U.S. optical communications stocks broadly advanced on Aug. 25, with Marvell Technology rising 6.22%, Coherent 5.09%, Applied Optoelectronics 3.94%, Nokia 3.16%, Lumentum 2.83%, the Roundhill optical module ETF 2.64% and Corning 1.61%, according to BIT (Bit.com) data cited by BlockBeats. In Aug. 27 premarket trading, optical-module stocks also gained, led by Applied Optoelectronics at 5.40%, while storage stocks rose between 4.46% and 4.95%.