PsiQuantum: Company Profile & Valuation

PsiQuantum is a Palo Alto-based quantum computing company developing utility-scale, fault-tolerant quantum computers using silicon photonics, an approach based on leveraging photonic qubits and semiconductor manufacturing. It was co-founded in 2016 by physicists Jeremy O'Brien, Terry Rudolph, Peter Shadbolt and Mark Thompson, who had been professors and researchers at the University of Bristol and Imperial College London.

The company builds its chips through a manufacturing partnership with GlobalFoundries and has secured government partnerships to construct its first utility-scale systems in Queensland, Australia and Chicago, Illinois. In 2025 PsiQuantum raised a $1 billion Series E round and launched Construct, a software platform for fault-tolerant quantum algorithm development.

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

Often trade at a premium or discount to NAV.

Platforms match existing holders with buyers. PsiQuantum 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 — PsiQuantum included.

The closest quantum computing peers are on the competitors page.

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

No. PsiQuantum is a private company; its shares do not trade on a public exchange.

The last valuation is $10.5B (post-money, May 2026).

Lead investors for each round are in the funding timeline.