Todd McClone, CFA, partner, is a portfolio manager for William Blair’s emerging markets strategies. Before joining the firm in 2000, he was a senior research analyst specializing in international equity for Strong Capital Management. Previously, he was a corporate finance research analyst with Piper Jaffray, where he worked with the corporate banking financials team on a variety of transactions, including initial public offerings, mergers and acquisitions, and subordinated debt offerings. He also issued fairness opinions and conducted private company valuations. Todd received a B.B.A. and B.A. from the University of Wisconsin–Madison.

Casey Preyss, CFA, partner, is a portfolio manager for William Blair’s Emerging Markets Growth, Emerging Markets Small Cap Growth, China A-Shares Growth, China Growth, and Emerging Markets ex China Growth strategies. Since joining William Blair in 2000, he has been a research analyst covering industrials, IT, and resources stocks. Before taking on fundamental research responsibilities for William Blair’s global equity team, Casey was a quantitative analyst. Before joining the firm, he was an international equity research sales associate with Thomas White International. He received a B.S.B.A. from The Ohio State University and an M.B.A. from the University of Chicago’s Booth School of Business.

Vivian Lin Thurston, CFA, partner, is a portfolio manager for William Blair’s Emerging Markets Growth, China A-Shares Growth, China Growth, and Emerging Markets ex China Growth strategies. Previously, she was a global equity research analyst covering the China A-shares market and large-cap consumer companies. Before joining William Blair, Vivian was vice president and consumer sector head at Calamos Investments. Before that, she was an executive director and senior investment analyst at UBS Global Asset Management/Brinson Partners, where she was responsible for stock selection and research for consumer sectors in the United States and emerging markets. Vivian also held roles at Mesirow Financial, China Agribusiness Development Trust and Investment Corporation, and Vanke. She is a member of the CFA Institute and the CFA Society Chicago. She is also the founder and chairman of the board of the Chinese Finance Association of America, a 501(c) nonprofit organization. Vivian received a LL.B. in sociology from Peking University and an M.A. in sociology and M.S. in finance from the University of Illinois Urbana-Champaign.