US optical communication stocks rallied Monday, with traders pointing to a multi-year demand cycle driven by artificial intelligence, data center upgrades, and 5G network construction.
The move signals growing investor conviction in the hardware required to transmit massive datasets, a critical bottleneck for AI development. "Moving to higher speeds and co-packaged optics introduces severe signal integrity issues," one sector analyst noted, emphasizing that testing and measurement must scale directly with optical complexity.
Gains were broad across the sector on May 19. AXT Inc. (AXTI) jumped nearly 7 percent, while Astera Labs (ALAB) and Maxlinear (MXL) both climbed over 4 percent. Other notable movers included Ciena (CIEN), which rose more than 3 percent, and Lumentum (LITE) and Credo Technology (CRDO), which both gained over 2 percent.
The rally builds on strong underlying fundamentals for many companies in the space. Viavi Solutions (VIAV), a leader in test and measurement, saw its revenue jump 42.8% year-over-year in its most recent quarter, driven by strong demand from data centers and the acquisition of Spirent’s product line. Lumentum, another key player, has seen its stock rise 163% in 2026, attracting investment from major funds like Tiger Global. This underscores a massive, overlapping super-cycle for the technology needed to prevent data transfer bottlenecks.
This article is for informational purposes only and does not constitute investment advice.
