# iPronics Series B funding for optical networking

> Live situation record from CLSTR: https://clstr.news/situations/ipronics-series-b-funding-for-optical-networking
> Updated: 2026-09-12T04:00:57.000Z. Sources: 9. Developments: 3.

Spanish silicon photonics company iPronics has secured $125 million in a Series B funding round to scale its optical networking technology. The round was co-led by Maverick Silicon and Light Street Capital, with participation from NVIDIA.

The funding aims to accelerate the commercial deployment of the iPronics Optical Networking Engine (ONE), a rack-mounted optical switch designed to address bandwidth and energy consumption limits in AI data centers. Unlike traditional copper-based architectures, the company’s Optical Circuit Switching (OCS) platform uses a programmable layer to reconfigure network connectivity in real time, which is intended to maximize GPU efficiency.

Subsequent reports highlight that the IOWN AI Fund, a consortium including NTT, has made its first investment in iPronics as part of this funding round. The IOWN AI Fund views the technology as complementary to its own developments in electro-optical fusion switches, noting that iPronics’ programmable optical circuit switches are particularly suited for high-capacity, sustained traffic in next-generation AI infrastructure.

NVIDIA’s participation marks its first investment in the Valencia-based startup. A spin-off from the Polytechnic University of Valencia, iPronics specializes in photonic chips that utilize light rather than electricity to transmit data. This technology is designed to resolve connectivity bottlenecks by connecting thousands of GPUs, optimizing communication for training and executing generative AI systems. To date, the company has raised approximately $177 million.

## Claims

- iPronics has closed a Series B funding round of approximately 108 million euros. (corroborated by 3 sources)
- Nvidia has invested in the Spanish startup iPronics. (corroborated by 3 sources)
- The total funding raised by iPronics since its founding is approximately 177 million dollars. (corroborated by 3 sources)
- iPronics was founded as a spin-off from the Polytechnic University of Valencia (UPV). (corroborated by 3 sources)
- The company develops photonic chips that use light instead of electricity to transmit data. (corroborated by 3 sources)
- The Series B round was co-led by Maverick Silicon and Light Street Capital. (corroborated by 3 sources)

## Timeline

### 2026-09-12: Nvidia invests in Spanish AI startup iPronics

Nvidia has invested in the Spanish startup iPronics, which specializes in photonic chips for AI data centers, as part of a 108 million euro Series B funding round.

5 sources. https://clstr.news/cluster/nvidia-invests-in-spanish-ai-startup-ipronics

### 2026-09-09: IOWN AI Fund invests in iPronics for AI data center networking

The IOWN AI Fund has completed its first investment in iPronics, participating in a $125 million Series B round to advance programmable optical networking for AI data centers.

2 sources. https://clstr.news/cluster/iown-ai-fund-invests-in-ipronics-for-ai-data-center-networking

### 2026-09-02: iPronics secures $125M to scale AI optical switching technology

iPronics has raised $125 million in Series B funding, with participation from NVIDIA, to scale its optical circuit switching technology for AI data center networking.

2 sources. https://clstr.news/cluster/ipronics-secures-125m-to-scale-ai-optical-switching-technology

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Cite as: iPronics Series B funding for optical networking. CLSTR, https://clstr.news/situations/ipronics-series-b-funding-for-optical-networking