PsiQuantum

Computers, Parts and Peripherals · Palo Alto, CA · Founded 2015 · Privately Held (backing)

Operator of a quantum computing company intended to build and deploy functional quantum computers. PsiQuantum is based in Palo Alto, CA and was founded in 2015. It is valued at about $4.8 billion as of Oct 2026, set by secondary market price, down 31% since its Series E in Sep 2025. It has raised $1.7 billion across 9 recorded rounds; the latest was a $1 billion Series E in Sep 2025.

PMV mark · valuation
$4.8B
Oct 2026
Secondary market · $/share
$27
Total raised
$1.7B
Last round
Series E
Sep 2025

PsiQuantum key facts

as of Oct 2026
  • Operator of a quantum computing company intended to build and deploy functional quantum computers.
  • PsiQuantum is valued at approximately $4.8B (~$27/share on the secondary market) as of Oct 2026, down 31% since its Series E, Sep 2025, per PrivateMarketView’s mark.
  • It has raised $1.7B across 9 recorded rounds; the latest was Series E ($1.0B) in Sep 2025.
  • Notable investors include Metaplanet Holdings, Founders Fund, Nvidia, Redpoint Ventures, MicroVentures — 58 tracked in total.
  • 1 institutional filer reports fund marks on PsiQuantum across 10 filings.
  • PrivateMarketView tracks 8 recorded secondary trades in PsiQuantum shares.
  • 7 investment vehicles were formed to buy PsiQuantum shares in the last 12 months, reporting $8.8M sold to 170 investors, per SEC Form D filings.
  • PsiQuantum has filed 1 Form D with the SEC, most recently May 2025 ($22.0M sold to 1 investors).
PrivateMarketView mark
LOW confidence
$4.8B~$27 per share · secondary market

Down 31% since its Series E, Sep 2025 ($7.0B post-money).

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Secondary market

monthly marks · 46 months · Jan 2023 – Oct 2026
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Jan 2023marks: indicative $/share, month-end · as of Oct 15, 2026Oct 2026
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PsiQuantum secondary trades

8 on record · Jun 2025 – May 2026

8 trades between Jun 2025 and May 2026. Exact dates, prices and structures are available to Pro members.

Jun 2025peak 4 prints / monthMay 2026
Individual prints are Pro.Unlock 8 trade prints

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Institutional fund marks on PsiQuantum

1 filers · latest May 2026

1 SEC-registered fund reported 10 fair-value marks on PsiQuantum between May 2025 and May 2026. Filer-level marks and implied $/share are available to Pro members.

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PsiQuantum funding rounds

9 rounds
Sep 2025Series E$1.0B▮
May 2025Early Stage VC$22.0MSEC filing▮
Mar 2022Secondary Transaction - Private$520K▮
Dec 2021Secondary Transaction - Private—▮
Oct 2021Series D$450.0M▮

Vehicles formed to buy PsiQuantum shares

secondary demand · SEC Form D filings

In the last 12 months, 7 investment vehicles were formed to buy PsiQuantum shares, reporting $8.8M sold to 170 investors across 7 sponsors. Most recent filing Apr 2026.

The vehicle list — each sponsor, filing date, amount sold and investor count — is a Pro table. Unlock the 7 vehicles →

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PsiQuantum valuation

PsiQuantum is valued at approximately $4.8 billion as of Oct 2026. The figure is set by secondary market price. The secondary market quotes about $27 per share. The reference point is its Series E in Sep 2025, at a $7 billion post-money valuation; the current figure is down 31% since.

PsiQuantum ranks 37th by valuation and 26th by capital raised among the private companies PrivateMarketView tracks.

How much has PsiQuantum raised?

PsiQuantum has raised $1.7 billion across 9 recorded rounds since 2015. The largest was a $520,000 private secondary transaction in Mar 2022; the most recent was a $1 billion Series E in Sep 2025. 5 of the rounds disclosed a post-money valuation.

PsiQuantum has filed 1 Form D with the SEC, most recently in May 2025 ($22 million sold to 1 investor).

PsiQuantum secondary market activity

8 secondary trades in PsiQuantum shares are on record, between Jun 2025 and May 2026. The busiest recent months were Dec 2025 (4 prints). Exact dates, prices and structures are available to Pro members.

A monthly secondary-market price series for PsiQuantum runs from Jan 2023 to Oct 2026 (46 months).

Institutional holders and vehicles

1 SEC-registered fund reported 10 fair-value marks on PsiQuantum between May 2025 and May 2026, in their N-PORT filings. The latest fund marks sit apart from the current valuation. Filer-level marks and implied per-share values are available to Pro members.

In the last 12 months, 7 investment vehicles were formed to buy PsiQuantum shares, reporting $8.8 million sold to 170 investors across 7 sponsors, per SEC Form D filings (most recent Apr 2026).

PsiQuantum investors

58 investors are on record for PsiQuantum, including Metaplanet Holdings, Founders Fund, Nvidia and Redpoint Ventures. By type, the record holds 20 venture capital firms, 5 asset managers and 4 growth equity firms. The Series E in Sep 2025 drew 10 investors.

Comparable companies

Comparable computers, parts and peripherals names by valuation on PrivateMarketView: Oxide Computer ($1.6 billion), Quantum Machines ($700 million) and MatX ($362 million).

About PsiQuantum

Operator of a quantum computing company intended to build and deploy functional quantum computers. The company focuses on creating large-scale, fault-tolerant systems that leverage existing infrastructure, enabling researchers and industries to tackle complex problems and drive advancements in various fields through enhanced computational capabilities.

Industry
Computers, Parts and Peripherals
Sector
Hardware
HQ
Palo Alto, CA, United States
Founded
2015
Employees
634
Ownership
Privately Held (backing)

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