About William Blair

William Blair is a global investment banking and asset management firm. We are committed to building enduring relationships with our clients and providing expertise and solutions to meet their evolving needs. An independent and employee-owned firm, William Blair is based in Chicago, with offices in 18 cities across four continents.

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Our Company – At a Glance

  • Founded in 1935 by William McCormick Blair
  • Independent and employee-owned
  • More than 1,350 employees
  • More than $78 billion in client assets (as March 31, 2016)
  • Investment Banking transactions have covered more than 30 countries, 625 companies, and $216 billion in value since January 2012*
  • Research coverage comprises over 630 companies*
  • Market maker for more than 1,700 listed stocks and 500 preferred stocks*
  • No third-party debt on our balance sheet; equity comes from capital investment by our partners
  • Memberships: Financial Industry Regulatory Authority (FINRA)*, Securities Investor Protection Corporation (SIPC)*, National Futures Association (NFA)**
  • View our Global Capabilities Brochure

*William Blair & Company, L.L.C.
**William Blair Investment Management, LLC


Consistency and continuity in leadership is a hallmark of our firm. Since the firm’s founding in 1935, William Blair & Company has had five CEOs or managing partners, three of whom continue to work at the firm.

Community Impact

We are committed to being a long-term partner to the communities where we live and work.


“ When our clients succeed, the firm’s success will follow.” The words of our founder, William McCormick Blair, are as relevant and influential today as they have ever been. As our firm continually grows and evolves to meet the needs of a dynamic global marketplace, we are guided by a steadfast focus on our clients’ objectives.