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Home›
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Sigma Partners
AddedFeb 13, 2024
UpdatedJun 28, 2026
Sigma Partners

Sigma Partners

Operating

Sigma Partners, a venture capital firm since 1984, manages over $2B, investing in early-stage companies.

Location
Boston, MA, US
Founded
1984
Firm
Compare
Portfolio
Employees
Website

Sigma Partners is a venture capital firm that focuses on early-stage investments. With over $2 billion under management, the firm has been active since 1984, investing in a wide range of technology sectors. Sigma Partners typically participates in Series A and B rounds, though they also engage in later-stage investments.

Notable portfolio companies include DocuSign, Strava, Pindrop, and Upwork. The firm's long-standing presence in the venture capital industry and its substantial assets under management suggest a deep network and extensive experience in nurturing startups. Sigma Partners likely provides strategic guidance and operational support to its portfolio companies, leveraging its decades of investment expertise.

Sigma Partners - Portfolio Snapshot

Portfolio activity breakdown across disclosed investments and stages

Total Investments124
Current Portfolio Count35
Total Portfolio Exits6

Top Investment Stages

Series B37 (33.6%)
Series A25 (22.7%)
Series C20 (18.2%)
Series Unknown18 (16.4%)
Series D10 (9.1%)

Stage Mix

Series B 34%Series A 23%Series C 18%Series Unknown 16%Series D 9%

Concentration shown as share of disclosed investments by stage.

Recent Investments

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Upwork

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Docusign logo

Docusign

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Sigma Partners - Classification

NAICS
  • 520000Finance and Insurance
  • 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
  • 523900Other Financial Investment Activities
  • 523990All Other Financial Investment Activities
  • 523999Miscellaneous Financial Investment Activities
SIC
  • 6700Holding And Other Investment Offices
  • 6790Miscellaneous Investing
  • 6799Investors, Not Elsewhere Classified
Show 6 more industry codes
NAICS
  • 525000Funds, Trusts, and Other Financial Vehicles
  • 523910Miscellaneous Intermediation
  • 523940Portfolio Management and Investment Advice
SIC
  • 6000Depository Institutions
  • 6720Investment Offices
  • 6722Management Investment Offices, Open-end