Deep33 Ventures is a specialized venture capital firm established in 2026 to address critical infrastructure bottlenecks within the global artificial intelligence boom. The firm focuses on the "US-Israel allied infrastructure corridor," linking Israeli deep tech engineering with American industrial and governmental demand. Deep33 operates on an expert-led model, drawing its leadership from elite military technology units and serial entrepreneur backgrounds to guide companies from the post-research stage to large-scale commercial breakthroughs.
In January 2026, Deep33 Ventures emerged from stealth with the launch of its inaugural $150 million fund. The vehicle reached a first close of $100 million, with the remaining capital expected to be secured by the end of the first quarter of 2026. Major backers include Arkin Capital, alongside a group of private institutional investors from both the United States and Israel.
The fund is designed to capitalize on the massive capital expenditure cycles of tech giants and government grants for critical infrastructure, specifically targeting bottlenecks in GPU utilization, energy efficiency, and post-quantum encryption.
Leadership
The fund is led by Managing Partners Lior Prosor, a former partner at Hanaco Ventures, and Michael Broukhim, a West Coast-based serial entrepreneur and angel investor known for early bets on SpaceX and Stripe. Lior Susan, founder of Eclipse Ventures, serves as the firm's Chairman. The specialized investment verticals are headed by domain experts, including Col. (res.) Joab Rosenberg for quantum, Maj. (res.) Yael Barsheshet for AI infrastructure, and Ori Amsalem for energy.
Investment Strategy
Deep33 employs a "deep research" strategy to identify immediate infrastructure requirements for the West to maintain a technological advantage.
They typically target early-stage companies that have moved beyond basic R&D but require specialized operational expertise to navigate government relations, regulatory environments, and industrial deployment. The firm is high-conviction and active, providing portfolio companies with direct access to a network of defense, energy, and tech policy experts.
Notable Investments
The fund has already completed five initial investments, which include QuamCore, CyberRidge, and Particle, as well as two undisclosed stealth companies focusing on oil-free chemical production and GPU utilization infrastructure.
Notable Exits
As Deep33 Ventures launched its first fund in early 2026, there are currently no notable exits to report.
Other
Deep33 is uniquely positioned to help startups secure government contracts and grants through its dedicated government relations arm led by Yarden Golan.They are particularly interested in "dual-use" technologies that serve both commercial and national security interests. Founders building in the "hard tech" space will find the firm's focus on solving physics-based constraints—rather than just software scalability—to be a significant differentiator from traditional generalist VCs.
United States
