PsiQuantum valuation, funding and investors

PsiQuantum works in fault-tolerant quantum computing system deployment, based in Palo Alto, United States. Founded in 2016, it has about 671 employees.

Palo Alto Grant

VALUATION · TODAY

$9.58B +0% after Series E

Range $6.01B – $11.03B · Grade B

TODAY

+12 MO

$5.00B

$10.00B

$15.00B

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

Series A $13.5M

Series B $50.0M

Series C $230M

Series D $450M

Growth $610M

Series E $1.00B

ValuationBefore first round12-month outlook: where it points, how wide it fansHover the past: the outlook shows what was predicted then

HEADCOUNT · TODAY671 employees

+9%6m growth

+27%1y growth

+116%2y growth

250

500

750

Data from Jan 2021

TODAY

Predicted in 1 yr $9.58B +0% vs today

Predicted next raise $1.05B if a round comes

Winding-down probability 0%

Last round: Series E · $1.00B · Sep 2025
Valuation at last round: $7.00B
Headcount: 671 · up
Grade: B
Founded: 2016

How VCMC values companies →

PsiQuantum valuation today

VCMC values PsiQuantum at $9.6B today, with a range of $6.0B to $11.0B and a grade of B. The valuation starts from its last funding round, a Series E round in Sep 2025.

Valuation by date (137 rows)

Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.

PsiQuantum: valuation by date, as the model would have shown it on each date
Date	Valuation	Range	Predicted in 1 yr	Phase	Headcount	Trend	Grade	Winding-down probability
1 Jan 2016	$5.86M	$2.13M – $16.1M	$7.03M (+20%)	before first round	–	unknown	D	0%
1 Feb 2016	$5.88M	$2.14M – $16.2M	$7.22M (+23%)	before first round	–	unknown	D	0%
1 Mar 2016	$5.91M	$2.15M – $16.2M	$7.40M (+25%)	before first round	–	unknown	D	0%
1 Apr 2016	$5.93M	$2.16M – $16.3M	$7.60M (+28%)	before first round	–	unknown	D	0%
1 May 2016	$5.95M	$2.17M – $16.4M	$7.80M (+31%)	before first round	–	unknown	D	0%
1 Jun 2016	$75.0M	$49.3M – $205M	$135M (+80%)	after a round	–	unknown	C	0%
2 Jun 2016	$75.1M	$49.3M – $205M	$135M (+80%)	after a round	–	unknown	C	0%
1 Jul 2016	$78.7M	$49.3M – $205M	$135M (+72%)	after a round	–	unknown	C	0%
1 Aug 2016	$82.7M	$49.3M – $205M	$135M (+63%)	after a round	–	unknown	C	0%
1 Sep 2016	$87.0M	$49.3M – $205M	$135M (+55%)	after a round	–	unknown	C	0%
1 Oct 2016	$91.3M	$49.3M – $205M	$135M (+48%)	after a round	–	unknown	C	0%
1 Nov 2016	$95.9M	$49.3M – $205M	$135M (+41%)	after a round	–	unknown	C	0%
1 Dec 2016	$101M	$49.3M – $205M	$135M (+34%)	after a round	–	unknown	C	0%
1 Jan 2017	$106M	$49.3M – $205M	$135M (+28%)	after a round	–	unknown	C	0%
1 Feb 2017	$111M	$49.3M – $205M	$135M (+21%)	after a round	–	unknown	C	0%
1 Mar 2017	$116M	$49.3M – $205M	$135M (+16%)	after a round	–	unknown	C	0%
1 Apr 2017	$122M	$49.3M – $205M	$135M (+10%)	after a round	–	unknown	C	0%
1 May 2017	$128M	$49.3M – $205M	$135M (+5%)	after a round	–	unknown	C	0%
1 Jun 2017	$135M	$49.3M – $205M	$135M (0%)	after a round	–	unknown	C	0%
1 Jul 2017	$135M	$46.9M – $205M	$135M (0%)	after a round	–	unknown	C	0%
1 Aug 2017	$135M	$44.6M – $205M	$135M (0%)	after a round	–	unknown	C	0%
1 Sep 2017	$269M	$190M – $573M	$403M (+50%)	after a round	–	unknown	B	0%
2 Sep 2017	$269M	$190M – $573M	$403M (+50%)	after a round	–	unknown	B	0%
1 Oct 2017	$278M	$190M – $573M	$403M (+45%)	after a round	–	unknown	B	0%
1 Nov 2017	$288M	$190M – $573M	$403M (+40%)	after a round	–	unknown	B	0%
1 Dec 2017	$298M	$190M – $573M	$403M (+36%)	after a round	–	unknown	B	0%
1 Jan 2018	$308M	$190M – $573M	$403M (+31%)	after a round	–	unknown	B	0%
1 Feb 2018	$319M	$190M – $573M	$403M (+27%)	after a round	–	unknown	B	0%
1 Mar 2018	$329M	$190M – $573M	$403M (+23%)	after a round	–	unknown	B	0%
1 Apr 2018	$340M	$190M – $573M	$403M (+19%)	after a round	–	unknown	B	0%
1 May 2018	$352M	$190M – $573M	$403M (+15%)	after a round	–	unknown	B	0%
1 Jun 2018	$364M	$190M – $573M	$403M (+11%)	after a round	–	unknown	B	0%
1 Jul 2018	$377M	$190M – $573M	$403M (+7%)	after a round	–	unknown	B	0%
1 Aug 2018	$390M	$190M – $573M	$403M (+4%)	after a round	–	unknown	B	0%
1 Sep 2018	$403M	$190M – $573M	$403M (0%)	after a round	–	unknown	B	0%
1 Oct 2018	$403M	$182M – $573M	$403M (0%)	after a round	–	unknown	B	0%
1 Nov 2018	$403M	$174M – $573M	$403M (0%)	after a round	–	unknown	B	0%
1 Dec 2018	$403M	$167M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Jan 2019	$403M	$159M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Feb 2019	$403M	$152M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Mar 2019	$403M	$146M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Apr 2019	$403M	$140M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 May 2019	$403M	$134M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Jun 2019	$403M	$128M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Jul 2019	$403M	$123M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Aug 2019	$403M	$118M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Sep 2019	$403M	$113M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Oct 2019	$403M	$99.1M – $573M	$403M (0%)	after a round	–	unknown	C	0%
1 Nov 2019	$1.7B	$1.2B – $3.1B	$2.2B (+30%)	after a round	–	unknown	B	0%
2 Nov 2019	$1.7B	$1.2B – $3.1B	$2.2B (+30%)	after a round	–	unknown	B	0%
1 Dec 2019	$1.7B	$1.2B – $3.1B	$2.2B (+27%)	after a round	–	unknown	B	0%
1 Jan 2020	$1.7B	$1.2B – $3.1B	$2.2B (+24%)	after a round	–	unknown	B	0%
1 Feb 2020	$1.8B	$1.2B – $3.1B	$2.2B (+22%)	after a round	–	unknown	B	0%
1 Mar 2020	$1.8B	$1.2B – $3.1B	$2.2B (+19%)	after a round	–	unknown	B	0%
1 Apr 2020	$1.9B	$1.2B – $3.1B	$2.2B (+17%)	after a round	–	unknown	B	0%
1 May 2020	$1.9B	$1.2B – $3.1B	$2.2B (+14%)	after a round	–	unknown	B	0%
1 Jun 2020	$1.9B	$1.2B – $3.1B	$2.2B (+12%)	after a round	–	unknown	B	0%
1 Jul 2020	$2.0B	$1.2B – $3.1B	$2.2B (+9%)	after a round	–	unknown	B	0%
1 Aug 2020	$2.0B	$1.2B – $3.1B	$2.2B (+7%)	after a round	–	unknown	B	0%
1 Sep 2020	$2.1B	$1.2B – $3.1B	$2.2B (+4%)	after a round	–	unknown	B	0%
1 Oct 2020	$2.1B	$1.2B – $3.1B	$2.2B (+2%)	after a round	–	unknown	B	0%
1 Nov 2020	$2.2B	$1.2B – $3.1B	$2.2B (0%)	after a round	–	unknown	B	0%
1 Dec 2020	$2.2B	$1.1B – $3.1B	$2.2B (0%)	after a round	–	unknown	B	0%
1 Jan 2021	$2.2B	$1.1B – $3.1B	$2.2B (0%)	after a round	110	unknown	B	0%
1 Feb 2021	$2.2B	$1.0B – $3.1B	$2.2B (0%)	after a round	110	unknown	B	0%
1 Mar 2021	$2.2B	$978M – $3.1B	$2.2B (0%)	after a round	110	unknown	B	0%
1 Apr 2021	$2.2B	$934M – $3.1B	$2.2B (0%)	after a round	110	flat	B	0%
1 May 2021	$2.2B	$893M – $3.1B	$2.2B (0%)	after a round	110	flat	C	0%
1 Jun 2021	$2.2B	$852M – $3.1B	$2.2B (0%)	after a round	110	flat	C	0%
1 Jul 2021	$2.2B	$815M – $3.1B	$2.2B (0%)	after a round	110	flat	C	0%
28 Jul 2021	$3.2B	$2.7B – $4.7B	$4.1B (+30%)	after a round	110	flat	A	0%
1 Aug 2021	$3.2B	$2.7B – $4.7B	$4.1B (+30%)	after a round	110	flat	A	0%
1 Sep 2021	$3.2B	$2.7B – $4.7B	$4.1B (+27%)	after a round	110	flat	A	0%
1 Oct 2021	$3.3B	$2.7B – $4.7B	$4.1B (+24%)	after a round	110	flat	A	0%
1 Nov 2021	$3.4B	$2.7B – $4.7B	$4.1B (+21%)	after a round	110	flat	A	0%
1 Dec 2021	$3.5B	$2.7B – $4.7B	$4.1B (+19%)	after a round	110	flat	A	0%
1 Jan 2022	$3.5B	$2.7B – $4.7B	$4.1B (+16%)	after a round	110	flat	A	0%
1 Feb 2022	$3.8B	$2.7B – $5.2B	$4.6B (+20%)	after a round	180	growing	B	0%
1 Mar 2022	$3.9B	$2.7B – $5.2B	$4.6B (+16%)	after a round	180	growing	B	0%
1 Apr 2022	$4.1B	$2.7B – $5.2B	$4.6B (+13%)	after a round	180	growing	B	0%
1 May 2022	$4.2B	$2.7B – $5.2B	$4.6B (+9%)	after a round	180	growing	B	0%
1 Jun 2022	$4.3B	$2.7B – $5.2B	$4.6B (+6%)	after a round	180	growing	B	0%
1 Jul 2022	$4.4B	$2.7B – $5.2B	$4.6B (+3%)	after a round	180	growing	B	0%
1 Aug 2022	$4.6B	$2.7B – $5.2B	$4.6B (0%)	after a round	180	growing	B	0%
1 Sep 2022	$4.6B	$2.8B – $5.2B	$4.6B (0%)	after a round	180	growing	B	0%
1 Oct 2022	$4.6B	$2.8B – $5.2B	$4.6B (0%)	after a round	180	growing	B	0%
1 Nov 2022	$4.6B	$2.4B – $5.2B	$4.6B (0%)	after a round	180	unknown	B	0%
1 Dec 2022	$4.6B	$2.4B – $5.2B	$4.6B (0%)	after a round	180	unknown	B	0%
1 Jan 2023	$4.6B	$2.3B – $5.2B	$4.6B (0%)	after a round	180	unknown	B	0%
1 Feb 2023	$4.6B	$2.2B – $5.2B	$4.6B (0%)	after a round	180	unknown	B	0%
1 Mar 2023	$4.6B	$2.1B – $5.2B	$4.6B (0%)	after a round	180	unknown	B	0%
1 Apr 2023	$4.9B	$3.2B – $5.6B	$4.9B (0%)	after a round	250	growing	A	0%
1 May 2023	$4.9B	$3.3B – $5.6B	$4.9B (0%)	after a round	250	growing	A	0%
1 Jun 2023	$4.9B	$3.4B – $5.6B	$4.9B (0%)	after a round	250	growing	A	0%
1 Jul 2023	$4.9B	$3.4B – $5.6B	$4.9B (0%)	after a round	250	growing	A	0%
1 Aug 2023	$4.9B	$3.3B – $5.6B	$4.9B (0%)	after a round	250	growing	A	0%
1 Sep 2023	$4.9B	$1.7B – $5.6B	$4.9B (0%)	after a round	250	unknown	C	0%
1 Oct 2023	$4.9B	$1.6B – $5.7B	$4.9B (-2%)	after a round	260	flat	C	0%
1 Nov 2023	$4.9B	$1.5B – $5.7B	$4.8B (-2%)	after a round	260	flat	C	0%
1 Dec 2023	$4.9B	$1.5B – $5.7B	$4.8B (-3%)	after a round	260	flat	C	0%
1 Jan 2024	$4.9B	$1.4B – $5.7B	$4.8B (-4%)	after a round	260	flat	C	0%
1 Feb 2024	$5.0B	$1.3B – $5.7B	$4.8B (-4%)	after a round	270	flat	C	0%
1 Mar 2024	$5.0B	$1.3B – $5.7B	$4.8B (-4%)	after a round	270	flat	C	0%
1 Apr 2024	$6.6B	$4.7B – $10.4B	$7.3B (+10%)	after a round	270	flat	B	0%
2 Apr 2024	$6.6B	$4.7B – $10.4B	$7.3B (+10%)	after a round	270	flat	B	0%
1 May 2024	$6.7B	$4.7B – $10.4B	$7.3B (+9%)	after a round	270	flat	B	0%
1 Jun 2024	$6.7B	$4.7B – $10.4B	$7.3B (+8%)	after a round	270	flat	B	0%
1 Jul 2024	$6.8B	$4.7B – $10.4B	$7.3B (+7%)	after a round	270	flat	B	0%
1 Aug 2024	$6.9B	$4.8B – $10.7B	$7.5B (+9%)	after a round	310	up	B	0%
1 Sep 2024	$7.0B	$4.8B – $10.7B	$7.5B (+8%)	after a round	310	up	B	0%
1 Oct 2024	$7.1B	$4.8B – $10.7B	$7.5B (+6%)	after a round	310	up	B	0%
1 Nov 2024	$7.3B	$5.0B – $11.0B	$7.7B (+7%)	after a round	350	up	B	0%
1 Dec 2024	$7.4B	$5.0B – $11.0B	$7.7B (+5%)	after a round	350	up	B	0%
1 Jan 2025	$7.4B	$5.0B – $11.0B	$7.7B (+4%)	after a round	350	up	B	0%
1 Feb 2025	$7.5B	$5.0B – $11.0B	$7.7B (+3%)	after a round	350	up	B	0%
1 Mar 2025	$7.6B	$5.0B – $11.0B	$7.7B (+1%)	after a round	350	up	B	0%
1 Apr 2025	$7.7B	$5.0B – $11.0B	$7.7B (0%)	after a round	350	up	B	0%
1 May 2025	$7.7B	$4.8B – $11.0B	$7.7B (0%)	after a round	350	up	B	0%
1 Jun 2025	$7.7B	$4.7B – $11.0B	$7.7B (0%)	after a round	350	up	B	0%
1 Jul 2025	$7.7B	$4.6B – $11.0B	$7.7B (0%)	after a round	350	up	B	0%
1 Aug 2025	$8.5B	$5.3B – $12.0B	$8.5B (0%)	after a round	530	growing	B	0%
1 Sep 2025	$7.0B	$6.1B – $10.5B	$9.1B (+30%)	after a round	530	growing	A	0%
2 Sep 2025	$7.0B	$6.1B – $10.5B	$9.1B (+30%)	after a round	530	growing	A	0%
1 Oct 2025	$7.2B	$6.1B – $10.5B	$9.1B (+27%)	after a round	530	growing	A	0%
1 Nov 2025	$7.3B	$6.1B – $10.5B	$9.2B (+25%)	after a round	545	growing	A	0%
1 Dec 2025	$7.5B	$6.1B – $10.5B	$9.2B (+22%)	after a round	545	growing	A	0%
1 Jan 2026	$7.7B	$6.1B – $10.7B	$9.3B (+21%)	after a round	580	growing	A	0%
1 Feb 2026	$7.9B	$6.1B – $10.7B	$9.3B (+18%)	after a round	580	growing	A	0%
1 Mar 2026	$8.1B	$6.1B – $10.7B	$9.3B (+15%)	after a round	580	growing	A	0%
1 Apr 2026	$8.3B	$6.1B – $10.8B	$9.4B (+13%)	after a round	615	growing	A	0%
1 May 2026	$8.5B	$6.1B – $10.9B	$9.4B (+11%)	after a round	626	growing	A	0%
1 Jun 2026	$8.8B	$6.1B – $10.9B	$9.4B (+8%)	after a round	626	up	A	0%
1 Jul 2026	$9.0B	$6.1B – $10.9B	$9.4B (+5%)	after a round	626	up	A	0%
1 Aug 2026	$9.2B	$6.1B – $10.9B	$9.4B (+3%)	after a round	626	up	A	0%
1 Sep 2026	$9.4B	$6.1B – $10.9B	$9.4B (0%)	after a round	626	up	A	0%
1 Oct 2026	$9.6B	$6.0B – $11.0B	$9.6B (0%)	after a round	671	up	B	0%
24 Oct 2026	$9.6B	$6.0B – $11.0B	$9.6B (0%)	after a round	671	up	B	0%

Key facts about PsiQuantum

Founded: 2016
Headquarters: Palo Alto, United States
Employees: about 671 +23% in a year
Total raised: $2.50B
Funding rounds: 8
Last round: Grant Jul 2026

PsiQuantum was founded in 2016 by Jeremy O'Brien, Mark Thompson, Pete Shadbolt and Terry Rudolph.

PsiQuantum funding history

PsiQuantum has 8 funding rounds on record, from Jun 2016 to Jul 2026, $2.50B in total. The latest disclosed valuation is $7.00B post-money (Series E, Sep 2025).

Grant 27 Jul 2026no round page
With DARPA.
Sources: globenewswire.com
$125M
Series E 1 Sep 2025
Led by BlackRock, Temasek, Baillie Gifford; with Macquarie, Ribbit, NVentures, Adage Capital Management, Qatar Investment Authority, Type One Ventures, Morgan Stanley, 1789 Capital, S Ventures (SentinelOne), Blackbird, Third Point Ventures, T. Rowe Price Associates, Inc..
Sources: fwdstart.me, psiquantum.com, tsginvest.com and 3 more
$1.00B
$7.00B post-money
Other 30 May 2025no round page
Led by BlackRock.
Sources: castleplacement.com
$22M
Growth Equity 1 Apr 2024
Led by QIC.
Sources: carre.partners, f4.fund
$610M
Series D 27 Jul 2021
Led by BlackRock; with Baillie Gifford, M12, Blackbird, Temasek, Quantum Group.
Sources: finsmes.com, thequantuminsider.com, electronicsweekly.com
$450M
$3.15B post-money
Series C 1 Nov 2019
Led by M12; with Atomico, Founders Fund, Redpoint Ventures, Playground, BlackRock.
Sources: thequantuminsider.com, thehouse.fund, alleywatch.com
$230M
Series B 1 Sep 2017
Led by Founders Fund.
Sources: carre.partners
$50M
Series A 1 Jun 2016
Led by Playground.
Sources: carre.partners
$14M

PsiQuantum investors

23 investors have backed PsiQuantum; BlackRock, Baillie Gifford and Founders Fund and 4 more led at least one round.

BlackRock lead, 4 rounds
Baillie Gifford lead, 2 rounds
Founders Fund lead, 2 rounds
M12 lead, 2 rounds
Temasek lead, 2 rounds
1789 Capital
Adage Capital Management
Atomico
DARPA
Macquarie
Morgan Stanley
NVentures
Qatar Investment Authority
Redpoint Ventures
Ribbit
S Ventures (SentinelOne)
T. Rowe Price Associates, Inc.
Third Point Ventures

What PsiQuantum does

PsiQuantum works in semiconductors, with 13 recorded offerings and customers in automotive, pharmaceuticals, aerospace and defense.

PsiQuantum, Corp. is an American company engaged in quantum computing technology development and deployment. The company focuses on fault-tolerant quantum computing using silicon photonics and modular hardware platforms, and develops software tools for quantum algorithm design. PsiQuantum serves clients in sectors such as automotive, pharmaceuticals, aerospace, defense, energy, environmental, and fundamental research, and collaborates with government agencies and industry partners to advance quantum computing applications.

Description from Veridion's company data.

Products and services

Fault-Tolerant Quantum Computing System Deployment
Modular Quantum Computing Platform Development
Silicon Photonics Technology Integration
Photonic Qubit Technology Implementation
Quantum Chip Manufacturing
Quantum Algorithm Design Software Development
Quantum Circuit Visualization Tool Development
Quantum Optimization Tool Development
Utility-Scale Quantum Computer Construction
Strategic Quantum Computing Partnership Facilitation
Industry-Specific Quantum Computing Solutions
Quantum Computing Research and Development
STEM Education Program Services

Markets

Automotive
Pharmaceuticals
Aerospace
Defense
Energy
Environmental
Healthcare
Chemicals
Fundamental Research

Technology

Silicon Photonics
Photonic Qubits
Modular Packaging Units
Fault-Tolerant Quantum Computing

Business model

Business-to-Business
Manufacturing
Enterprise

Industry codes (NAICS)

334413 Semiconductor and Related Device Manufacturing 50% match
541511 Custom Computer Programming Services 30% match
541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 20% match

Questions about PsiQuantum

What is PsiQuantum worth?

Valuation $9.6B (range $6.0B to $11.0B), as of 24 Oct 2026. The last disclosed valuation was $7.00B (Series E, Sep 2025).

Has PsiQuantum raised money?

PsiQuantum has 8 funding rounds on record, from Jun 2016 to Jul 2026, $2.50B in total. The latest disclosed valuation is $7.00B post-money (Series E, Sep 2025).

Who has invested in PsiQuantum?

BlackRock, Baillie Gifford, Founders Fund, M12, Playground and QIC, and 17 more. Lead investors include BlackRock, Baillie Gifford, Founders Fund and M12.

How many people work at PsiQuantum?

About 671, up 23% over the last year. Headcount grew from 110 in Jan 2021 to 671 in Oct 2026.

What does PsiQuantum do?

PsiQuantum works in semiconductors, with 13 recorded offerings and customers in automotive, pharmaceuticals, aerospace and defense. Its main offerings are fault-tolerant quantum computing system deployment, modular quantum computing platform development and silicon photonics technology integration.

When was PsiQuantum founded, and where is it based?

PsiQuantum was founded in 2016 and is based in Palo Alto, United States. It has about 671 employees, up 23% over the last year.

How we value companies Report an issue

PsiQuantum valuation, funding and investors

PsiQuantum valuation today

Key facts about PsiQuantum

PsiQuantum funding history

Grant 27 Jul 2026no round page

Series E 1 Sep 2025

Other 30 May 2025no round page

Growth Equity 1 Apr 2024

Series D 27 Jul 2021

Series C 1 Nov 2019

Series B 1 Sep 2017

Series A 1 Jun 2016