EP035: "From Citadel & Millennium to Building AI for the Buy-Side" with Eric Moster

In the new Pitch The PM series, The Wall Street Entrepreneur premier, Doug Garber speaks with former Citadel colleague, Eric Moster, CEO of Portrait Analytics and former portfolio manager at Millennium and Analyst at Surveyor Capital. Eric shares his transition from hedge fund investing into building AI-powered research tools purpose-built for institutional investors. The discussion explores how Portrait Research helps analysts monitor information flow, generate investment ideas, and accelerate deep fundamental research workflows. Eric explains the evolution of the platform from productivity software into a customized intelligence engine capable of identifying new opportunities based on an investor’s specific framework. They also examine the challenges of building AI products for hedge funds, balancing signal versus noise, scaling a startup, and why narrowing product focus became critical to Portrait’s growth strategy.  _____________________________________________________________[00:00:00] Introduction to Eric Moster and his move from investing to entrepreneurship.[00:00:36] Eric’s background at Citadel, Millennium, and Surveyor Capital.[00:01:14] How ChatGPT changed Eric’s view of AI and investing.[00:02:24] Joining Portrait Research alongside founder David Plon.[00:03:55] Eric’s path from first business hire to CEO.[00:05:28] Portrait’s evolution and product roadmap.[00:05:36] Overview of Portrait’s AI research and monitoring tools.[00:06:40] Tracking material information across industries.[00:08:04] Doug’s experience using Portrait.[00:08:48] Data quality challenges and filtering noise.[00:10:55] Using Reddit and alternative sources for investment insights.[00:11:50] Monitoring sentiment shifts and public reactions.[00:12:51] Determining what information is truly material.[00:14:29] Management guidance and investor interpretation.[00:16:55] Embedding hedge fund expertise into AI systems.[00:18:18] Why idea generation is the highest-value workflow.[00:20:42] Introduction to Portrait Intelligence.[00:22:03] Applying custom investment frameworks at scale.[00:24:03] Ranking opportunities based on framework fit.[00:25:10] Moving from productivity gains to revenue generation.[00:26:44] Learning from historical investment decisions.[00:29:41] Identifying recurring behavioral patterns.[00:30:34] Conducting objective investment postmortems.[00:31:35] Generating detailed turnaround investment reports.[00:33:58] Expanding the investment funnel with AI.[00:34:37] Why every framework is customized.[00:35:44] Ideal customer profiles and use cases.[00:36:52] Customer growth and adoption metrics.[00:37:55] Team growth, runway, and go-to-market strategy.[00:39:22] Pricing and product positioning.[00:39:59] Lessons on startup focus and prioritization.[00:41:20] Products Portrait intentionally shut down.[00:43:43] Final thoughts on entrepreneurship and investing. Links: Doug Garber on LinkedIn: https://www.linkedin.com/in/doug-garber-42aa508  Eric Moster on LinkedIn: https://www.linkedin.com/in/eric-moster-3006779 📩 Subscribe to our substack: https://pitchthepm.substack.com/