William Lyons, president for 10 years and chief executive officer of six and a half years at American Century Investments, is retiring. Jonathan Thomas, executive vice president and chief financial officer, will assume Lyons’ duties March 1.

Lyons, 51, is nearly a 20-year veteran at American Century. “Over the past decade, Bill has been a wonderful leader of American Century, guiding our successful strategic effort to diversify the company’s asset management capabilities to encompass the entire investment spectrum while spearheading our drive to expand the channels of distribution,” said James Stowers III, chairman of American Century.

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