“The empirical successes of [the three-factor model] suggest that it is an equilibrium pricing model, a three-factor version of Merton’s (1973) intertemporal CAPM (ICAPM) or Ross’s (1976) arbitrage pricing theory (APT). In this view, SMB and HML mimic combinations of two underlying risk factors or state variables of special hedging concern to investors.”

Source: Common risk factors in the returns on stocks and bonds, 1993, p. 57

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Eugene Fama6

American economist and Nobel laureate in Economics 1939

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