ClearBridge Flags Arista Networks as Q3 Standout on Raised Guidance

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.

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%.

Arista Networks raised its 2026 revenue guidance to US$12.60 billion, including at least US$3.50 billion from AI-related business, after reporting second-quarter fiscal 2026 revenue of US$3.00 billion, a 37.7% year-over-year increase. The higher outlook underscores how AI-driven cloud networking has become a central revenue pillar for the company, shaping its growth mix across hyperscale and enterprise customers. Arista was also added to the S&P 100 in September 2026, a move that reflects its growing weight in large-cap U.S. equity indices just as management ties more of its outlook to AI-related revenue. The company's longer-range narrative projects US$21.4 billion in revenue and US$8.2 billion in earnings by 2029, requiring 26.6% yearly revenue growth and an earnings increase of about US$4.2 billion from US$4.0 billion today. Some of the lowest-ranked analysts had already assumed about US$18.6 billion of 2029 revenue and US$6.9 billion of earnings before this guidance, illustrating how differently Arista's AI exposure and long-term supply commitments can be read.