Network Hardware Emerges as a Fresh Leadership Pocket

Networking and optical names are moving from the sidelines into leadership. Recent market data show Communication Equipment climbing the industry ranks with broad participation, better volume, and a growing number of highs. That combination suggests buyers see durable demand behind cloud and edge build-outs, not a one-off squeeze.

Within the group, strength is not confined to one niche. Connectivity silicon in $CRDO Credo Technology Group Holding Ltd $239.18 , enterprise switching and cloud management at $EXTR Extreme Networks, Inc. $31.51 , test and measurement at $VIAV Viavi Solutions Inc. $50.10 , and radio-frequency components at $KN Knowles Corporation $40.33 all have fresh catalysts tied to AI networking, faster Ethernet, and 5G. The focus below is on what changed, why it matters, and what could rebut the case.

Credo Technology: AI data center interconnects are the pull

$CRDO Credo Technology Group Holding Ltd $239.18 is a pure play on high-speed Ethernet plumbing for AI clusters. Recent figures show the stock up 50.7% in a month and 120.4% in three months, with revenue up 205.7% year over year, pointing to real demand rather than sentiment alone. The company’s portfolio spans active electrical cables, optical digital signal processors (DSPs, chips that clean up and process signals), SerDes (serializer/deserializer chips that convert data between parallel and serial forms) and interconnect IP aimed at 400 gigabit and 800 gigabit links, with a roadmap to 1.6 terabits per second.

In its latest annual report, Credo highlights innovations that align directly with hyperscaler needs, including the introduction of an 800 gigabit DSP for linear-receive optics used in optical modules, SerDes chiplets for multi-chip modules, and the OmniConnect memory fabric (a way to move data between accelerators and memory more efficiently). Those product vectors tie the business to near-term 800 gigabit deployments and the transition to 1.6 terabit infrastructure. According to the annual filing summarized by StockTitan, the company’s customer collaborations span hyperscale data centers and telecom equipment makers.

Extreme Networks: AI-powered cloud networking demand

$EXTR Extreme Networks, Inc. $31.51 has pivoted from a niche campus-switching vendor toward AI-assisted cloud management at scale. Shares printed a new 52-week high in the latest session and are up 118.6% in three months. The company’s March 10 preview for its Connect 2026 conference put AI front and center, featuring the Platform ONE all-in-one AI networking stack and hands-on labs for automation and analytics.

The message from management is that customers want simpler, more automated networks to support a surge in connected devices and applications. That narrative, paired with price leadership, is attracting buyers. What could disprove it is an air pocket in enterprise spending or execution risk shipping and monetizing Platform ONE beyond the event buzz.

Viavi Solutions: Testing the AI fabric

High-speed networks do not scale without rigorous validation. $VIAV Viavi Solutions Inc. $50.10 ’s price has surged 80.3% in three months and 203.3% year to date, while the company is positioning its test platforms squarely at AI fabrics and next-generation optics. Viavi said it will showcase 1.6 terabit Ethernet, silicon photonics, PCIe (Peripheral Component Interconnect Express, the server-to-accelerator interface) over optics and automated test at OFC 2026 (the optical industry’s flagship trade show), with demonstrations built on its ONE LabPro and TestCenter platforms.

Beyond the trade-show framing, Viavi also offers 800 gigabit modules in its ONT platform, supporting current-generation Ethernet rollouts in labs and in manufacturing. If AI networking pilots slow or interoperability pain diminishes faster than expected, demand for the highest-end test gear could normalize from recent peaks.

Knowles: RF components for 5G and defense

$KN Knowles Corporation $40.33 has less headline buzz than AI switch makers, but the Precision Devices unit is a quiet beneficiary of denser radios and tougher requirements. Shares set a new 52-week high and are up 93% year to date. The investor overview emphasizes high-performance capacitors and RF filtering products across aerospace, defense, industrial and communications. Its 5G mmWave (millimeter-wave) portfolio includes FR2 bands at 26, 28 and 39 gigahertz with more than 50 decibels of rejection (blocking unwanted signals), built for compact, temperature-stable designs.

That product mix maps to continued 5G densification, defense communications and industrial wireless. The near-term question is whether program timing stays favorable after such a strong run. Any pushouts in defense or carrier budgets could cool momentum.

How to use this pocket of leadership

This group’s strength has come with higher volatility and crowded trades. Several names have moved far, fast, and can be sensitive around earnings, macro prints and hyperscaler capex headlines. For investors building watch lists, focus on names that pair price leadership with concrete catalysts, then let price and volume confirm entries rather than guessing at tops or bottoms.