VC fund profile · evidence-aware directory data
Cantos stages, portfolio and investment profile
San Francisco–based early-stage firm founded in 2021, investing at the intersection of software, hardware, and wetware. Cantos closed Fund IV at $70M in 2026, backing defense, climate, and deep-tech founders at pre-seed and seed.
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Stage-based planning range
$250K–$3M
This is a planning range inferred from stage coverage, not a firm-disclosed check size.
Methodology: Stage bucket inferred from the rounds a fund leads or invests in.
No firm-specific check-size disclosure is recorded.
Investment stages
Leads: Pre-Seed, Seed
Participates: Pre-Seed, Seed, Series A
Sector focus
hardware-semiconductors
Geography
San Francisco, CA
Founded 2021
Fund size / AUM
Not recorded
A separate fund-size evidence record is not yet available.
Portfolio in our directory
4
Linked startup profiles
Recent tracked investment
Not recorded
No dated round explicitly links this fund.
Rounds they lead
Rounds they invest
Last verified: 2025-09-28T14:39:14.324Z. Check-size evidence is labeled by basis so planning estimates are not presented as firm disclosures.
Related reading
Recent investments, portfolio developments and our research on this investor.
Portfolio companies we track
Startups in our directory that list Cantos as an investor (4 total).
- Castelion Hypersonic strike missiles built for industrial-rate output, starting with Blackbeard.
- Heaviside Industries Autonomous precision munitions across air, land, and sea for U.S. and allied forces.
- Radiant Portable micro-nuclear reactors for remote power and defense applications.
- Radiant Nuclear Portable microreactor company building Kaleidos for remote and defense energy.
Last updated:
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