This presentation discusses the strategy adopted by Dimensional Fund Advisors (DFA) to add value for its investors. It explores the reduction of transaction costs, creating value for clients, and providing discounts on stock purchases. The marketing strategy of DFA is also discussed, along with the findings of Fama-French beta and the difference between Frazzini and Pedersen's betting against beta. The presentation analyzes the market efficiency, the risk avoided by DFA, the method for buying/selling stock, and the effect of certain market conditions on DFA's trading strategy. It also examines the effect on the marketing strategy and whether DFA can keep its competitive advantage. The presentation evaluates DFA's new tax-managed strategies and the success of the product, and concludes with a discussion on whether strategy modification is needed.