Spanning tests in return and stochastic discount factor mean-variance frontiers: A unifying approach

Francisco Peñaranda and Enrique Sentana

Economics Working Papers from Department of Economics and Business, Universitat Pompeu Fabra

Abstract: We propose new spanning tests that assess if the initial and additional assets share the economically meaningful cost and mean representing portfolios. We prove their asymptotic equivalence to existing tests under local alternatives. We also show that unlike two-step or iterated procedures, single-step methods such as continuously updated GMM yield numerically identical overidentifyng restrictions tests, so there is arguably a single spanning test. To prove these results, we extend optimal GMM inference to deal with singularities in the long run second moment matrix of the influence functions. Finally, we test for spanning using size and book-to-market sorted US stock portfolios.

Keywords: Asset Pricing; Continuously Updated GMM; Generalised Empirical Likelihood; Generalised Inverse; Representing Portfolios; Singular Covariance Matrix (search for similar items in EconPapers)
JEL-codes: C12 C13 G11 G12 (search for similar items in EconPapers)
Date: 2008-06, Revised 2010-09
New Economics Papers: this item is included in nep-ecm
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Citations: View citations in EconPapers (13)

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Related works:
Journal Article: Spanning tests in return and stochastic discount factor mean–variance frontiers: A unifying approach (2012)
Working Paper: Spanning Tests in Return and Stochastic Discount Factor Mean-Variance Frontiers: A Unifying Approach (2004)
Working Paper: Spanning Tests in Return and Stochastic Discount Factor Mean Variance Frontiers: A Unifying Approach (2004)
Working Paper: Spanning Tests in Return and Stochastic Discount Factor Mean-Variance Frontiers: A Unifying Approach (2004)
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Persistent link: https://EconPapers.repec.org/RePEc:upf:upfgen:1101

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