Testing the capital asset pricing model efficiently under elliptical symmetry: a semiparametric approach
椭圆对称下资本资产定价模型的有效检验:半参数方法
Abstract We develop new tests of the capital asset pricing model that take account of and are valid under the assumption that the distribution generating returns is elliptically symmetric; this assumption is necessary and sufficient for the validity of the CAPM. Our test is based on semiparametric efficient estimation procedures for a seemingly unrelated regression model where the multivariate error density is elliptically symmetric, but otherwise unrestricted. The…