HSBC Upgrades Marvell to Buy: AI Networking Super-Cycle Drives Valuation Re-Rating

Overview

HSBC released a research report upgrading Marvell Technology (MRVL.US) from 'Hold' to 'Buy' and raising its target price sharply from $85 to $300. The core rationale is that the market has severely undervalued Marvell’s dual opportunities in AI networking infrastructure: first, optical interconnect entering a multi-year super-cycle; second, Compute Express Link (CXL) technology playing a pivotal role in resolving memory bottlenecks arising from agent-based AI. Although the stock has rebounded over 120% since March, the firm believes Marvell’s earnings potential remains underpriced, offering significant earnings-beat potential over the next two years.

Core views

The optical interconnect business is the central driver behind this valuation re-rating. As AI clusters expand from single-rack to multi-rack 'AI factories,' traditional copper cabling hits physical limits in distance and bandwidth, prompting an industry-wide structural shift toward optical interconnect. Marvell benefits directly from this trend, holding dominant positions in 800G (70% market share) and 1.6T (50% market share) digital signal processors (DSPs). As the 'brain' of high-speed optical modules—and paired one-to-one with optical transceivers—the DSP represents a critical enabler. The report projects optical transceiver TAM will grow 70% YoY in 2027. Marvell’s optical interconnect revenue is forecast to reach $5.2B in FY27 and $8.8B in FY28—both up 70% YoY—far exceeding consensus expectations of 55% and 36%, respectively. CXL technology serves as a new growth pillar for Marvell’s custom ASIC business. Agent-based AI models generate surging demand for memory capacity and bandwidth, leading to DRAM supply shortages and creating a 'memory wall.' Through its acquisition of XConn Technologies, Marvell strengthened its CXL product portfolio; its CXL switches enable server memory pooling, sharing, and scaling—effectively bypassing traditional DIMM slot constraints. The report argues that CXL demand remains underappreciated by the market, which will drive growth in Marvell’s 'XPU-attached' business. Accordingly, the firm forecasts ASIC revenue for FY28 and FY29 to be 16% and 24% above consensus, respectively. Long-term ASIC prospects are improving, with potential large-customer orders providing upside optionality. Beyond its existing NVIDIA NVLink Fusion collaboration, media reports suggest Marvell may partner with Google to develop new TPU and MPU chips. Sensitivity analysis indicates that if Marvell ships 1–3 million such chips in FY29 (assuming ASP of $5,000), its EPS could increase by 28%–85% versus the base case. Based on these optimistic assumptions, the firm raises FY27/FY28 EPS forecasts by 21% and 61% to $4.07 and $7.12, respectively, and introduces a FY29 EPS forecast of $10.20—both at the top end of Wall Street estimates.

Analysis framework

The report adopts a hybrid analytical framework combining 'top-down industry trends' and 'bottom-up market share modeling.' First, it confirms at the macro level that accelerating AI infrastructure capex and Jevons’ Paradox (cost reductions spurring exponential usage growth) are driving optical module demand into a super-cycle. Second, at the micro level, it quantifies Marvell’s revenue upside by deconstructing DSP market share (70% in 800G, 50% in 1.6T) and average selling price (ASP). For the CXL business, it begins from the technical pain point—the 'memory wall'—and demonstrates the necessity and logic of market penetration for CXL as a solution. Finally, sensitivity analysis quantifies the earnings elasticity of potential large-customer orders (e.g., Google), thereby justifying a higher valuation multiple.

Methodology notes

• Industry/sector analysis frameworkSupply-demand framework

  Supply-demand imbalance in AI infrastructure construction

  The report notes that as AI cluster scale expands, traditional copper cabling fails to meet bandwidth and distance requirements (a supply constraint), forcing data centers to adopt optical interconnect (a demand substitution). This structural supply-demand imbalance fuels explosive growth in the optical module market.

• Valuation methodologyP/E and PEG valuation

  Forward P/E re-rating

  The firm shifts its valuation benchmark from FY27 rolling to FY28 and raises its target P/E multiple from 26x (historical average) to 42x (near historical peak), citing the market’s failure to fully reflect the high growth profile and earnings surprises driven by optical interconnect and CXL businesses.

• Event-driven and behavioral financeExpectation gap / expectation management

  Market consensus lags behind fundamental changes

  Although sell-side analysts have repeatedly raised Marvell’s forecasts, the report contends that the market still severely underestimates optical interconnect revenue growth (consensus: 36% vs. HSBC: 70%) and CXL’s potential—this expectation gap provides further upside catalyst for the stock.

Asset mapping & comparison

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

• MARVELL TECHNOLOGY INC (MRVL.US)

  Core beneficiary. As the leading supplier of 800G/1.6T DSPs and a CXL technology leader, Marvell directly benefits from surging AI datacenter demand for high-speed optical interconnect and memory expansion.

  Strengths

  70% market share in 800G DSP and ~50% in 1.6T; comprehensive CXL product portfolio capable of solving AI memory bottlenecks; deep collaboration with NVIDIA and potential Google order providing upside optionality.

  Comparison

  Compared to peers like Broadcom, Marvell holds stronger market dominance and faster product iteration cycles in specific high-speed DSP subsegments.

  Risks

  Optical transceiver market growth falls short of expectations; loss of DSP market share; delays in ASIC project execution.

Key data

• Target Price$300Sharply raised from prior $85; implies ~53% upside
• FY28 EPS Forecast$7.12Raised 61% from prior $4.41; above consensus of $5.45
• 800G DSP Market Share70%Marvell maintains absolute leadership in high-speed optical module DSP
• Optical Interconnect Revenue Forecast (FY28)$8.8BUp 70% YoY; 37% above market consensus
• Current Stock Price$196.33As of closing on May 22, 2026

Impact & implications

The report concludes that Marvell sits squarely at the center of the AI networking hardware super-cycle. Its high market share in optical interconnect DSP ensures reliable returns amid industry expansion, while CXL technology opens a second growth curve for Marvell in the AI era defined by memory constraints. If the rumored Google TPU collaboration materializes, it would further solidify Marvell’s leadership in custom ASICs and deliver substantial earnings optionality. For investors, this means Marvell is not merely a cyclical recovery play—it is a core AI infrastructure asset with long-term, structural growth drivers.

Risks

• Optical transceiver market growth slower than expected
• Greater-than-expected loss of DSP market share
• Delays in development or delivery of custom ASIC (ASIC) projects

What to watch

• Revenue guidance and gross margin performance for optical interconnect business in FY27 Q1 earnings
• Customer adoption progress and market share evolution for 1.6T DSP products
• Official confirmation or updates regarding rumored Google TPU/MPU collaboration
• Deployment status of CXL products across major cloud service providers’ data centers