Magdalia Armstrong promotes Dimensional's investment philosophy and strategies to investment consultants in the western US. She is responsible for relationship management and serves as a key contact for consultant requests and new business opportunities. In addition, Magdalia provides oversight for many of the team's internal projects. Prior to joining Dimensional in 2006, Magdalia spent four years at investment consulting firm Wurts & Associates, working with foundation, endowment, and defined benefit clients. Before that, she was in the analytics group at Wilshire Associates.

Magdalia holds a BS in mathematics from the University of California, Riverside, and an MS in financial mathematics from the University of Chicago. She is a CFA Charterholder and is a member of the CFA Society of Los Angeles.