, including: Coherent up 3.49%, Marvell Technology up 3.25%, Lumentum up 3.15%, Corning up 2.90%, Broadcom up 2.13%. The storage sector also saw broad gains, including: SK Hynix up 3.60%, SanDisk up 3.44%, Micron up 2.40%, Seagate Technology up 2.18%, Western Digital up 2.03%.