John Keller

John R. Keller, CFA, is a Portfolio Manager at Stephens Investment Management Group LLC, based in Houston, TX. He leads portfolio management and research, with a particular focus on the industrials sector within small- and mid-cap growth equities, and is integral to the firm’s team-based investment approach. Keller is responsible for managing several strategies and mutual funds, including the American Beacon Stephens Small Cap Growth and Mid-Cap Growth Funds, employing fundamental and quantitative methods to uncover growth opportunities in transformative companies.

Keller joined Stephens Investment Management Group in 2013, initially as a Senior Equity Analyst and later advancing to Portfolio Manager. Before that, he covered the Oilfield Services sector as a Senior Research Analyst at Stephens Inc., and as an Associate at Johnson Rice & Company, developing subject matter expertise in energy services and related industrial verticals. His research experience encompasses deep industry due diligence, financial modeling, and direct engagement with corporate management teams.

He holds an MBA from Tulane University’s A.B. Freeman School of Business and a Bachelor’s degree in Business Administration from the University of Puget Sound. Keller is a CFA charterholder and is licensed in Series 7, 63, 66, 86, and 87. His recognized expertise in industrials and oilfield services has contributed to the firm's strong record in small- and mid-cap growth equity strategies.