The Most Active Seed-Stage Investors

Activity here means distinct investor-company pairings in deal announcements Altss tracked over the trailing 12 months to 17 July 2026. The seed page counts only early-stage rounds: seed, pre-seed, angel, and Series A. A firm earns credit for a company only when Altss recorded such a pairing. Y Combinator leads the ranking with 153 distinct portfolio companies. Andreessen Horowitz ranks second at 82. General Catalyst places third with 75. Altss tracked more than 100,000 distinct investor-company pairings across all investor types. The 20 firms on this list account for 918 of those pairings. These counts reflect confidence-filtered announcements. The approach surfaces high-volume early-stage players. Accelerators and dedicated seed funds rise on this measure.

This ranking measures activity, not assets under management or fund size. High-volume models lift accelerators and seed specialists above pure AUM leaders. Y Combinator's two batches a year of pre-seed and seed startups produce 153 companies. Multi-stage firms like Andreessen Horowitz and General Catalyst place high through broad early checks across software, AI, and fintech. Geography spreads across the list. United States firms dominate the top ranks, with bases in Mountain View, Menlo Park, Cambridge, and New York. European players include Balderton Capital in London at 50 companies and Seedcamp at 23. India features Peak XV Partners in Bengaluru and Singapore, Inflection Point Ventures in Gurugram, and Blume Ventures in Mumbai. Antler from Singapore adds a global early-stage platform that backs founders from formation. The list reveals how seed activity concentrates among specialized high-throughput investors.

The ranking highlights a seed market where volume models and multi-stage firms coexist at the top. Accelerators like Y Combinator and Antler, plus networks like Alumni Ventures and Inflection Point Ventures, secure places through frequent early pairings. Traditional venture names such as Accel, Khosla Ventures, and Sequoia Capital maintain strong early-stage presence. Insight Partners and Bessemer Venture Partners show multi-stage reach into seed. European and Asian firms fill mid-ranks, underscoring regional seed ecosystems. Counts range from 153 down to 22 for Draper Associates. The top 20 capture 918 pairings from the broader set of more than 100,000. This points to selective concentration in tracked early-stage announcements. Later-stage specialists fall away by design. Every firm on the list links to its Altss profile for deeper portfolio and activity detail.