Founder Factor is a YC alumni-led venture capital firm backing Y Combinator startups, with a focus on the top 10% of each batch. It uses proprietary AI screening and alumni diligence, invests alongside Tier 1 VCs, and supports portfolio companies with European capital and operating reach. The firm has seed-stage investment evidence and is relevant for founders in AI, life sciences, healthtech, fintech and energy across the United States, Europe and the United Kingdom.