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Portfolio Inefficiency and the Cross-Section of Expected Returns

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NBER1994-04-01 更新2025-01-04 收录
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https://www.nber.org/papers/w4702
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A plot of expected returns versus betas obeys virtually no relation to an inefficient index portfolio's mean-variance location. If the index portfolio is inefficient, then the coefficients and R- squared from an ordinary-least-squares regression of expected returns on betas can equal essentially any

预期收益与贝塔(beta)的散点图,与无效指数投资组合的均值-方差位置几乎不存在关联。若该指数投资组合无效,则通过对预期收益与贝塔进行普通最小二乘(ordinary-least-squares)回归得到的系数与决定系数R²,理论上可取任意值。
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1994-04-01
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