Optical communication concept stocks rebounded sharply: Marvell Technology surged over 11%, Astera Labs and Applied Optoelectronics rose more than 9%, POET Technologies and Corning climbed over 7%, Coherent was up nearly 6%, and Nokia increased nearly 3%.

On the news front, Marvell Technology has been included in the S&P 500 Index, effective at the opening of the US stock market on June 22 (Monday). In addition, Amazon and Corning announced on Monday that they have reached a multi-year agreement worth several billion US dollars. Corning will produce fiber optic products for Amazon's continuously expanding data center infrastructure across the United States and strengthen the domestic supply chain in the US. (Gelonghui)