STMicro Raises 2026 Data-Center Sales Outlook to $1.3B — Why Silicon Photonics Matters

October 29, 2026 — STMicroelectronics has raised its 2026 data-center revenue outlook to approximately $1.3 billion, compared with a July forecast of more than $1 billion, as demand for chips used in artificial-intelligence infrastructure strengthens. The revised figure is a company forecast for the full year, not revenue booked in the third quarter, and it should not be confused with ST’s total company sales.

What makes the update significant is not simply another semiconductor company benefiting from AI spending. According to Reuters’ October 29 earnings coverage, Chief Executive Jean-Marc Chery highlighted silicon photonics as a central driver of data-center demand. These technologies use light to transmit information across high-speed connections, an increasingly important engineering challenge as computing systems become larger and more interconnected.

What the earnings numbers actually show

In its official third-quarter release, ST reported $3.76 billion in group revenue for the quarter ended September 26, up 17.9% from a year earlier. Gross margin reached 37.3%, compared with 33.2% a year earlier. Operating income under U.S. GAAP was $367 million; an adjusted, non-U.S.-GAAP measure was $429 million. Those are different accounting measures, not interchangeable descriptions of profit.

The company forecast fourth-quarter group revenue of about $4.15 billion, plus or minus 3.5%, and a gross margin of roughly 39% at the midpoint. That guidance is forward-looking. ST also reiterated a target for data-center revenue well above $2 billion in 2027, according to Reuters. Neither target is a guaranteed outcome.

Why optical connections are attracting investment

AI accelerators do not operate in isolation. Large clusters must constantly move data between processors, memory and networking equipment. As clusters expand, the energy, heat and bandwidth demands of electrical connections can become constraints. Silicon photonics aims to address part of that problem by using optical signals for high-speed links. It does not eliminate all electrical components, nor does a strong outlook for one supplier establish that the entire AI infrastructure market is profitable.

ST makes semiconductors for many markets, including automotive, industrial and consumer electronics. The latest results therefore reflect both a recovery across established end markets and growth in selected newer applications. The company’s earnings statement also identifies low-Earth-orbit satellite communications as a contributor. That broader mix matters: attributing all of ST’s improvement to generative AI would overstate the evidence.

The risks behind the forecast

Supply is another part of the story. ST said it was expanding capacity in response to demand that remains above available supply. Reuters reported that management is planning materials and equipment requirements several years ahead and increasing prices on selected products. Such investment can support growth, but it also exposes the business to demand shifts, production bottlenecks and execution costs.

Reuters reported that Chery described demand as concentrated among major hyperscale cloud operators rather than smaller ‘neo-cloud’ providers. That customer mix may offer visibility into large deployments, but concentration creates its own risk if a small number of buyers revise capital-expenditure plans. Investors should also watch whether improving gross margins persist once capacity expands and component costs change.

What to watch next

The most informative tests are whether ST meets its fourth-quarter revenue and margin guidance, how much of its data-center target converts into recognized sales, and whether optical networking orders remain strong into 2027. A forecast revision signals confidence; it is not proof that future demand, pricing or margins will develop exactly as expected.

Sources and verification: STMicroelectronics, Q3 2026 financial results (October 29); Reuters, earnings and data-center forecast reporting (October 29). Figures and forward-looking statements were distinguished at the time of publication.

Featured image: Valentin Lacoste / Unsplash. Illustrative data-center photograph; not an STMicroelectronics facility or an image of the reported event.

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