David Aizenberg is an angel investor and operator angel based in New York City, United States. The known portfolio counts 8 companies: Helm.ai, Carbyne, Ethena, Mark43, One Concern, Praava Health, Doxel and Tyfone.
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Investment focus
- Stage
- Seed
Contacts
David Aizenberg portfolio companies (8)
- Helm.ai
- Carbyne
- Ethena
- Mark43
- One Concern
- Praava Health
- Doxel
- Tyfone
Investor Profile
The known portfolio sits in sectors FinTech, Hardware, Healthcare and SaaS, and focus areas Credit, Developer Tools, Enterprise SaaS and Trading Platform.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether David Aizenberg matches their raise.
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Frequently asked questions
Who is David Aizenberg?
David Aizenberg is an angel investor and operator angel based in New York City, United States with 8 known investments on file, among them Helm.ai, Carbyne and Ethena. The sections above list the sectors and stages attached to that record.
What does David Aizenberg invest in?
Listed sectors include FinTech, Hardware, Healthcare and SaaS; listed focus areas include Credit, Developer Tools, Enterprise SaaS and Trading Platform. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does David Aizenberg invest at?
The known deals of David Aizenberg include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact David Aizenberg?
An email address, a phone number and a LinkedIn page are on file for David Aizenberg. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal