# Listed Optical Communications and Cloud Stocks Fall as Five Health Care Stocks Rise

By Enna Lee

Canonical URL: https://www.tokenpost.com/news/investing/36036
Published: 2026-10-20T22:21:33.000Z
Updated: 2026-10-20T22:21:33.000Z
Section: Investing

> Applied Optoelectronics fell 5.06% in the Oct. 20 snapshot, while IREN declined 4.22%. Merck was unchanged.

U.S. optical communications and cloud computing shares fell in an Oct. 20 market snapshot, while five listed health care stocks gained, showing a split among the companies in those groups.

Applied Optoelectronics fell 5.06%, Coherent dropped 3.67% and Lumentum declined 2.77%. Ciena lost 2.07%, Corning fell 2.02%, Marvell Technology slipped 1.75% and Broadcom edged down 0.25%.

The listed cloud computing stocks also declined. IREN fell 4.22%, Nebius lost 3.16%, CoreWeave declined 2.78%, Applied Digital dropped 2.52% and Oracle fell 1.18%.

Among the six listed health care stocks, five gained and Merck was unchanged. Eli Lilly gained 2.21%, AbbVie rose 1.35%, Johnson & Johnson added 1.15%, Novo Nordisk climbed 1.09% and Moderna gained 0.73%. Merck was unchanged.