Empowering Tomorrow’s Deep Tech Leaders
$25M Seed fund for deep tech with wide IP moats




Fueling the Future with AI-Powered Technology Investments
Castle Fund is dedicated to advancing groundbreaking solutions in biotech, energy, aerospace, robotics, chips and AI infra. We seek founders building defensible technologies that create lasting impact.
Winning Track Record
178
Startups Backed
3.7X
MOIC
41%
IRR
14
Exits
Team of Deep Tech Experts

Daniel Gould (Managing Director): Ex-founder, prior Venture Partner at a deep tech seed fund, and manages a 5400 LP AngelList syndicate (100+ deals, $20M AUM).
Venture partner was ex-Blackstone, fractional CFO for biotech startups, and venture partner for multiple funds.
Key advisor was GP of a deep tech Series A Fund that co-invested with Daniel’s prior fund, has a 7.2X MOIC and 2.8X DPI as an angel investor, and is a global celebrity.
Affiliates: