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Abstract
Although finance practitioners almost universally learn in school that the Sharpe market model, which separates all returns into alpha and beta, is the starting point for a number of key investment insights, they often forget, or disregard, this knowledge once they are on the job. The five most important insights that a practitioner should hold dear, regardless of what the boss says, are 1) the importance of making alpha and beta decisions separately; 2) the zero-sum nature of active management; 3) the different criteria needed to make alpha and beta decisions; 4) the great value of alpha successfully delivered; and 5) the desirability of paying appropriate fees for each return component or, in other words, high fees for alpha, low fees for beta.
TOPICS: Portfolio theory, in markets, exchange-traded funds and applications
- © 2009 Institutional Investor, Inc.
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