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William Blair
AddedFeb 15, 2024
UpdatedJul 9, 2026
William Blair

William Blair

Operating

William Blair is a Chicago-based investment banking and asset management firm.

Location
Chicago, IL, US
Founded
1935
Firm
Compare
Portfolio
Employees
News
Website

William Blair & Company, L.L.C. is a Chicago-based investment banking and asset management firm founded in 1935. It provides investment banking, investment management, equity research, and private wealth management services to corporate, institutional, and individual clients.

The investment banking group advises companies and financial sponsors on mergers, acquisitions, and capital raises, including transactions for Thoma Bravo, Centauri Health Solutions, and Prime Trust, while its research analysts cover sectors spanning financial services, healthcare, technology, and consumer goods. An affiliate of the firm has also participated in growth-stage financing rounds such as the Halo Investing 2019 Series B.

William Blair - Portfolio Snapshot

Portfolio activity breakdown across disclosed investments and stages

Total Investments14
Current Portfolio Count8
Total Portfolio Exits2

Top Investment Stages

Series Unknown6 (46.2%)
Post Ipo Equity3 (23.1%)
Series B2 (15.4%)
Initial Public Offering1 (7.7%)
IPO1 (7.7%)

Stage Mix

Series Unknown 46%Post Ipo Equity 23%Series B 15%Initial Public Offering 8%IPO 8%

Concentration shown as share of disclosed investments by stage.

Recent Investments

Prime Trust logo

Prime Trust

Halo Investing logo

Halo Investing

Monday.com logo

Monday.com

Docusign logo

Docusign

Athersys logo

Athersys

Inuvo logo

Inuvo

HouseValues logo

HouseValues

Nuvasive logo

Nuvasive

Chicken Out Rotisserie logo

Chicken Out Rotisserie

Pdquick logo

Pdquick

American Blinds and Wallpaper logo

American Blinds and Wallpaper

Fob.Com logo

Fob.Com

William Blair - Classification

Also Known As
  • William Blair & Company, L.L.C.
Tags
  • Financial Services
NAICS
  • 520000Finance and Insurance
  • 522000Credit Intermediation and Related Activities
  • 522100Depository Credit Intermediation
  • 522110Commercial Banking
SIC
  • 6000Depository Institutions
  • 6020Commercial Banks
ISIC
  • 7020Management consultancy activities
Show 15 more industry codes
NAICS
  • 540000Professional, Scientific, and Technical Services
  • 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
  • 541000Professional, Scientific, and Technical Services
  • 523900Other Financial Investment Activities
  • 541600Management, Scientific, and Technical Consulting Services
  • 523990All Other Financial Investment Activities
  • 541610Management Consulting Services
  • 523999Miscellaneous Financial Investment Activities
  • 541613Marketing Consulting Services
SIC
  • 6700Holding And Other Investment Offices
  • 8700Engineering, Accounting, Research, Management, And Related Services
  • 6720Investment Offices
  • 8740Management And Public Relations Services
  • 6722Management Investment Offices, Open-end
  • 8742Management Consulting Services