[U.S. Optical Communication Sector Leads Market Gains at Open, Optical Module ETF LYTE Up 3.53%, MRVL Up Over 5%] BlockBeats News, August 17, according to BIT ((bit.com)) market data, the U.S. optical communication sector led the market gains at the open, with the following performance: Roundhill Optical Module ETF (LYTE) up 3.53%; Pure Photonics ETF FOTO up 0.73%; Corning (GLW) up 1.34%; Coherent (COHR) up 3.54%; Marvell Technology (MRVL) up 5%; LITE (Lumentum Holdings) up 0.7%; CIEN (Ciena Corporation) up 0.75%.