Altimeter

Activity from announced rounds

All recorded activity

Altimeter is an investment firm identified in financing coverage for Hadrian and in Crusoe’s own funding announcement.

Recorded funding activity

Crusoe builds AI infrastructure spanning GPU cloud services, data centers and modular computing systems. Other activity recorded here includes a lead role in SciFin’s seed financing for enterprise revenue operations and participation in Castelion’s hypersonic defence systems. These examples are specific financing relationships rather than a complete firm strategy.

Sources
Rounds participated in
10
Confirmed lead rounds
1
6 roles undisclosed
New companies
10
First participation on record · 0 follow-on
Funding in participating rounds
$5.8B
9 disclosed · full round size, not this investor’s share

By stage

Series C+8
Seed1
Series B1

By primary sector

AI4
Defense tech2
Climate tech1
Cybersecurity1
Hardware1
1 more
Space tech1

By country

United States10

Rounds

10 in all activity
Crusoe

AI infrastructure combining GPU cloud services, managed AI tools, large-scale data centers and modular AI factories for model developers and enterprises.

>$3.9BSeries F
Participant
SciFin

SciFin gives enterprise revenue teams a continuously updated view of accounts, deals, forecasts, territories and customer conversations. Its AI companion, Pixie, uses that connected context to answer business questions, identify risks, prepare reports and recommend follow-up actions.

$44MSeed
Lead
Castelion

Builds low-cost, mass-producible hypersonic strike missiles for defense

$1BSeries C
Role not disclosed
Hadrian

Builds highly automated factories producing defense and aerospace systems

$1.4BSeries D
Participant
Base Power

Base Power builds and operates home batteries that supply backup electricity and help balance the power grid.

$1BSeries D
Participant
K2 Space

Manufactures large, high-power satellites.

$500MSeries D
Role not disclosed
XBOW

Runs autonomous AI agents that continuously probe software for vulnerabilities at machine speed

$120MSeries C
Role not disclosed
Nexthop AI

Provides highly efficient AI networking solutions for hyperscale data centers

$500MSeries B
Role not disclosed
Cerebras Systems

Cerebras Systems develops computing infrastructure for AI.

$1BSeries H
Role not disclosed
Baseten

Builds systems software for AI applications, focusing on inference and model deployment

$300MSeries E
Role not disclosed