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PSIQ
Privately held company

PsiQuantum

$29.08

Source: Nasdaq Private Markets
$3.80 (11.56%)past six months

Pricing and valuation data provided by Nasdaq Private Market (Tape D®). Private company shares are not available for trading on Public or any public exchanges. Displayed values are estimates based on historical primary & secondary activity and not a guarantee of real-time market price.

PsiQuantum Valuation

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About PsiQuantum

PsiQuantum is a quantum computing company that develops advanced photonic‑based systems designed to overcome scaling and error correction challenges in next‑generation computing. It focuses on creating large‑scale, fault‑tolerant quantum computers by leveraging light particles and semiconductor manufacturing techniques to enable powerful computation beyond classical limits. The company also builds...read more
Co-FounderMark Thompson
Co-FounderJeremy O'Brien
Co-FounderTerry Rudolph
Co-FounderPeter Shadbolt
CEOVictor Peng
COOFariba Danesh
CFOSusan Kim
CTOMark Thompson
HeadquartersPalo Alto, CA
Founded2015
SectorAI & Machine Learning

PsiQuantum Funding History

Financing RoundDateAmount
Series ESep 23, 2025$209M
Series ESep 10, 2025$760M
Series ESep 10, 2025$31M
Series DJul 27, 2021$450M
Series CSep 9, 2019$124M
Series BSep 26, 2017$50M

Public market exposure

Publicly traded companies with exposure to this private company.

BlackRock Technology and Priva BTX

BlackRock Technology & Private Equity Term Trust ($BTX) holds PsiQuantum at 6.10% of NAV (~$72M, Aug 2026), ~7% of its ~$1.05B market cap. BlackRock led PsiQuantum's $1B Series E at $7B (Sep 2025). BTX trades at a ~12% discount to NAV ($8.97 vs. $10.17). Data as of 9/29/26.

BlackRock Science and Technology Trust II BSTZ

BlackRock Science & Technology Term Trust ($BSTZ) holds PsiQuantum at 5.29% of NAV (~$118M, Aug 2026), ~6% of its ~$2.04B market cap. PsiQuantum's estimated secondary market price is $28.66/share. BSTZ trades at an ~8% discount to NAV ($29.64 vs. $32.34). Data as of 9/29/26.

PsiQuantum lead investors

  • 1789 Capital
  • Adage Capital Management L.P.
  • Atomico Ventures
  • Baillie Gifford
  • Blackbird Ventures
  • BlackRock
  • Counterpoint Global
  • Founders Fund
  • M12; FKA: Microsoft Ventures
  • Macquarie Capital
  • NVentures
  • Playground Global
  • Qatar Investment Authority (QIA)
  • Redpoint Ventures
  • Ribbit Capital
  • S Ventures
  • Temasek
  • Third Point Ventures
  • T. Rowe Price Associates, Inc.
  • Type One Ventures

FAQ

Frequently asked questions

PsiQuantum's estimated secondary market share price is $29.08 as of October 2026.

PsiQuantum's last official round, Series E, was for $209M.

PsiQuantum's last known funding was on Sep 23, 2025 for $209M.

PsiQuantum's major investors are 1789 Capital, Adage Capital Management L.P., Atomico Ventures, Baillie Gifford, Blackbird Ventures, BlackRock, Counterpoint Global, Founders Fund, M12; FKA: Microsoft Ventures, Macquarie Capital, NVentures, Playground Global, Qatar Investment Authority (QIA), Redpoint Ventures, Ribbit Capital, S Ventures, Temasek, Third Point Ventures, T. Rowe Price Associates, Inc., Type One Ventures.

As of November 11, 2026, PsiQuantum is not yet publicly traded.

Private companies

PsiQuantum Valuation

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