UBS initiates coverage of Accton Technology Corporation with a Buy rating and a NT$3,400 target price

Overview

This report is UBS's initiation coverage of Accton Technology Corporation (2345.TW). The report argues that the company is an important ODM supplier of data center switches and AI accelerator cards to U.S. hyperscale cloud providers, positioned at the intersection of AI infrastructure expansion, high-speed network upgrades, and rising white-box switch ODM Direct penetration. UBS assigns a Buy rating and a NT$3,400 target price.

Core views

The core views are: first, Accton has strong customer stickiness with its core U.S. CSP clients and is expected to benefit from the proliferation of 800G switches and the ramp-up of Trainium 3 starting from H2 2026; second, the company is re-entering the 800G switch supply chain of a social media customer, which is expected to contribute about 10% of revenue in 2026; third, the shift in network speeds toward 800G, 1.6T, and 3.2T, together with the development of optical transmission technologies such as CPO and OCS, will increase requirements for system design, thermal management, signal integrity, and manufacturing yield, benefiting experienced ODMs; fourth, the company's expansion into higher-value areas such as L11 server rack integration, switch trays, and AI accelerator cards is expected to improve revenue mix and margins.

Analysis framework

The report uses company fundamental analysis, customer and product cycle analysis, industry technology upgrade paths, supply chain research, peer valuation comparison, and a P/E valuation framework, with a focus on Accton's revenue growth, EPS upgrades, and valuation re-rating potential during the AI infrastructure capex cycle.

Methodology notes

• Valuation methodsP/E valuation method

  27x average 2027-28E PE

  UBS uses the average EPS for 2027-2028E and applies a 27x P/E multiple to derive the NT$3,400 target price. This multiple sits in the upper half of the historical 10-31x range and is supported by a roughly 47% earnings CAGR for 2025-2028E.

• Industry cycle analysisAI infrastructure and high-speed network upgrades

  Migration from 400G to 800G/1.6T/3.2T

  By examining network traffic growth, cloud capex, AI server deployment, and the upgrade path for switch speeds, the report concludes that the complexity and ASP of high-speed switch systems will increase, thereby lifting the value content captured by ODM vendors.

• Customer structure analysisCore customer and new customer contribution split

  Core customers contribute about 70% of sales, while the new social media customer contributes about 10% of revenue

  The report breaks down revenue growth into contributions from Trainium and switch upgrades at core U.S. CSP customers, new social media customer wins, and new businesses such as L11 rack integration.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Accton Technology Corporation (2345.TW)

  Research target, Taiwan network equipment ODM and AI accelerator card supplier

  Strengths

  It has deep ODM capabilities, R&D, and testing experience with U.S. hyperscale cloud customers, covering data center switches, AI accelerator cards, switch trays, and L11 rack integration.

  Weaknesses

  Customer concentration is high, with about 70% of 2025 sales coming from a single leading U.S. CSP.

  Comparison

  The report views Accton and Celestica as the main ODM/EMS players for core customers' network switches, and it leads newer entrants such as Alpha Networks, Delta, and Quanta in the white-box network switch market.

  Risks

  Order volatility from core customers, pricing pressure, slower-than-expected technology migration, delays in onboarding new customers, and downside from elevated valuation.

• Data center switches

  An important growth business for Accton, accounting for about 22% of 2025 revenue

  Strengths

  Migration from 400G to 800G, 1.6T, and 3.2T increases system complexity, ASP, and ODM value content.

  Weaknesses

  Switches' share of cloud capex has declined since 2020, and the industry still faces pricing pressure.

  Comparison

  ODM Direct penetration in data center switches is about 15%, below more than 50% for cloud servers and over 40% for storage, leaving room for further gains.

  Risks

  Slower-than-expected adoption of high-speed switches, customers shifting to other suppliers, and ASIC platform changes that delay certification.

• AI accelerator/smartNIC cards

  Accton's largest business, accounting for about 62% of 2025 revenue

  Strengths

  Supported by the Trainium 2, Trainium 3, and Trainium 4 cycles, the report expects Accton to remain a leading supplier as Trainium ramps.

  Weaknesses

  The product line is highly tied to a small number of U.S. cloud customers and proprietary ASIC roadmaps.

  Comparison

  The report notes that hyperscale cloud providers are expanding from NVIDIA GPUs into in-house ASICs, benefiting ODMs with deep custom hardware integration capabilities.

  Risks

  Trainium demand or customer capex could fall short of expectations, ASIC roadmap changes, supply chain constraints, or yield issues.

• L11 server rack integration

  A new business and a potential high-value-added expansion direction

  Strengths

  The company can internally supply switches, switch trays, and AI accelerator cards, and its gross margin may be better than that of pure server rack assemblers.

  Weaknesses

  The revenue share is expected to be only about 1% in 2026, so it is still in an early expansion stage.

  Comparison

  Unlike pure server rack assemblers, Accton's strategy is to serve customers that already buy switches, emphasizing proprietary content and system integration capabilities.

  Risks

  Customer adoption speed, delivery capability, capacity build-out in the U.S. and Taiwan, and the complexity of software loading and testing.

Key data

• Target priceNT$3,400Based on the 2027-2028E average 27x PE.
• RatingBuyUBS initiates coverage with a Buy rating.
• 2026E/2027E EPSNT$76.88 / NT$105.337%/1% above consensus, respectively.
• 2025-2028E EPS CAGR47%Driven by AI accelerator cards, data center switches, and the L11 rack business.
• 2026E/2027E sales growth49% / 30% YoYDriven by Trainium 3, the shift to 800G switches, and new customer wins.
• Core customer revenue shareApproximately 70% (2025)Up from about 40% in 2022, reflecting higher concentration among core customers.
• New social media customer contributionApproximately 10% (2026 revenue)From re-entry into the 800G switch supply chain, with upside potential still in 2027.
• L11 server rack revenue shareApproximately 1% (2026) rising to 8% (2028)The company's target customers are hyperscale cloud clients that already purchase switches.
• AI accelerator card sales mix54%/52% (2026/2027)About 58% in 2025, supported by the Trainium 2/3/4 cycle.
• Cloud capexUS$504bn (2025), up 73% YoY in 2026EFrom UBS cloud capex tracking, reflecting the intensity of AI infrastructure investment.

Impact & implications

If UBS's view plays out, Accton's investment case will expand from a pure switch ODM story to an AI infrastructure system-level value capture story. The 800G and subsequent 1.6T/3.2T upgrades raise the technology barrier, the Trainium family ramp reinforces AI accelerator card growth, and L11 rack integration plus switch tray business increase per-customer content value. On valuation, the report believes the current roughly 25x 2027E PE is about a 10% discount to peers, and if sales and EPS continue to be revised upward, the stock could re-rate further.

Risks

• Customer concentration is high, with about 70% of 2025 sales coming from a single leading U.S. CSP.
• Continued pricing pressure from end customers could compress gross margins.
• The migration to 800G, 1.6T, and 3.2T switches or the ramp-up of Trainium 3/4 may fall short of expectations.
• Onboarding of the new social media customer and multi-ASIC platform projects may face uncertainty around certification, mass production, or market share.
• L11 server rack integration is still early, and the assumptions of rapid revenue scaling and better-than-peer gross margins need to be validated.
• The share price has already risen about 134% year to date, valuation is near the high end of its historical range, and the stock could correct if EPS upgrades do not materialize as expected.

What to watch

• The production ramp of Trainium 3 starting from H2 2026, as well as visibility into Trainium 4 pilot production at the end of 2027 and ramp-up in 2028.
• Whether Accton's share at its core customer's 800G switch business remains stable, and whether it continues to lead in the 1.6T/3.2T upgrade cycle.
• Whether the new social media customer contributes about 10% of revenue in 2026 and continues to expand in 2027.
• Whether L11 server rack integration can increase its revenue share from about 1% in 2026 to 8% in 2028.
• Whether ODM Direct penetration in data center switches continues to rise from about 15%.
• Whether 2026/2027E EPS is revised upward versus consensus, supporting a valuation re-rating.
• The impact of technological changes such as CPO, OCS, LPO optical modules, and liquid cooling on Accton's content value and gross margin.