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Fluidstack valuation, funding and investors

fluidstack.io ↗LinkedIn ↗

Fluidstack works in AI infrastructure solutions development, based in London, United Kingdom. Founded in 2021, it has about 440 employees.

Hosting & Cloud Infrastructure Providers London Series B
VALUATION · TODAY
$18.92B +43% after Series B
Range $15.65B – $31.06B · Grade B
TODAY
+12 MO
$10.00B
$20.00B
$30.00B
$40.00B
2020
2021
2022
2023
2024
2025
2026
2027
Seed $3.00M
Series A $830M
Series B $1.50B
ValuationBefore first round12-month outlook: where it points, how wide it fansHover the past: the outlook shows what was predicted then
HEADCOUNT · TODAY440 employees
+394%6m growth
+503%1y growth
+2344%2y growth
250
500
Data from Jan 2021
TODAY
Predicted in 1 yr $27.00B +43% vs today
Predicted next raise $3.24B if a round comes
Winding-down probability 0%
Last round
Series B · $1.50B · Sep 2026
Valuation at last round
$18.00B
Headcount
440 · growing
Grade
B
Founded
2021
How VCMC values companies →

Fluidstack valuation today

VCMC values Fluidstack at $18.9B today, with a range of $15.6B to $31.1B and a grade of B. The valuation starts from its last funding round, a Series B round in Sep 2026.

Valuation by date (98 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.

Fluidstack: valuation by date, as the model would have shown it on each date
DateValuationRangePredicted in 1 yrPhaseHeadcountTrendGradeWinding-down probability
1 Jan 2019$7.63M$2.78M – $21.0M$9.43M (+24%)before first round–unknownD0%
1 Feb 2019$7.84M$2.85M – $21.5M$9.52M (+21%)before first round–unknownD0%
21 Feb 2019$18.4M$12.1M – $55.9M$36.7M (+100%)after a round–unknownC0%
1 Mar 2019$18.7M$12.1M – $55.9M$36.7M (+97%)after a round–unknownC0%
1 Apr 2019$19.8M$12.1M – $55.9M$36.7M (+85%)after a round–unknownC0%
1 May 2019$21.0M$12.1M – $55.9M$36.7M (+75%)after a round–unknownC0%
1 Jun 2019$22.2M$12.1M – $55.9M$36.7M (+65%)after a round–unknownC0%
1 Jul 2019$23.5M$12.1M – $55.9M$36.7M (+56%)after a round–unknownC0%
1 Aug 2019$25.0M$12.1M – $55.9M$36.7M (+47%)after a round–unknownC0%
1 Sep 2019$26.5M$12.1M – $55.9M$36.7M (+39%)after a round–unknownC0%
1 Oct 2019$28.0M$12.1M – $55.9M$36.7M (+31%)after a round–unknownC0%
1 Nov 2019$29.7M$12.1M – $55.9M$36.7M (+24%)after a round–unknownC0%
1 Dec 2019$31.5M$12.1M – $55.9M$36.7M (+17%)after a round–unknownC0%
1 Jan 2020$33.4M$12.1M – $55.9M$36.7M (+10%)after a round–unknownC0%
1 Feb 2020$35.4M$12.1M – $55.9M$36.7M (+4%)after a round–unknownC0%
1 Mar 2020$36.7M$11.9M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Apr 2020$36.7M$11.3M – $55.9M$36.7M (0%)after a round–unknownC0%
1 May 2020$36.7M$10.7M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Jun 2020$36.7M$10.2M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Jul 2020$36.7M$9.71M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Aug 2020$36.7M$9.23M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Sep 2020$36.7M$8.77M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Oct 2020$36.7M$8.35M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Nov 2020$36.7M$7.93M – $55.9M$36.7M (0%)after a round–unknownC0%
1 Dec 2020$36.7M$7.55M – $55.9M$36.7M (0%)after a round–unknownD0%
1 Jan 2021$36.7M$7.18M – $55.9M$36.7M (0%)after a round11unknownD0%
1 Feb 2021$36.7M$6.82M – $55.9M$36.7M (0%)after a round11unknownD0%
1 Mar 2021$36.7M$6.51M – $55.9M$36.7M (0%)after a round11unknownD0%
1 Apr 2021$36.7M$6.19M – $55.9M$36.3M (-1%)after a round11flatD0%
1 May 2021$36.7M$5.89M – $55.9M$36.0M (-2%)after a round11flatD0%
1 Jun 2021$36.7M$5.60M – $55.9M$35.7M (-3%)after a round11flatD0%
1 Jul 2021$36.7M$5.33M – $55.9M$35.4M (-4%)after a round11flatD0%
1 Aug 2021$36.7M$5.07M – $55.9M$35.1M (-4%)after a round11flatD0%
1 Sep 2021$36.7M$4.81M – $55.9M$34.8M (-5%)after a round11flatD0%
1 Oct 2021$36.7M$4.58M – $55.9M$34.5M (-6%)after a round11flatD0%
1 Nov 2021$36.7M$4.36M – $55.9M$34.2M (-7%)after a round11flatD0%
1 Dec 2021$36.7M$4.15M – $55.9M$33.9M (-7%)after a round11flatD0%
1 Jan 2022$36.7M$3.94M – $55.9M$34.6M (-6%)after a round12flatD0%
1 Feb 2022$36.7M$3.74M – $55.9M$34.4M (-6%)after a round12flatD0%
1 Mar 2022$36.6M$3.58M – $55.8M$34.2M (-7%)after a round12flatD0%
1 Apr 2022$36.4M$3.40M – $55.4M$34.0M (-7%)after a round12flatD0%
1 May 2022$36.2M$3.24M – $55.1M$33.8M (-7%)after a round12flatD0%
1 Jun 2022$36.0M$3.07M – $54.8M$33.6M (-7%)after a round12flatD0%
1 Jul 2022$35.8M$2.93M – $54.5M$33.4M (-7%)after a round12flatD0%
1 Aug 2022$35.6M$2.78M – $54.1M$33.1M (-7%)after a round12flatD0%
1 Sep 2022$35.3M$2.64M – $53.8M$32.9M (-7%)after a round12flatD0%
1 Oct 2022$35.1M$2.52M – $53.5M$32.7M (-7%)after a round12flatD0%
1 Nov 2022$36.7M$2.39M – $55.9M$36.7M (0%)after a round12unknownD0%
1 Dec 2022$36.7M$2.28M – $55.9M$36.7M (0%)after a round12unknownD0%
1 Jan 2023$36.7M$2.16M – $55.9M$36.7M (0%)after a round12unknownD0%
1 Feb 2023$36.7M$2.06M – $55.9M$36.7M (0%)after a round12unknownD0%
1 Mar 2023$36.7M$1.96M – $55.9M$36.7M (0%)after a round12unknownD0%
1 Apr 2023$6.08M$1.87M – $37.2M$4.44M (-27%)after a round10downD91%
1 May 2023$5.87M$1.78M – $36.9M$4.44M (-24%)after a round10downD91%
1 Jun 2023$5.66M$1.69M – $36.6M$4.43M (-22%)after a round10downD91%
1 Jul 2023$5.46M$1.61M – $36.3M$4.43M (-19%)after a round10downD91%
1 Aug 2023$6.23M$1.53M – $37.7M$5.35M (-14%)after a round10unknownD84%
1 Sep 2023$6.96M$1.45M – $38.6M$6.24M (-10%)after a round10unknownD77%
1 Oct 2023$7.74M$2.31M – $39.6M$7.19M (-7%)after a round14growingD71%
1 Nov 2023$8.55M$2.45M – $40.4M$8.19M (-4%)after a round14growingD65%
1 Dec 2023$9.39M$2.60M – $41.3M$9.23M (-2%)after a round14growingD60%
1 Jan 2024$10.3M$2.76M – $42.2M$10.3M (0%)after a round14growingD55%
1 Feb 2024$11.4M$3.00M – $43.1M$11.4M (0%)after a round14growingD51%
1 Mar 2024$12.4M$1.53M – $43.6M$13.2M (+7%)after a round13upD47%
1 Apr 2024$13.5M$1.56M – $44.4M$14.3M (+6%)after a round13upD43%
1 May 2024$14.6M$1.58M – $45.1M$15.4M (+5%)after a round13upD40%
1 Jun 2024$15.7M$1.60M – $45.8M$16.5M (+5%)after a round13upD36%
1 Jul 2024$17.0M$4.13M – $47.1M$17.8M (+5%)after a round18growingD34%
1 Aug 2024$18.1M$4.34M – $47.7M$18.9M (+5%)after a round18growingD31%
1 Sep 2024$19.1M$4.55M – $48.3M$19.9M (+4%)after a round18growingD28%
1 Oct 2024$20.1M$4.74M – $48.9M$20.9M (+4%)after a round18growingD26%
1 Nov 2024$21.1M$4.93M – $49.4M$21.9M (+4%)after a round24growingD24%
1 Dec 2024$22.1M$5.11M – $49.9M$22.8M (+3%)after a round24growingD22%
1 Jan 2025$23.0M$5.28M – $50.4M$23.7M (+3%)after a round24growingD20%
1 Feb 2025$23.9M$5.44M – $50.8M$24.5M (+3%)after a round24growingD19%
1 Mar 2025$25.3M$6.22M – $54.6M$25.3M (0%)after a round24growingD17%
1 Apr 2025$26.1M$6.39M – $54.7M$26.1M (0%)after a round24growingD16%
1 May 2025$26.8M$6.56M – $54.8M$26.8M (0%)after a round24growingD15%
1 Jun 2025$27.5M$6.71M – $54.9M$27.5M (0%)after a round24growingD13%
1 Jul 2025$28.1M$6.85M – $55.0M$28.1M (0%)after a round24growingD12%
1 Aug 2025$36.7M$8.75M – $55.9M$36.7M (0%)after a round53growingC0%
1 Sep 2025$36.7M$8.75M – $55.9M$36.7M (0%)after a round73growingC0%
1 Oct 2025$36.7M$8.75M – $55.9M$36.7M (0%)after a round73growingC0%
1 Nov 2025$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 Dec 2025$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 Jan 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 Feb 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 Mar 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 Apr 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round89growingC0%
1 May 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round219growingC0%
1 Jun 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round219growingC0%
1 Jul 2026$36.7M$8.75M – $55.9M$36.7M (0%)after a round219growingC0%
21 Jul 2026$7.5B$6.5B – $15.5B$13.5B (+80%)after a round268growingB0%
1 Aug 2026$7.6B$6.5B – $15.5B$13.5B (+77%)after a round268growingB0%
1 Sep 2026$8.0B$6.5B – $15.5B$13.5B (+68%)after a round268growingB0%
10 Sep 2026$18.0B$15.6B – $31.1B$27.0B (+50%)after a round268growingB0%
1 Oct 2026$18.4B$15.6B – $31.1B$27.0B (+46%)after a round440growingB0%
24 Oct 2026$18.9B$15.6B – $31.1B$27.0B (+43%)after a round440growingB0%

Key facts about Fluidstack

Founded
2021
Headquarters
London, United Kingdom
Employees
about 440 +503% in a year
Total raised
$2.33B
Funding rounds
3
Last round
Series B Sep 2026

Fluidstack was founded in 2021 by Cesar Maklary, Gary Wu and Jamie Cox.

Fluidstack funding history

Fluidstack has 3 funding rounds on record, from Feb 2019 to Sep 2026, $2.33B in total. The latest disclosed valuation is $18.00B post-money (Series B, Sep 2026).

  1. Series B 9 Sep 2026

    Led by Jane Street Capital.

    Sources: 7gc.co, techtimes.com, techjacksolutions.com

    $1.50B

    $18.00B post-money

  2. Series A 20 Jul 2026

    Led by Situational Awareness.

    Sources: fluidstack.io, cryptobriefing.com, 7gc.co

    $830M

    $7.50B post-money

  3. Seed 20 Feb 2019

    With Seedcamp, Mercuri, 7gc&co, Episode 1, Founders Factory.

    $3.0M

Fluidstack investors

7 investors have backed Fluidstack; Jane Street Capital and Situational Awareness led at least one round.

  • Jane Street Capital lead
  • Situational Awareness lead

What Fluidstack does

Fluidstack works in hosting & cloud infrastructure providers, with 9 recorded offerings and customers in artificial intelligence and government.

FLUIDSTACK LIMITED is a British company engaged in AI cloud platform solutions, with a focus on GPU clusters and AI infrastructure. The company provides products such as bare-metal operating systems for AI infrastructure and workload monitoring and optimization tools, serving AI labs, governments, and enterprises globally, with a presence in the United States and Europe. Fluidstack is certified for GDPR and SOC 2 TYPE 2 compliance.

Description from Veridion's company data.

Products and services

  • AI Infrastructure Solutions Development
  • GPU Cluster Provisioning and Orchestration
  • Bare-Metal AI OS Development
  • AI Infrastructure Monitoring and Remediation Services
  • Private Cloud Solutions Delivery
  • Custom Data Center Deployment
  • High-Performance Cluster Management Services
  • AI Project Scalability Solutions
  • Secure AI Infrastructure Services

Markets

  • Artificial Intelligence
  • Government

Technology

  • AI Cloud Solutions
  • GPU Cluster Technology
  • Bare-Metal OS for AI Infrastructure
  • Monitoring and Remediation Tool for AI Infrastructure

Certifications

  • GDPR compliant
  • SOC 2 TYPE 2
  • ISO27001

Business model

  • Business-to-Business
  • Service Provider
  • Software-as-a-Service
  • Enterprise

Industry codes (NAICS)

  • 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 70% match
  • 513210 Software Publishers 30% match

Questions about Fluidstack

What is Fluidstack worth?

Valuation $18.9B (range $15.6B to $31.1B), as of 24 Oct 2026. The last disclosed valuation was $18.00B (Series B, Sep 2026).

Has Fluidstack raised money?

Fluidstack has 3 funding rounds on record, from Feb 2019 to Sep 2026, $2.33B in total. The latest disclosed valuation is $18.00B post-money (Series B, Sep 2026).

Who has invested in Fluidstack?

Jane Street Capital, Situational Awareness, 7gc&co, Episode 1, Founders Factory and Mercuri, and 1 more. Lead investors include Jane Street Capital and Situational Awareness.

How many people work at Fluidstack?

About 440, up 503% over the last year. Headcount grew from 11 in Jan 2021 to 440 in Sep 2026.

What does Fluidstack do?

Fluidstack works in hosting & cloud infrastructure providers, with 9 recorded offerings and customers in artificial intelligence and government. Its main offerings are AI infrastructure solutions development, GPU cluster provisioning and orchestration and bare-metal AI OS development.

When was Fluidstack founded, and where is it based?

Fluidstack was founded in 2021 and is based in London, United Kingdom. It has about 440 employees, up 503% over the last year.

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