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PsiQuantum

Semiconductors · Palo Alto, United States · Founded 2016

General purpose silicon photonic quantum computing

Valuation $5–10B
Headcount 500–1k
Unlock exact values This page shows ranges. Dealroom has the exact numbers for PsiQuantum and the history behind them.
Power Law Unicorn$1–10B valuation tier
Knowledge graph
News Photonic quantum computing accelerates: Xanadu lists, Photonic Inc raises $200M+ May 28, 2026 News Playground Global closes $475M deep tech fund, beating its target by $125M May 19, 2026 News Quantum Motion raises $160M to build quantum computers on silicon chips May 7, 2026

Talent graph

PsiQuantum's talent

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Employees mapped 649 incl. 4 AI specialists
Founders Hidden — book a demo/100 quality score
Key operators 12 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

25 investors on PsiQuantum's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Series A 2 investors entered at this stage
Playground Global
Redpoint
Series B+ 23 investors entered at this stage
Queensland Government
Founders Fund
Baillie Gifford
Macquarie
Qatar Investment Authority
Blackbird Ventures
M12
Type One Ventures
Blackbird Ventures
Third Point Ventures
A&E Investments
Counterpoint Global (Morgan Stanley)
Ribbit Capital
Nvidia
SentinelOne
Adage Capital
1789 Capital
Atomico
University of Bristol
T. Rowe Price
Temasek
BlackRock
NVentures

Ownership

Who owns PsiQuantum

Estimated cap table from Dealroom's shareholder data — share of equity by holder. Stakes as last recorded by Dealroom (2026). Percentages are indicative.

23.5% Founders
  • BlackRock 11.5%

Some investors are hidden on this public profile. See the full cap table on Dealroom →

Global footprint

Where PsiQuantum has talent and traffic

Workforce by country
16 countries with
team presence
🇺🇸 United States82.3%
🇬🇧 United Kingdom6.7%
🇦🇺 Australia2.5%
🇩🇪 Germany2.2%
🇨🇦 Canada1.6%
Top 5 of 16 shown
Web traffic by country
110K monthly visits
across markets
🇺🇸 United States48.4%
🇨🇦 Canada13.1%
🇦🇺 Australia7.2%
🇮🇳 India6.2%
🇬🇧 United Kingdom4.2%
Top 5 markets shown

Patent intelligence

$54M patent portfolio · 172 active families

Estimated portfolio value
$54M
0.77% of valuation · 1.8× larger than top peer Rigetti Computing ($29M)
172 active patent families
Where PsiQuantum innovates Atomic physicsHemt circuitsMaterials scienceMechanical engineeringParticle physics

Where PsiQuantum concentrates vs peers

Each axis is a top-10 topic across PsiQuantum and its closest peers. #1 = 100, #10 = 10, absent = 0.

Compare against

Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.

Market sentiment

What the market is saying about PsiQuantum

An AI-synthesized read of the highest-engagement posts about PsiQuantum on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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