VC fund profile · evidence-aware directory data
Castor Ventures stages, portfolio and investment profile
Castor Ventures is an Alumni Ventures-managed venture investing community for Massachusetts Institute of Technology (MIT) alumni and eligible accredited investors. It offers diversified venture-fund exposure and individual deal syndications alongside external lead VCs. Alumni affiliation describes the investor community, not an exclusive mandate to invest in MIT-connected companies. It is not a separate, independently managed venture firm.
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Stage-based planning range
$1M–$10M
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: Not recorded
Participates: Pre-Seed, Seed, Series A, Series B, Series B+, Series C, Growth
Sector focus
generalist-tech
Geography
Alumni Ventures management: Manchester, New Hampshire, USA; community: MIT alumni
Founded Not recorded
Fund size / AUM
Not recorded
A separate fund-size evidence record is not yet available.
Portfolio in our directory
3
Linked startup profiles
Recent tracked investment
Not recorded
No dated round explicitly links this fund.
Rounds they lead
Rounds they invest
Last verified: 2026-10-29. Check-size evidence is labeled by basis so planning estimates are not presented as firm disclosures.
Portfolio companies we track
Startups in our directory that list Castor Ventures as an investor (3 total).
- Ayar Labs AI interconnect company making co-packaged optical I/O; completed a $500M Series E at $3.75B in March 2026 and announced a further $150M expansion in September.
- Cohere Enterprise AI models and deployment platform pursuing a proposed acquisition of autonomous security company AISLE.
- Groq AI inference neocloud operating NVIDIA-architecture clusters after exiting the pure LPU-chip challenger path.
Last updated:
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