Editor’s Note: This story has been corrected to reflect that Fabrinet’s chief financial officer is Csaba Sverha.

Fabrinet‘s (NYSE:FN) fiscal fourth quarter earnings offered more than another record quarter—they revealed just how deeply the company is embedded in the AI infrastructure buildout.

While investors often associate the optical manufacturing specialist with Nvidia Corp (NASDAQ:NVDA), the company’s biggest customer update showed a much broader picture, with Cisco Systems, Inc. (NASDAQ:CSCO), Nvidia, Amazon.com, Inc. (NASDAQ:AMZN) and Nokia Corp (NYSE:NOK) each accounting for more than 10% of annual revenue, underscoring that its growth is increasingly tied to multiple technology leaders rather than a single AI winner.

Fabrinet’s Customer List Tells a Bigger AI Story

One of the most revealing disclosures in Fabrinet’s fiscal 2026 earnings wasn’t about revenue or earnings—it was about customer diversification.

During the earnings call, Chief Financial Officer Csaba Sverha said, “In 2026, we continued to diversify our customer base, with four customers representing 10% or more of total revenue. These were Cisco at 20%, Nvidia at 16%, Nokia at 11%, and Amazon at 11% of total revenue.”

That matters because it suggests Fabrinet’s AI exposure is becoming broader. Nvidia remains a key customer, but Cisco’s networking business, Amazon’s cloud infrastructure and Nokia’s communications portfolio are also contributing meaningfully to growth.

Rather than relying on one flagship customer, the company appears to be benefiting from spending across multiple parts of the AI and networking ecosystem.

That’s management’s disclosure. The inference is that Fabrinet’s position in advanced optical manufacturing is becoming more diversified as hyperscalers and networking vendors expand AI infrastructure.

Read Also: Here’s How Much You Would Have Made Owning Fabrinet Stock In The Last 10 Years

AI Demand Extends Well Beyond One Customer

Management also struck an unusually confident tone about demand.

CEO Seamus Grady said, “Demand from these markets continues to increase, which makes us optimistic about the long-term durability of these trends.”

Later in the call, he went even further, telling analysts, “There looks to be, you know, no end in sight to the demand from the customers.”

Importantly, management attributed that confidence to multiple growth engines rather than a single product cycle. The company highlighted continued momentum in data center interconnect (DCI), high-performance computing (HPC) and transceivers, while noting that new customer programs are beginning to ramp.

Analysts largely focused their questions on next-generation optical technologies, hyperscaler demand and future capacity, reinforcing that Wall Street is increasingly viewing Fabrinet as a key manufacturing partner for AI networking rather than simply a contract manufacturer.

What Fabrinet Investors Should Watch Next

The customer list may be the clearest indication yet that Fabrinet’s AI opportunity extends beyond any single company. Management has provided evidence of broad demand, diversified customers and expanding production capacity, while analysts continue probing the next wave of AI optical technologies.

For investors, the key question is no longer whether AI demand is supporting Fabrinet’s business—it appears to be—but whether the company can continue translating that diversified customer base into sustained growth as new programs move from qualification to volume production.

Read Also: Fabrinet CEO Sees ‘No End in Sight’ to Data Center Demand

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