Startup profile · funding coverage
Fluidstack funding, valuation and investors
AI data-center and compute infrastructure developer: $830M Series A at $7.5B in January 2026 confirmed by the company; reported September financing placed a >$18B valuation.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Reported financing (Forbes)
$1.5B (media reported) · September 3, 2026
Latest known valuation
>$18B (media reported)
Reported financing (Forbes) · September 3, 2026
Total disclosed equity funding
$2.3B
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
growth · New York, New York, USA
Investors in latest funding
Lead: Jane Street
Overview
Fluidstack develops AI data centers and computing infrastructure for large model-training and inference workloads. It confirmed an $830 million Series A at a $7.5 billion valuation in January 2026; Forbes later reported a $1.5 billion financing at over $18 billion. Its Anthropic infrastructure program is not a $50 billion equity round.
Why Fluidstack is interesting
Fluidstack offers a useful three-way distinction: a company-confirmed $830M January 2026 Series A, a subsequent $1.5B September financing at an $18B-plus mark reported by Forbes, and a $50B US computing-infrastructure buildout associated with Anthropic which is not money invested in Fluidstack equity. The product is power, facilities, deployment engineering and compute hosting, not a small GPU-marketplace app.
Product & use cases
AI computing infrastructure development and large-scale hosting: site selection, power delivery, facility development, custom buildouts, compute deployment and operations for frontier AI labs.
- Develop data centers and power/cooling infrastructure for large AI model training workloads
- Deploy and host clusters for frontier AI models with dedicated facilities and operating controls
- Scale US high-density compute capacity for AI labs and large infrastructure buyers
Key facts
- January 2026 $830M Series A at $7.5B valuation — company confirmed July 20, 2026
- September 3 2026 $1.5B round at >$18B valuation — reported by Forbes; company release not found
- November 12 2025 Anthropic $50B infrastructure program is not a Fluidstack funding round
- Risk focus: power/site contracting, construction capital, deployment timelines and utilization
Funding history (newest first)
Reported financing (Forbes)
2026-09-03 $1.5B (media reported) Valuation: >$18B (media reported)- Jane Street (lead)
Source: Read source · forbes.com
Series A (company-confirmed July 20, 2026)
2026-01 $830M Valuation: $7.5B- Situational Awareness (lead)
Source: Read source · fluidstack.io
Market / IPO context
Note: Forbes reported a valuation above $18B in the $1.5B financing announced September 3, 2026.
Editorial / static context — not a live quote.
FAQs about Fluidstack
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Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.