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Fluidstack

FL
AINew York, United StatesFounded 2017Website@fluidstack
#40 by valuationHype68

Fluidstack provides cloud infrastructure for AI with GPU clusters, orchestration, and monitoring for intensive workloads. The company delivers Atlas OS, a bare-metal operating system for rapid provisioning and smooth management of AI hardware, along with Lighthouse, a platform that monitors and optimizes system performance. Its infrastructure is designed for single-tenant deployment, isolating hardware, network, and storage to maintain security and operational control. Fluidstack supports enterprises, research labs, and government organizations by enabling scalable, dedicated AI compute resources. The platform integrates workload management, performance monitoring, and secure access to facilitate AI training, inference, and data processing. Fluidstack’s technology allows organizations to deploy compute resources quickly while maintaining oversight of system health, workload efficiency, and operational governance.

Founded by Cesar Maklary (CEO, Founder), Gary Wu (Founder), Jamie Cox (Founder)

Blended valuation$18.1B$18.8B secondary
Valuation history
Weekly blended valuation with priced funding rounds marked on the timeline.
$19.2B
blended valuationfunding round
May 26, 2025$3.9BOct 5, 2026
All rounds
5 funding rounds, newest first.
RoundAnnouncedRaisedPost-money
Series BSep 3, 2026$1.5B$18B
Series AJan 22, 2026$830M$7.5B
Series AFeb 1, 2025$200M—
RoundOct 1, 2024$24.7M—
SeedMar 19, 2019$3M—
Investors
7 investors across all rounds.
  • SE
    Seedcamp
  • CA
    Cacti
  • JS
    Jane Street
  • SA
    Situational Awareness
  • 7&
    7GC & Co
  • ME
    Mercuri
  • SC
    Stack Capital
Secondary market activity
Recent buy and sell interest for Fluidstack shares on the secondary market.
KindImplied valuationPrice / shareDate
Bid$19.2B$151.69Sep 23, 2026
Bid$19.2B$151.69Sep 22, 2026
Bid$19.2B$151.69Sep 14, 2026

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Data as of Oct 15, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.