Amphenol Rises 17% Year to Date, Zacks Rates Hold

ClearBridge Investments named Arista Networks as a leading contributor in its third-quarter 2026 commentary for its Large Cap Growth Strategy, citing solid execution and new customer scaling. The firm said Arista was a positive outlier among AI infrastructure names and raised full-year guidance in its latest update, easing concerns created by earlier supply constraints and uneven revenue trends. Arista Networks closed at $215.36 per share on October 6, 2026, returning 11.63% over the past month and 64.36% over the past year, with a market capitalization of $271.62 billion and a 52-week range of $114.52 to $216.07. The ClearBridge Large Cap Growth Strategy outperformed its Russell 1000 Growth Index benchmark, which gained 0.9%, while the Russell 1000 Value Index rose 2.6%. According to the firm's database, 91 hedge fund portfolios held Arista Networks at the end of the second quarter, up from 85 in the previous quarter.

Arista Networks announced its open Ethernet rack-scale portfolio for high-density scale-up and scale-out AI infrastructure, engineered in partnership with AMD, Arm, Broadcom, d-Matrix, Meta, Microsoft, and Qualcomm. The offering introduces Etherlink SU-144, an Ethernet-based scale-up architecture that expands unified computing domains up to 144 accelerators in a single-hop network and scales to 1,024 XPUs through cross-rack topologies, across three physical form factors: an orthogonal chassis, a cabled backplane, and a cross-rack system. The scale-out fabric, built on a common Netdi foundation, supports scale-up protocols including ESUN, Nvidia's NVLink, NVLink Fusion, and PCIe, and incorporates Ultra Ethernet Consortium standards, Multipath Reliable Connection fabric resiliency, multi-plane routing, and Dynamic and Cluster Load Balancing. Rack designs feature multiple liquid-cooled 7060EX7 switches with 102.4 Tbps capacity per switch, fiber patch panels, integrated liquid-cooling manifolds, drip trays with active leak detection, rack management controllers, and power shelves with Backup Battery Units. Full integration of switches, optics, liquid cooling, and rack control with next-generation optics such as XPO and open CPO/NPO raises rack capacity from 1.6 Pb/s with today's OSFP-based switches to 6.5 Pb/s, translating to nearly a 50% reduction in overall data center footprint.

Ciena Corp. rebounded as much as 14.3 percent in intraday trading on Tuesday to $445.36 apiece, helped by peer Marvell Technology's growth outlook for the optical interconnects sector. At its recent Investor Day, Marvell said it expects the industry to grow by 60 to 70 percent to about $65 billion through 2030, with switching and storage alone reaching $85 billion, or a compounded annual growth rate of 40 percent. Those figures were markedly higher than Ciena's own 30 percent growth outlook for its business by 2029. Bernstein initiated coverage with an outperform rating and a $440 price target, acknowledging near-term supply constraints but calling the stock undervalued, while Evercore maintained an outperform rating and a $550 price target, citing optimism that Ciena can achieve more than $25 in earnings per share. Hedge fund holders in Ciena rose to 81 in the second quarter from 73 in the first, with combined holdings up 2 percent to $3.997 billion from $3.913 billion quarter-on-quarter.

Astera Labs shares have climbed 117.8% year to date, outpacing the broader Zacks Computer & Technology sector's 24.2% gain and the Zacks Internet - Software industry's 7.1% growth, as well as peers Cisco Systems and Credo Technology, which rose 46.5% and 47.7% respectively. The company guided third-quarter 2026 revenues to between $540 million and $560 million, with the midpoint implying roughly 40% sequential growth, while management projected non-GAAP earnings of $1.16 to $1.21 per share. The Zacks Consensus Estimate for third-quarter revenues stands at $550.39 million, up 138.71% year over year, and the consensus earnings estimate of $1.19 per share implies a 142.86% year-over-year increase. In the second quarter of 2026, PCIe 6 products including the Scorpio AI Fabric Switches and Aries Retimers accounted for more than 50% of total revenues, and the Leo CXL memory controller line has won new design wins at major U.S. hyperscalers with volume shipments expected in 2027. Astera Labs faces rising competition from Marvell Technology, whose data center revenues represented 79% of total revenues in the second quarter of fiscal 2027, and its shares trade at a forward 12-month Price/Sales of 22.66X versus the Computer & Technology sector's 6.18X, with a Zacks Rank #3 (Hold).

Marvell Technology is expanding its partnership with Nvidia across advanced networking, silicon photonics and optical interconnect technologies, with Nvidia investing $2 billion in Marvell as part of the March 2026 agreement. The collaboration began in 2025 to give hyperscalers more flexibility in building custom AI computing infrastructure, and was expanded in 2026 to connect Marvell to Nvidia's AI factory and AI-RAN ecosystems through NVLink Fusion. Under the expanded arrangement, Marvell will supply custom XPUs and NVLink Fusion-compatible scale-up networking, while Nvidia provides Vera CPUs, ConnectX NICs, BlueField DPUs, NVLink interconnects, Spectrum-X switches and rack-scale AI compute. Marvell also worked with Microsoft and Utimaco to launch Azure Payment HSM v2, a cloud-native payment security platform built on Marvell's LiquidSecurity hardware security modules, with Utimaco contributing Atalla Payments Module software and Microsoft providing Azure. Marvell competes with Astera Labs and Broadcom in networking, and its shares have gained 239.5% year to date, trading at a price-to-sales multiple of 14.78X versus the Zacks Electronics - Semiconductors industry's 5.15X, while the Zacks Consensus Estimate for fiscal 2027 earnings implies year-over-year growth of 48.2%.