VC firm
Hallstone
Also known as Hallstone Ventures Fund 1, LP, Hallstone Ventures, LLC
- Investor type
- VC
- Investing status
- Activeas of 2026-09-28
- Headquarters
- Los Angeles, California, United States
- Latest fund size
- $11.1MSEC amount sold, as of 2026-10-13Source (opens in a new tab)
- Funds
- 1
- Legal name
- Hallstone Ventures, LLC
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Record updated 23 October 2026
About
Hallstone Ventures is a Los Angeles-based seed fund (Fund I, now deploying) backing seed-stage founders building AI-driven infrastructure for media, entertainment, and advertising, across creator infrastructure, adtech and monetization rails, immersive/spatial media, and frontier media infrastructure. The firm is led by Founder and Managing Partner Seth Hallen and backed by an LP network of roughly 70 senior media/tech operators who support diligence, workflow validation, and buyer introductions.
Investment approach
- Thesis
- “AI is accelerating a rebuild of the infrastructure behind how media is created, distributed, measured, protected, and monetized. Hallstone was formed to back the founders building those foundational layers.”Source (opens in a new tab)
- Investing status notes
- "Hallstone Ventures Fund I is now deploying." Portfolio page: "One new company added each month."
Funds
- Hallstone Ventures Fund 1, LP
- $11.1MVintage 2025, Main fund, SEC amount sold
SEC registration
- SEC CIK
- 2054954
Locations
- Headquarters
- Los Angeles, California, United States
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