Money moves in silence. Download 2025 State of Venture Report: a data-driven analysis of active funds, unicorn, and family offices
About usSign in
Status
ACTIVE
Global HQ
San Francisco, United States
Countries of investment
  • USA
Investment stages
  • Seed
Industries
  • Software
  • B2B
About
Prefix Capital is an early-stage venture capital firm specializing in deep tech investments that drive transformative change across industries. Founded by Byron Alsberg, the firm is dedicated to identifying and supporting startups that offer groundbreaking business and technology solutions. With a keen focus on innovation and scalability, Prefix Capital leverages Alsberg's extensive experience in both entrepreneurship and investment to empower visionary founders and foster sustainable growth. By cultivating strategic partnerships and providing tailored resources, Prefix Capital aims to accelerate the development of revolutionary ideas and technologies that shape the future.
Min check size
$500K
Max check size
$5M
Fund size
NPS

Investment Thesis

Prefix Capital focuses on investing in early and growth stage companies with unique technologies and business models. They seek out ventures with strong potential for market impact and scalability.
Lead investor
Co Invest
Number of exits
Preferred contact method

Manager's Experience

With a robust background in technology and healthcare investments, the fund manager has successfully executed over 30 deals across North America and Europe. Their strategic style emphasizes a data-driven approach, enabling effective identification of high-growth opportunities. Noteworthy exits include several successful IPOs and acquisitions, reinforcing their expertise in late-stage investments. Their emphasis on operator-first insights ensures a thorough understanding of market dynamics, facilitating sustainable portfolio growth.

Prefix Capital Contacts Information

Primary contact

Fund number
Vintage Year
Net Internal Rate of Return
Investment Multiple
Capital Allocation
Management Fee
Carried Interest
AUM
Follow-on Investments
Graduation Rate
Write-Off Ratio
Last profile update timestamp