Tetrad is a venture capital firm backing early-stage companies across the United States, Europe, the United Kingdom, Latin America and MENA. It invests primarily at angel, pre-seed, seed and late seed/early A stages, writes $100k to $1M checks, and has acted as a lead investor at Series A. Sector signals include AI, analytics, fintech, future of work, healthtech, HR tech, SaaS, sports, cleantech, climate and water.