I’ve been closely tracking the developments in networking-concept stocks recently, and I’ve found that this industry has truly reached a turning point in 2026.

To be honest, in the past, networking stocks were basically about stringing cables and installing Wi‑Fi. But things are completely different now. The U.S. BEAD program has finally entered its full-scale construction phase, and the $42.5 billion in funding is beginning to flow into the procurement of infrastructure equipment in earnest. At the same time, AI computing has spilled over from the cloud to the edge, and optical communications technology has shifted from the margins to becoming a system-wide bottleneck solution. With these two forces stacked together, networking-concept stocks have moved from “traditional communications” to the core of an “AI transmission architecture.”

I took a look at several leading stocks on the Taiwan market. Zyfon has an almost unshakeable position in the 800G switch market, and it’s already laying out 1.6T specifications—making it one of the most direct beneficiaries of the AI data center construction boom. A-Lian’s deep moat in silicon photonics technology should pay off in 2026, as it benefits from the broader environment of “optics moving in while copper moves out.” Qiqi is interesting: its product lineup is incredibly diversified, covering Wi‑Fi 7, satellite communications, and vehicle connectivity, and it directly connects to the infrastructure demand of the BEAD program. HwaStar Optics, meanwhile, is seeing steady growth amid the upgrade wave from 400G to 800G.

We also shouldn’t ignore the U.S. stock market. Arista Networks’ performance in the AI era even surpasses that of traditional giants like Cisco. Its low-latency network solutions specifically designed for AI training are right on the bandwagon. Broadcom holds the key to networking chips—ranging from Wi‑Fi 7 to switches and customized AI chips—and its potential in 2026 shouldn’t be underestimated. Corning, driven by the BEAD program’s requirements for domestic fiber optic capacity, has nearly monopolized the supply of fiber for U.S. broadband construction. Lumentum, with its technological breakthroughs in optical components and CPO, has become a dark horse in this wave of AI optical communications.

However, investing in networking-concept stocks also comes with several pitfalls. Government tender and project funding is slow and reviews are strict. Many companies’ results aren’t realized in one sudden surge, but recognized in batches; if the review process gets stuck, you can end up with the awkward situation of “a hot theme but no money showing up in the financials.” Technology upgrades are a tough test—second-tier manufacturers that can’t meet the CPO threshold may get pushed to the sidelines. You also need to closely monitor inventory cycles. Once major customers like Amazon and Google have high inventory levels, or if the Wi‑Fi 7 replacement cycle doesn’t meet expectations, networking companies will face significant inventory pressure.

Geopolitics is another variable. BEAD requires a certain proportion of U.S. manufacturing. For Taiwanese companies to secure tenders and set up overseas factories, this will increase management and tax costs. If U.S.–China relations fluctuate, supply-chain stability directly affects gross margins. Valuation is also very real: because many networking stocks are labeled as “AI neural networks,” their price-to-earnings ratios have already been pushed to historical highs. As long as revenue growth is just slightly below expectations, they’re likely to see significant corrections.

Overall, in 2026, networking-concept stocks look genuinely promising as a main theme driven by the dual engines of AI transmission and U.S. infrastructure. But my advice is to focus on those leading companies that have real technological barriers—don’t chase stocks whose only strength is the theme but lack solid fundamentals. At the same time, closely monitor tender funding progress, changes in inventory, and whether year-over-year revenue growth can support today’s elevated valuations. That’s how you avoid winning less-than-expected returns on the index while suffering losses on the spread.