William Blair & Company
William Blair is a privately held financial services firm providing investment banking, investment management, and private wealth management services.
Last updated October 17, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
William Blair & Company is a U.S.-based financial services firm headquartered in Chicago, Illinois. Founded in 1935 by William McCormick Blair, it has developed as an independent firm serving companies, institutions, business owners, families, and individual investors. The supplied official materials describe a firm whose services and expertise are intended to meet clients’ evolving needs. Its principal business areas include investment banking, investment management, and private wealth management. The firm also publishes investment research and market perspectives. Its website features research coverage of companies across sectors, including convenience retail and clinical-stage radiopharmaceuticals, as well as investment commentary on consumer packaged goods and other market themes. These materials indicate that research and advice are important parts of its offering, alongside financial transactions and portfolio services. William Blair serves clients in the United States and internationally. Its official website lists community partners in cities across the United States and Europe, reflecting an international presence as well as local community engagement. The firm emphasizes client focus, integrity, excellence, inclusivity, and collaboration in its stated values. It remains active and privately held; the supplied evidence does not identify a parent company or provide detailed ownership information.
History
William Blair & Company was founded in Chicago in 1935 by William McCormick Blair. It grew into an independent financial services firm, maintaining a focus on serving clients as their needs changed. Its official description connects the firm’s continuing work to its founder’s vision and values, although the supplied evidence does not provide a detailed chronology of its early operations or subsequent structural changes. The firm’s activities encompass investment banking, investment management, and private wealth management. Its research work is visible in company coverage and in market commentary published on its website. Examples in the supplied homepage evidence include initiation of research coverage for a U.S. convenience store operator and a clinical-stage radiopharmaceuticals company, alongside investment commentary about consumer packaged goods stocks. These examples illustrate the range of sectors addressed by its research, rather than an exhaustive list of coverage areas. William Blair’s official materials also describe a values-led culture emphasizing client focus, integrity, excellence, inclusivity, and collaboration. Its community-partner program lists organizations in U.S. cities and European locations, showing that its community engagement extends across markets where the firm operates. The firm remains active. The evidence supplied here does not establish a parent company, detailed ownership arrangements, or a complete record of leadership and corporate milestones.
- 1935
William Blair & Company founded
William Nay added as managing director
Products and positioning
An independent financial services firm emphasizing client service, research, investment expertise, and long-term relationships.
Investment banking
Financial services for corporate and institutional clients.
Investment management
Investment and portfolio management services.
Private wealth management
Wealth and portfolio services for individuals and business owners.
Research and market insights
Company research coverage and investment commentary.
Recent events
Copperleaf prices and upsizes its initial public offering[5]
Reported:
Copperleaf announced the pricing of its initial public offering at $15.00 per share for total gross proceeds of $140.1 million; the offering was upsized from an initial $125 million due to excess demand.
Neuronetics prices $75 million public stock offering[6]
Neuronetics announced that it priced an underwritten public offering of 4,840,000 common shares at $15.50 per share. Gross proceeds are expected to be approximately $75 million before offering expenses; closing was expected on or about February 2, subject to customary conditions.
Sources6 sources
- 1William Blair | Homepagewilliamblair.com
- 2Our Mission, Vision, and Values | William Blairwilliamblair.com
- 3Global Community Partners | William Blairwilliamblair.com
- 4Who We Are | William Blairwilliamblair.com
- 5Copperleaf为首次公开募股定价并扩大规模finanznachrichten.de
- 6Neuronetics 为 7,500 万美元公开发行股票定价itbusinessnet.com
Cite this profile: Cite the canonical profile. /brand-wiki/william-blair-and-company · Editorial policy · How profiles are compiled