Alumni Ventures built a "network-powered" retail VC platform that aggregates thousands of accredited individuals into professionally managed funds, allowing people to write checks as low as ~$10k while accessing large, diversified venture portfolios—making it America's largest VC firm for individual investors. The firm runs a deliberately non-controlling, co-investor-only strategy where it does not lead rounds, set terms, or take board seats, instead slotting into rounds alongside elite firms like Sequoia and Bessemer while treating its 750k+ subscriber base and ~1,400+ venture-backed founders as a scaled operating asset through structured "CEO Services."