Dimensional Fund Advisors is a global investment management firm headquartered in Austin, Texas, founded in 1981 by David Booth, Rex Sinquefield, and Larry Klotz. The firm translates academic financial research into practical investment strategies, offering mutual funds, ETFs, and separately managed accounts globally. Dimensional manages approximately $1 trillion in assets. Relevant to the HR/benefits marketplace, Dimensional funds are available as investment options within employer-sponsored retirement plans, variable annuities, 529 college savings plans, and HSAs, including a Target Date Retirement Income Fund series designed as a QDIA for 401(k) plan sponsors.