David Portnoy
Venture investor in New York City
New York City, New York
David Portnoy, Venture investor in New York City is an active investor based in New York City, New York. This profile covers what David Portnoy backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestment Partner
- Stages
- SeedSeries ASeries BLate Stage Venture
- Invests in
- Manufacturing & IndustrialPropTech & Real Estate
- Location
- New York City, New York
- Typical check
- $2M
- Past investments
- 6
Notable investments
UnifraxUnison Site Management
Presidio
Lakeside Energy
Advanced Drainage Systems
Anthony InternationalHow to reach David Portnoy
Angels and operators like David Portnoy reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
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Frequently Asked Questions
What does David Portnoy invest in?
David Portnoy invests in Manufacturing & Industrial and PropTech & Real Estate, typically at Seed, Series A, Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does David Portnoy invest at?
David Portnoy typically invests at Seed, Series A, Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is David Portnoy's typical check size?
David Portnoy typically writes checks around $2M. Use it as a signal for whether your raise fits their stage.
How do I contact David Portnoy?
Unlock David Portnoy's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.