Jack Zumwalt is Co-Founder and CEO of Kimpton AI (YC P26), building what the team calls the IDE for investors, an AI-native research platform purpose-built for buy-side portfolio managers.

Jack studied Computer Science at the University of Texas at Dallas, joined Goldman Sachs as a detection engineer building algorithms to identify malicious cyber threat actors, and later co-founded Level III Capital, a quantitative hedge fund that raised $10M and ran systematic trading strategies for four years.

At just 21 years old, Jack left Goldman Sachs with co-founder Mauricio Ortiz to launch Level III Capital, earning a $10M mandate from a family office before turning 23, a remarkable signal of institutional trust at an exceptionally early age.

Jack co-founded Kimpton AI in 2025, backed by Y Combinator (Spring 2026 batch), productizing the proprietary research infrastructure built internally at Level III Capital for the broader buy-side market.

Kimpton AI serves hedge funds, family offices, and RIAs by autonomously handling filings, earnings prep, 13F tracking, peer benchmarking, and trade writeups, freeing portfolio managers to focus solely on high-conviction decision-making.