Nvidia placing its Bets on The Future Of the AI Stack

The chipmaker has capitalized the model, compute and optical fabric layers. Photonic integration platforms — including $POET Technologies — sit in the layer that has not yet been funded.

Nvidia Corp.'s decision to commit more than $40 billion to artificial intelligence equity deals in the first five months of 2026 has been described by analysts as a signal of how the chipmaker views the structure of the AI industry, not just a series of opportunistic investments.

CNBC reported on Saturday that the bulk of the $40 billion total reflects a single $30 billion investment in OpenAI. The remainder is spread across seven publicly disclosed multi-billion-dollar deals with publicly traded companies and roughly two dozen private startup rounds, according to FactSet data cited in the report.

The publicly disclosed deals include up to $3.2 billion in Corning Inc., the 175-year-old glassmaker that supplies optical fiber for data center fabric, and up to $2.1 billion in IREN Ltd., a data center operator that has been converting from cryptocurrency mining toward graphics processing unit compute. Nvidia also added to existing positions in CoreWeave Inc. and Nebius Group, according to the report.

A layered view of the stack

Mapped against the architecture of a modern AI deployment, Nvidia's 2026 investments span several distinct layers.

At the top of the stack is the application and model layer, where the $30 billion OpenAI investment sits alongside earlier participation in funding rounds for Anthropic and Elon Musk's xAI Corp., which merged with SpaceX in February.

Below that is the compute layer, where Nvidia's deals with CoreWeave, Nebius and IREN provide capital for the data center operators that buy Nvidia accelerators in volume.

The next layer is the optical fabric and materials layer, which has now been anchored by the Corning agreement. According to the CNBC report, the Corning deal and the IREN deal were both structured as warrants or staged commitments rather than as immediate equity purchases.

Below that sits the switch silicon layer, which Nvidia owns directly through its Quantum-X and Spectrum-X photonic switch product lines.

The gap in the middle

Between the optical fabric layer and the switch silicon layer sits what industry participants describe as the photonic integration layer — the packaging platforms that combine lasers, modulators, drive electronics and waveguides into a single, manufacturable optical engine.

That layer has not been the target of a publicly disclosed Nvidia investment in 2026. Several analysts said that absence is notable given the company's stated commitment to co-packaged optics in its product roadmap.

"You can finance the glass and you can build the silicon, but you still need somebody to do the integration in the middle," said an executive at an optical components firm, who asked not to be named because of customer relationships. "That's where the bottleneck is right now."

POET and the small-cap photonics names

Among small-cap publicly traded companies focused on photonic integration, POET Technologies Inc. has been one of the more frequently cited names by investors covering the sector. The company's Optical Interposer platform is designed to integrate photonic and electronic devices on a single wafer using standard semiconductor processes.

POET has announced co-development partnerships with Sivers Semiconductors AB $SIVEF for external light sources, with LITEON Technology Corp. for AI optical modules, with $LITE Lessengers for 1.6-terabit 2×DR4 transceivers, and with Quantum Computing Inc. for 3.2-terabit optical engines. The company exhibited at the OFC 2026 conference in Los Angeles in March.

POET reported third-quarter 2025 results in November and has said in subsequent investor communications that it expects revenue conversion from its partnership pipeline to begin in the second half of 2026, with higher volumes in 2027. Shares trade on the Nasdaq under the symbol POET.

Broader sector view

Wedbush Securities analyst Matthew Bryson told CNBC the wave of $NVDA investments fits "squarely into the circular investment theme," but added that the bets could create a competitive moat if successful. Altimeter Capital Chief Executive Brad Gerstner has said he expects Nvidia could eventually reach a $10 trillion market capitalization.

Non-marketable equity securities on Nvidia's balance sheet — which include private company investments — grew to $22.25 billion at the end of January from $3.39 billion a year earlier, according to the company's most recent annual filing. Nvidia reported gains on its public and private equity holdings of $8.92 billion last fiscal year, compared with $1.03 billion the year prior, driven in part by appreciation in its stake in Intel Corp.

What investors are watching

Industry watchers said three developments would be most likely to revalue the photonic integration sub-sector. The first is a major hyperscale design win for a co-packaged optics module. The second is the timing of any direct strategic investment by Nvidia, a hyperscaler or a sovereign technology fund into a publicly traded photonic integration company. The third is the pace at which 1.6-terabit transceiver demand converts from forecast into invoiced revenue.

Nvidia did not respond to a request for comment. Representatives for Corning and IREN confirmed the structure of their respective agreements but declined to comment further