Head Office: Chicago, Illinois      
Total Assets Under Management: US$49 billion
Portfolio Managers: 39
Geographic Mandate: U.S. Small Cap

Investment Philosophy and Approach:

William Blair & Company invests primarily in stocks of small-cap U.S. growth companies that exhibit superior financial characteristics and outstanding long-term earnings growth prospects. Its investment process employs thorough, bottom-up, fundamental research on individual companies, often including discussions with management, suppliers and/or customers.