GlobalFoundries Eyes $1 Billion Silicon Photonics Run Rate by 2027

GlobalFoundries expects its silicon photonics revenue to reach a $500 million run rate in fiscal 2026 and $1 billion in fiscal 2027, according to a Seeking Alpha analysis that upgraded the stock to Strong Buy with a $66 per-share price target. The numbers are company guidance embedded in an analyst thesis, not booked revenue. They are also the entire thesis.

The driver is AI data centers. As the industry shifts toward silicon photonics, GlobalFoundries carries an established presence in optics — a position the analyst argues the market has priced as if it did not exist. The next generation of GPUs and XPUs, which move ever-larger volumes of data between compute and memory, should convert that optics position into multi-year, high-margin growth.

What supports the upgrade?

The analyst case rests on three pillars:

• A projected silicon photonics revenue run rate of $500 million in eFY26, rising to $1 billion in eFY27.
• Strategic agreements, including United States–Japan fab partnerships and collaboration with TSMC, which position the company for sustained growth.
• A valuation of 8.38x EV/adjusted EBITDA, below historical midpoints, with technical indicators the analyst reads as signaling a significant recovery opportunity.

The backdrop is a familiar one. Mobile devices, long the anchor of GlobalFoundries' specialty foundry business, remain weak. The company needs a growth engine that does not depend on smartphone unit volumes. AI interconnects, where photonics replaces copper at shortening distances inside the rack, are the candidate.

That shift matters commercially. Optical interconnect sits closer to the switching and compute silicon that GlobalFoundries already manufactures on 300mm wafers at its fabs in Malta, New York, Dresden and Singapore. The analyst's framing is blunt: the market is getting an AI infrastructure franchise at a sell-off price.

How firm are the numbers?

Buyers of the thesis should note the distinction between tiers of evidence. The $500 million and $1 billion figures are forward run-rate expectations for eFY26 and eFY27, attributed to company guidance as cited by the analyst. The 8.38x EV/aEBITDA multiple is a current market datum. The $66 target and the Strong Buy rating are the analyst's own construction, and the Strong Buy label itself carries Seeking Alpha's standing caveat that past performance guarantees nothing.

The analyst disclosure is clean on conflicts: no stock, option or derivative positions in the companies mentioned, no plans to initiate any within 72 hours, no compensation beyond Seeking Alpha, and no business relationship with any company named. The work is third-party analysis, not a licensed investment recommendation.

What could go wrong?

The thesis leans heavily on the pace of silicon photonics adoption. If AI capital spending decelerates before the fiscal 2027 run rate materializes, the $1 billion figure becomes a roadmap item rather than a revenue line. Mobile weakness, meanwhile, is not projected to reverse; the analyst treats photonics as an offset, not a cure.

The competitive question goes unaddressed in the source: TSMC appears in the thesis as a collaborator, yet the same company pursues its own photonics ambitions. How much of the interconnect value chain GlobalFoundries can retain alongside its largest rival remains the variable that will decide whether 8.38x EBITDA was cheap or merely accurate.