"If assets are priced rationally, variables that are related to average returns, such as size and book-to-market equity, must proxy for sensitivity to common (shared and thus undiversifiable) risk factors in returns. The time-series regressions give direct evidence on this issue. In particular, the slopes and R2 values show whether mimicking portfolios for risk factors related to size and [book-to-market] capture shared variation in stock and bond returns not explained by other factors."
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Nobel laureates from the United StatesUniversity of Chicago alumniEconomists from the United StatesNobel laureates in EconomicsPeople from Boston
Original Language: English
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https://en.wikiquote.org/wiki/Eugene_Fama
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Eugene Fama
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