RadixArk
Builds open-source AI inference and training infrastructure, commercializing the SGLang engine
$100MSeed
Role not disclosedWC
Walden Catalyst Ventures
waldencatalyst.com ↗Activity from announced rounds
Activity in this selectionSeed
Walden Catalyst Ventures backs early-stage deep-technology companies, combining investment with operating expertise and international networks.
Investment focus
The firm’s stated focus includes data, AI, cloud, fintech and digital biology across the US, Europe and Israel. Its team works with founders turning scientific and engineering advances into businesses.
Activity recorded by RoundOS
RoundOS records include Nearfield Instruments’ semiconductor metrology, Polaris Electro-Optics’ optical interconnects, RadixArk’s AI infrastructure and OPAQUE’s confidential computing. NeoCognition adds self-learning software agents to the recorded examples. These financings show activity available in the database; they are not a complete portfolio or the partners’ earlier investing histories.
- Rounds participated in
- 2
- Confirmed lead rounds
- — 2 roles undisclosed
- New companies
- 2 First participation on record · 0 follow-on
- Funding in participating rounds
- $140M 2 disclosed · full round size, not this investor’s share
By stage
By primary sector
By country
Rounds
2 in this selectionNeoCognition
Develops self-learning AI agents that become specialized experts
$40MSeed
Role not disclosed