History
Innovations in financial markets research over the last fifty years are the keystone of a belief system that guides Dimensional's approach to investing. Today, the investment industry takes for granted the calculation of rates of return and the availability of comparative universes for professionally managed funds. But before the mid 1960s, there was neither a generally accepted way to calculate a total return nor a way to compare the returns of different funds. This all changed with the advent of computers and the collection of data for mutual funds as well as for individual stocks and bonds.
Rigorous testing by financial economists of that seminal era led to the development of asset pricing models to evaluate the risk/return characteristics of securities and portfolios, and also led to a theory of market efficiency that suggested excess returns were only achievable by taking on above-market risk. Studies documenting the failure of active managers to outperform market indexes gave rise in the early 1970s to passively managed index funds that relied on capital markets as the source of investment returns.
Further research and data compilation over several decades led to the identification of the multiple equity asset classes and risk dimensions that form the basis of Dimensional's strategies.
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1950 Conventional Wisdom circa 1950 "Once you attain competency, diversification is undesirable. One or two, or at most three or four, securities should be bought. Competent investors will never be satisfied beating the averages by a few small percentage points." Gerald M. Loeb Analyze securities one by one. Focus on picking winners. Concentrate holdings to maximize returns. Broad diversification is considered undesirable. 1958 The Role of Stocks James Tobin Separation Theorem: Shifts focus from security selection to portfolio structure. "Liquidity Preference as Behavior Toward Risk," Review of Economic Studies, |
1950 |
1952 Diversification and Portfolio Risk Harry Markowitz Diversification reduces risk. Assets evaluated not by individual characteristics but by their effect on a portfolio. An optimal portfolio can be constructed to maximize return for a given standard deviation. |
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1961 Investments and Capital Structure Merton Miller and Franco Modigliani Theorem relating corporate finance to returns. A firm's value is unrelated to its dividend policy. Dividend policy is an unreliable guide for stock selection. 1965 Behavior of Securities Prices Paul Samuelson, MIT Market prices are the best estimates of value. Price changes follow random patterns. Future share prices are unpredictable. "Proof that Properly Anticipated Prices Fluctuate Randomly," 1968 First Major Study of Manager Performance Michael Jensen, 1965; First studies of mutual funds (Jensen) and of institutional plans (A.G. Becker Corp.) indicate active managers underperform indexes. Becker Corp. gives rise to consulting industry with creation of "Green Book" performance tables comparing results to benchmarks. |
1960 |
1964 Single-Factor Asset Pricing Risk/Return Model William Sharpe Capital Asset Pricing Model: Theoretical model defines risk as volatility relative to market. A stock's cost of capital (the investor's expected return) is proportional to the stock's risk relative to the entire stock universe. Theoretical model for evaluating the risk and expected return of securities and portfolios. 1966 Efficient Markets Hypothesis Eugene F. Fama, Extensive research on stock price patterns. Develops Efficient Markets Hypothesis, which asserts that prices reflect values and information accurately and quickly. It is difficult if not impossible to capture returns in excess of market returns without taking greater than market levels of risk. Investors cannot identify superior stocks using fundamental information or price patterns. |
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1971 The Birth of Index Funds John McQuown, Banks develop the first passive S&P 500 Index funds. Years later, Sinquefield co-chairs Dimensional, and McQuown sits on its Board. 1975 A Major Plan First Commits to Indexing New York Telephone Company invests $40 million in an S&P 500 Index fund. The first major plan to index. Helps launch the era of indexed investing. "Fund spokesmen are quick to point out you can't buy the market averages. It's time the public could." Burton G. Malkiel, |
1970 |
1972 Options Pricing Model Fischer Black, The development of the Options Pricing Model allows new ways to segment, quantify, and manage risk. The model spurs the development of a market for alternative investments. 1977 Database of Securities Prices since 1926 Roger Ibbotson and Rex Sinquefield, An extensive returns database for multiple asset classes is first developed and will become one of the most widely used investment databases. The first extensive, empirical basis for making asset allocation decisions changes the way investors build portfolios. |
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1981 The Size Effect Rolf Banz, Analyzed NYSE stocks, 1926-1975. Finds that, in the long term, small companies have higher expected returns than large companies and behave differently. Dimensional Fund Advisors is founded in 1981 and launches the first passive small cap strategy (the US Micro Cap Portfolio). 1986 International Size Effect Dimensional Fund Advisors Dimensional Investing vs. Indexing: With no index, Dimensional creates international small cap strategies modeled after the US research. Dimensional's live returns become the index used in Ibbotson Associates' database. Dimensional investing is based on a rational risk dimension, and does not slavishly follow indexes or investing conventions. |
1980 |
1983 Variable Maturity Strategy Implemented Dimensional Fund Advisors With no prediction of interest rates, Eugene Fama develops a method of shifting maturities that identifies optimal positions on the fixed income yield curve. |
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1990 Nobel Prize Recognizes Modern Finance Economists who shaped the way we invest are recognized, emphasizing the role of science in finance. William Sharpe for the Capital Asset Pricing Model. Harry Markowitz for portfolio theory. Merton Miller for work on the effect of firms' capital structure and dividend policy on their prices. 1999 Tax Management Dimensional tax-managed strategies implemented to maximize after-tax returns by offsetting gains and minimizing dividends. Based on Fama/French research and Dimensional's "portfolio decision system" trading technology. |
1990 |
1992 Multifactor Asset Pricing Model and Value Effect Eugene Fama and Improves on the single-factor asset pricing model (CAPM). Identifies market, size, and "value" factors in returns. Develops the three-factor asset pricing model, an invaluable asset allocation and portfolio analysis tool. Dimensional introduces value strategies based on the research. Lends to similar findings internationally. |
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2004 Applied Core Equity Dimensional portfolio construction methodology weights securities by size and value characteristics instead of market capitalization. Total market strategies launched to provide efficient, diversified risk factor exposure while limiting turnover and transaction costs. Core equity portfolios move beyond traditional, component-based asset allocation via vast diversification and cost-efficient market coverage. |
2000 |