Pre-market: US Stock Market Optical Communication Sector Significantly Affected, COHR, MRVL Down Around 5%

BlockBeats News, August 18th, according to BIT (bit.com) market data, the US stock pre-market optoelectronics sector experienced significant losses, including:

Roundhill Photonic ETF (LYTE) down 4.3%;

Pure Photonic ETF FOTO down 4.2%;

Corning (GLW) down 4.48%;

Coherent (COHR) down 5.76%;

Marvell Technology (MRVL) down 4.7%;

LITE (Lumentum Holdings) down 4.52%;

CIEN (Ciena Corporation) down 3.2%.