Lightmatter: Company Profile & Valuation

Lightmatter builds photonic chips that form a complete interconnect platform for AI supercomputers, using light instead of only electricity to move data between chips. Its Passage interconnects and Guide light engines scale networking for AI data centers, with products ranging from the Passage EVK50 and EVK100 reference platforms to the rack-level Passage M1000, a 3D photonic interposer delivering 114 Tbps across a 4,000 mm² footprint, and the company has joined the NVIDIA NVLink Fusion ecosystem to bring its co-packaged optics to hyperscaler infrastructure.

Founded by three MIT alumni including CEO Nicholas Harris, Lightmatter is headquartered in Mountain View, California, and was valued at $4.4 billion in October 2024 after raising $850 million in total funding.

Listed funds carry late-stage private names. A fund's latest schedule of investments shows whether it holds Lightmatter.

Often trade at a premium or discount to NAV.

Platforms match existing holders with buyers. Lightmatter availability at any moment is set by the holders.

High minimums, transfer approval, company right-of-first-refusal.

Valuations, rounds and IPO status for every company in the directory — Lightmatter included.

Lead investors for each round are in the funding timeline.

The closest quantum computing / photonics peers are on the competitors page.

The routes section explains what is realistically available for a company at this stage.

Not yet. Lightmatter has filed for an IPO; until it prices, the shares do not trade publicly.