Charles Tan is a senior vice president and co-chief investment officer — Global Fixed Income for American Century Investments®. As co-CIO of Global Fixed Income, Mr. Tan oversees portfolio management and research for the firm’s fixed income strategies, managed in offices in Santa Clara, Calif., New York City, and London, England. Mr. Tan co-chairs the firm's Global Macro Strategy team, which sets the investment strategy for the Global Fixed Income group, and the Risk Management team, which oversees and manages risk for all strategies managed by the Global Fixed Income group. Mr. Tan joined the firm in 2018 from Aberdeen Standard Investments (previously Aberdeen Asset Management), where he held a series of leadership roles, including head of North American fixed income. Before that, he was vice president and senior high yield analyst at Moody's Investors Service. Previously, he was a credit officer with First Commercial Bank of Philadelphia (HSBC Bank). He has worked in the investment industry since 1994. Mr. Tan earned a bachelor's degree in economics from the University of International Business & Economics in Beijing and an MSBA from Bucknell University.

Mr. Ren, Vice President, Senior Portfolio Manager and Head of Systematic Credit has served on teams managing fixed income investments since joining the advisor in 2023. Prior to joining American Century, Mr. Ren was a Senior Vice President, Systematic Credit Team Lead and Portfolio Manager at AllianceBernstein. He has a bachelor’s degree in finance from University of International Business and Economics, Beijing and a Masters in Financial Engineering from City University of New York, Baruch College. He is a CFA charterholder.