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William Blair

Investor type Investment Bank
Founders James Vaughan


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This summary is composed by our algorithm based on the analysis of the deals. If you think that some of this information is not accurate, please let us know about it and provide any supporting evidences if possible. Such cases will be analyzed by our ML-algorithm and implemented in our database, which will improve this summary.
Total investments 24
Average round size
The average size of a deal this fund participated in
Portfolio companies 20
Rounds per year 0.28
Lead investments 6
Follow on index
How often the fund supports its portfolio startups at next rounds
Exits 10
Key employees 1

Areas of investment

  • Health Care
  • Biotechnology
  • Information Technology
  • Software
  • Manufacturing

William Blair is the famous Corporate Investor, which was founded in 1935. The company was established in North America in United States. The main office of represented Corporate Investor is situated in the Chicago.

The current fund was established by James Vaughan.

The fund has specific favorite in a number of founders of portfolio startups. For fund there is a match between the country of its foundation and the country of its the most frequent investments - United States. Among the most popular portfolio startups of the fund, we may highlight Inhibitex, Athersys, Xan3D Technologies. We can highlight the next thriving fund investment areas, such as Information Services, Biotechnology. Moreover, a startup needs to be at the age of 6-10 years to get the investment from the fund.

The typical case for the fund is to invest in rounds with 3-4 participants. Despite the William Blair, startups are often financed by MPM Capital, Forward Ventures, Enterprise Partners. The meaningful sponsors for the fund in investment in the same round are Enterprise Partners, Reicon Capital, Optical Partners. In the next rounds fund is usually obtained by Forward Ventures, Enterprise Partners, BB Biotech Ventures.

The high activity for fund was in 2000. The real fund results show that this Corporate Investor is 15 percentage points more often commits exit comparing to other companies. Opposing the other organizations, this William Blair works on 19 percentage points more the average amount of lead investments. The common things for fund are deals in the range of 10 - 50 millions dollars. The higher amount of exits for fund were in 2005. The average startup value when the investment from William Blair is 50-100 millions dollars. The fund is constantly included in less than 2 deals per year.

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Related Funds

Funds investing in previous rounds
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Typical Co-investors
William Blair is more likely to invest in rounds together with the following funds:
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Funds investing in following rounds
These funds have a tendency to invest in the following rounds after William Blair:
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Gestion AD -
Kohlberg Kravis Roberts Japan Chiyoda, Japan
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Viroad Biotechnology China, Hebei, Shijiazhuang

Notable deals

CompanyIndustryRound SizeDateInvestorsLocation

Halo Investing

Financial Services
$100M12 Oct 2021 Chicago, Illinois, United States


Health Care
$9M23 Mar 2012 Cleveland, Ohio, United States


Health Care
$13M28 Jan 2011 Cleveland, Ohio, United States


Local Business
Search Engine
$4M19 Jan 2010 Little Rock, Arkansas, United States


Health Care
$30M26 Sep 2005 San Diego, California, United States


Commercial Real Estate
Innovation Management
Real Estate
$14M21 May 2004 Washington, United States

Xan3D Technologies

3D Technology
Information Technology
$15M20 May 2004 New Hampshire, United States


Health Care
Medical Device
$9M13 May 2004 San Diego, California, United States


Health Care
$30M15 Jan 2004 San Diego, California, United States


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