Portfolio
Fund I backed four founders building AI-driven infrastructure at the intersection of media, entertainment, and advertising. One new company added each month.
Hallstone Ventures Fund I is now deploying. Our initial portfolio includes:

ORBES is building robots for space infrastructure, starting with ORB, a patent-pending cinema drone for space stations, and Exo-ORB, a satellite for exterior filming and maintenance.
Visit Orbes →
Building DecisionOS™ for advertising—a new class of software designed to help brands and media companies make better resource allocation decisions. While traditional ad platforms optimize campaigns in isolation, REX evaluates the broader economic system of audiences, channels, creative, budget, and outcomes to determine the highest-probability path to growth.
Visit REX →
Waffle Video is building a provenance-first video data platform and mobile app to deliver rights-cleared, bespoke, annotated spec-driven video datasets for AI companies and enterprises.
Visit Waffle Video →A B2B2C fan creation and activation platform enabling IP-safe, brand-safe, fan-generated content at scale for studios and consumer brands.
Visit Wide Worlds →