Key Highlights

  • Marvell Technology (Nasdaq: MRVL) Data Center Revenue reached $1,651M in Q4 FY26, up 21% year-on-year and 9% quarter-on-quarter.
  • 800G PAM4 Demand remained robust in Q4 FY26, with a rapid 1.6T revenue ramp expected through FY27.
  • Marvell announced the industry's first 1.6T ZR/ZR+ DCI pluggable based on its new 2nm coherent DSP with integrated MACsec security.
  • The company expects to Supply DCI modules to all five major hyperscalers in FY27.
  • Interconnect revenue is forecast to grow more than 50% year-on-year in FY27, making it the fastest-growing segment in the portfolio.

Analysis

There is a category of Business that every serious long-term investor should spend time identifying: the invisible toll road. These are companies that do not make the headline product, do not carry the Brand that consumers recognise, but without whose technology the headline product simply cannot function. Marvell Technology (NASDAQ: MRVL) has quietly constructed one such toll road inside the global artificial intelligence infrastructure build-out, and the market has only recently begun to appreciate its depth.

 

The product in question is the optical interconnect. Every time a hyperscaler builds out a cluster of graphics processing units to train or run an artificial intelligence model, those processors need to communicate with each other at extraordinary speed across extraordinary distances. The physics of silicon and copper impose hard limits on how far and how fast data can travel. Light, carried through fibre optic cables and managed by highly specialised semiconductors called digital signal processors and PAM4 transceivers, is the answer the industry has converged on.

 

Marvell has spent years engineering exactly these components. In Q4 FY26, the company reported data center revenue of $1,651M, representing 21% growth year-on-year and 9% growth quarter-on-quarter. Within that number, the interconnect business — optical DSPs, PAM4 chipsets, TIAs, and drivers — is the engine. Robust 800G PAM4 demand was specifically called out in the quarterly results, with management describing a rapid revenue ramp expected for 1.6T products through FY27.

 

The 2nm Coherent DSP: Raising the Drawbridge

In March 2026, Marvell announced the industry's first 1.6T ZR/ZR+ DCI pluggable module based on its new 2nm coherent digital signal processor with integrated MACsec security. This is not a Marketing milestone. A coherent DSP at 2nm sets the cost, power, and integration roadmap for the next five years of long-haul and data centre interconnect. The company that owns the 2nm node today shapes the specification that hyperscalers will design around tomorrow.

 

The confirmation that Marvell expects to supply DCI modules to all five major hyperscalers in FY27 is perhaps the single most important commercial datapoint in the Q4 FY26 presentation. Five hyperscalers. Every one of them. That is not a customer relationship. That is a standard.

 

TIA and Driver Revenue: The Annualised $1 Billion Nobody Is Pricing

In the Q1 FY27 results, management stated that TIA and driver annualised revenue is expected to exceed $1 billion in the next few quarters. Transimpedance amplifiers and drivers are the analogue front-end components that sit at the interface between the optical fibre and the digital chip. They are unglamorous, they are essential, and they are designed into systems years before revenue appears. Once designed in, they are rarely designed out. This is precisely the kind of recurring, sticky, hard-to-replicate revenue stream that defines a quality compounder.

 

Total MRVL data center revenue for the full fiscal year 2026 was $6,100M, up 46% year-on-year from $4,164M in FY25. Within that, management has guided interconnect revenue to grow more than 50% year-on-year in FY27. If the FY26 interconnect base is conservatively estimated at 40% of data center revenue — approximately $2.4 billion — then a 50% growth rate implies an interconnect business approaching $3.6 billion in FY27 alone.

 

The Compounding Mechanism

What makes this business genuinely interesting from a quality investing standpoint is the compounding mechanism embedded in the technology roadmap. Each generation of optical interconnect — 400G to 800G to 1.6T to 3.2T — requires a new design cycle. Each design cycle is an opportunity for a supplier with the most advanced process node and the strongest engineering team to win sockets at every hyperscaler simultaneously. Marvell has won that cycle at 800G, is winning it at 1.6T with its 2nm DSP, and has already signalled its ambitions for 3.2T and beyond through its April 2026 Acquisition of Polariton Technologies.

 

The toll road metaphor holds because the traffic — AI workloads — is growing faster than almost any other data type in history, the road — optical interconnect infrastructure — is being built by Marvell's technology, and the alternative routes are genuinely inferior. Competitors exist, but none has simultaneously achieved 2nm process Leadership, a five-hyperscaler supply relationship, and a $1 billion TIA and driver run rate.

 

The question worth sitting with is not whether Marvell has built a moat. The Q4 FY26 and Q1 FY27 data make a strong case that it has. The question is how long the toll road extends — and whether management can maintain the engineering pace required to stay at the leading edge of each successive generational transition.

Disclaimer

This article is for informational purposes only and does not constitute financial advice or a recommendation to buy or sell any security. All data is sourced from Marvell Technology's official Earnings presentations (FY26 Q4 and Q1 FY27). Investors should conduct their own Due Diligence before making Investment decisions.