Prefix Capital is a venture capital firm. Based in San Francisco, California, United States. The known portfolio counts 8 companies, including Vidmob, Via, Symmetry Systems, Vidrovr, Base Operations and Aligned Carbon.
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Investment focus
- Focus
- Cloud InfrastructureComputer VisionCybersecurityData AnalyticsDeveloper ToolsEnterprise SaaSMachine LearningVideo AI
Who to pitch at Prefix Capital
Prefix Capital portfolio companies (8)
- Vidmob
- Via
- Symmetry Systems
- Vidrovr
- Base Operations
- Aligned Carbon
- Neocortix Cloud Services
- Neutrolis
Co-investors
Funds that share portfolio companies with Prefix Capital.
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About Prefix Capital
The firm's listing covers sectors AI, Climate and SaaS, and focus areas Cloud Infrastructure, Computer Vision, Cybersecurity and Data Analytics; known deals cluster at Growth, Seed and Series A.
The contact to approach at Prefix Capital is Byron Alsberg (Co-founder/Managing Partner@Prefix Capital).
Across the known portfolio, 20 co-investors appear alongside Prefix Capital, including JettyCove, Stampede Ventures and BuildGroup.
Frequently asked questions
What is Prefix Capital?
Prefix Capital is a venture capital firm based in San Francisco, California, United States, with a known portfolio of 8 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Prefix Capital invest in?
Listed sectors include AI, Climate and SaaS; listed focus areas include Cloud Infrastructure, Computer Vision, Cybersecurity and Data Analytics. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Prefix Capital invest at?
The known deals of Prefix Capital include Growth, Seed and Series A rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Prefix Capital?
One person at Prefix Capital is on file, listed as a contact for the firm, with their own profile page.
How do I contact Prefix Capital?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The one person attached to the firm has their own page, which shows whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal