International Growth Fund

Fund manager head shot

Simon Fennell

Portfolio manager for the International Growth, International Small Cap Growth and International Leaders strategies. Since joining the firm in 2011, Simon previously served as a TMT Research Analyst, also focusing on idea generation and strategy more broadly.  Prior to joining William Blair, Simon was a Managing Director in the Equities division at Goldman Sachs in London and Boston, where he was responsible for institutional, equity research coverage for European and International stocks. Previously, Simon was in the Corporate Finance Group at Lehman Brothers in London and Hong Kong, working in the M&A and Debt Capital Markets Groups.

Education: M.A., University of Edinburgh; M.B.A., Johnson Graduate School of Management, Cornell University.

Tenure with William Blair: Since 2011

Fund manager head shot

Ken McAtamney

Head of the global equity team and a portfolio manager for William Blair’s International Growth, Global Leaders, International Leaders, and Emerging Market Leaders strategies. Ken is also a member of the Investment Management leadership team. He was previously co-director of research and a mid-large-cap industrials and healthcare analyst. Before joining William Blair in 2005, Ken was a vice president at Goldman Sachs and Co., where he was responsible for institutional equity research coverage for both international and U.S. equity. Before that, he was a corporate banking officer with NBD Bank. Ken received a B.A. from Michigan State University, and an M.B.A. from Indiana University.

Education: B.A., Michigan State University; M.B.A. Indiana University.

Tenure with William Blair: Since 2005

Fund manager head shot

Andrew Siepker, CFA

Portfolio manager for the International Growth strategy and a global equity research analyst covering industrial companies. Previously, he was a research analyst conducting non-U.S. consumer research and worked on William Blair’s sell-side as a research associate focused on e-commerce and hardline retailers. Before joining William Blair in 2006, Andy was a financial analyst in a finance training program at First Data Corporation. He is a member of the CFA Institute and the CFA Society Chicago. Andy received a B.S. in Finance, with high distinction, from the University of Nebraska.

Education: B.S., University of Nebraska

Tenure with William Blair: Since 2006