Recently, while watching the Taiwan stock market, I noticed a quite interesting phenomenon. As AI computing power demands spill over from data centers to various end devices, coupled with the full-scale launch of the BEAD program in the United States, the networking concept stock group has suddenly become especially hot. To be honest, this is no longer the traditional impression of "drawing lines, installing Wi-Fi routers."

I took a closer look at the industry chain and found that the scope of networking concept stocks is much broader than I imagined. From the bottom layer of fiber optic cables and base station components, to mid-tier switches and routers, and now to the hottest Wi-Fi 7 share routers and low-earth orbit satellite receiving equipment, the entire supply chain is tightly interconnected. The key point is that the year 2026 is particularly critical because traditional copper wire transmission has become a bottleneck for system performance, and optical communication technology has officially become the main solution for large-scale data transmission.

Looking upstream, networking chips and optical communication components are the most profitable parts, with the highest technical barriers. Companies like Broadcom and MaxLinear control the lifeblood of networking chips. Silicon photonics materials are the hottest technology in 2026, capable of shrinking module size and reducing power consumption. United Microelectronics Corporation (UMC) is doing quite well in this area.

The midstream part is Taiwan’s strong suit. The representative of the networking concept stocks here is leading companies like ZTEK, which specializes in data center switches and holds a leading position in the 800G market. Qisda’s product lines are also quite diverse, covering Wi-Fi 7, vehicle networking, and low-earth orbit satellite supply chains. StarLight focuses on high-end optical transceiver modules, and with technological upgrades, its performance remains quite steady.

The downstream demand side is also very important. Amazon and Google, as the largest cloud service providers, are major buyers. US telecom operators like AT&T and Verizon are also pushing forward 5G infrastructure and fiber-to-the-home. The most direct source of orders is the US BEAD plan, which has a scale of $42.5 billion, allowing direct procurement of infrastructure equipment.

On the US stock side, there are several companies worth paying attention to. Arista Networks leads in cloud networking equipment, with clients including tech giants like Meta and Microsoft. Broadcom controls the core of networking chips; whether Wi-Fi 7 chips or switch chips, they are very critical. Corning, as the global leader in fiber optic materials, benefits from US manufacturing policies and almost monopolizes broadband construction. Lumentum’s breakthroughs in optical components have made it a dark horse in this wave of AI optical communication boom.

However, investing in networking concept stocks also requires awareness of several risks. Government procurement funding is slow and highly scrutinized; performance is recognized in batches rather than all at once, which can affect stock prices. Technological upgrades are also a tough test; second-tier manufacturers that cannot meet CPO thresholds may be marginalized. Inventory cycles should also be watched carefully—if data center construction slows down, networking companies will face high inventory pressure. Geopolitical risks cannot be ignored either; the BEAD plan requires a certain proportion of US manufacturing, so Taiwanese companies must set up overseas factories to win bids, increasing costs. Lastly, valuation issues are important—many stocks have PE ratios pushed to historic highs due to the "AI neural network" label, so beware of the risk of overvaluation correction.

Overall, by 2026, networking concept stocks driven by AI transmission and US infrastructure initiatives are indeed a promising main line. But it’s advisable to focus on leading companies with high technical barriers, avoiding chasing high prices on stocks that only have themes but lack fundamentals. At the same time, closely monitor the progress of government funding and inventory changes to find real investment opportunities within this wave of networking concept stocks.