Cantos

Cantos is a pre-seed and seed venture firm investing in companies applying technology to the physical world. The firm organizes its focus around three stated pillars: abundance, resilience of critical infrastructure and ecosystems, and U.S. competitiveness in advanced technologies. Its portfolio spans defense and aerospace, nuclear and other energy, advanced materials and manufacturing, robotics, satellites and biotech. Fund IV writes checks of roughly $1.5M to $4M across about 22 planned investments.

$70M (Fund IV, 2026) AUM 65/100 Power Score™ 2016 Founded San Francisco, CA
Deep Tech Defense Tech Climate Biotech Space
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Key Partners & Leadership

General Partner
Partner
Principal

Firm Timeline

2016
Ian Rountree founds Cantos.
2021
Amee Kapadia joins the firm.
2022
Announces Cantos 3, a $50M fund for pre-seed and seed investments.
2024
Grant Gregory joins as Partner from a16z's American Dynamism team.
2026
Closes Fund IV at $70M.