Investors / IceNine
IceNine
Venture capital
IceNine is an early-stage venture capital firm that invests in founders building industrial and critical technology companies. It describes itself as working closely with founders on technical, operational and commercial decisions, drawing on team experience in hardware, industrial R&D and government programs.
Invests inAI & Machine Learning
In its own wordsreindustrializationdeep techhardwaredefenseenergycritical technology
Your fit with IceNine
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsIceNine lists 14 checked portfolio companies on its own site. Its largest themes are AI & Machine Learning (61%), Industrial & Manufacturing (13%) and Robotics & Hardware (9%). 86% of its companies are based in United States. It invests most often alongside Ambition Capital, Seraphim Space and Space Capital.
No funding round on record names IceNine yet, so the figures come from its portfolio page.
Round figures show recent activity, not IceNine's whole history. Rounds on record name 0 companies; its own site lists 14. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 36th | 14 companies |
| Recent activity | 46th | 0 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 52th | 0% of companies confirmed by a round |
| Sector focus | 89th | 61% in its largest sector |
| Reach | 58th | 3 countries |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers14100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 61% | 18% |
| Industrial & Manufacturing | 13% | 7% |
| Robotics & Hardware | 9% | 1% |
| Space & Defense | 9% | 3% |
| Education | 4% | 7% |
| Real Estate & Construction | 4% | 3% |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with Ambition Capital
Compare IceNine head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
14 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| D-Orbit provides space logistics and orbital transportation services, including last-mile delivery of satellites and space waste management | Space & Defense | Portfolio page | ||
| Portfolio page | ||||
| Kunin is a company that produces critical metals using ion-exchange technology | Industrial & Manufacturing | Portfolio page | ||
| Monumental Labs creates stone ornaments and structures, and sculptures, using a combination of robotic milling and hand finishing. | Industrial & ManufacturingReal Estate & Construction | Portfolio page | ||
| Mulberry Industries manufactures high-grade permanent magnets and advanced electrical systems, including electric motors and permanent magnet generators. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| OpenLight enables customers to design their own PASIC using its Process Design Kit (PDK) and also designs and manufactures PASICs for customers. | Robotics & Hardware | Portfolio page | ||
| Portal builds spacecraft that move missions across orbits at speeds others can't match, to distances others can't reach. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Seasats develops and produces autonomous ocean vessels for surveillance and monitoring missions | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Sublime Nuclear is building a domestic nuclear fuel supply chain in the US | EducationIndustrial & Manufacturing | Portfolio page | ||
| Tiberius Aerospace develops and manufactures defense systems, including missiles and analytics platforms. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| True Anomaly designs and builds spacecraft, software, and payloads for space superiority | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Volantis develops photonic AI infrastructure for model inference | AI & Machine LearningRobotics & Hardware | Portfolio page | ||
| Xona provides location services and navigational intelligence through its Pulsar ecosystem, offering advanced positioning, navigation, and timing infrastructure. | AI & Machine LearningSpace & Defense | Portfolio page |
About this data
site last read 8 Nov 2026- Site
- icenine.vc
- Last read
- 8 Nov 2026
- Watching since
- 8 Nov 2026
- Companies checked
- 14
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
Get IceNine's profile as data
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