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Are All Ratings Created Equal? The Impact of Issuer Size on the Pricing of Mortgage-backed Securities

Author

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  • Jie (Jack) He
  • Jun 'QJ' Qian
  • Philip E. Strahan

Abstract

We examine whether rating agencies (Moody's, S&P, and Fitch) reward large issuers of mortgage-backed securities, who bring substantial business, by granting them unduly favorable ratings. The initial yield on both AAA-rated and non-AAA rated tranches sold by large issuers is higher than that on similar tranches sold by small issuers during the market boom years of 2004-2006. Moreover, the prices of MBS sold by large issuers drop more than those sold by small issuers, and the differences are concentrated among tranches issued during 2004-2006. We conclude that large issuers receive more favorable ratings and that the market prices the risk of inflated ratings, especially during booming periods.

Suggested Citation

  • Jie (Jack) He & Jun 'QJ' Qian & Philip E. Strahan, 2011. "Are All Ratings Created Equal? The Impact of Issuer Size on the Pricing of Mortgage-backed Securities," NBER Working Papers 17238, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:17238
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    References listed on IDEAS

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    1. Acharya, Viral V. & Schnabl, Philipp & Suarez, Gustavo, 2013. "Securitization without risk transfer," Journal of Financial Economics, Elsevier, vol. 107(3), pages 515-536.
    2. Ashcraft, A. & Goldsmith-Pinkham, P. & Vickery, J., 2010. "MBS Ratings and the Mortgage Credit Boom," Other publications TiSEM aea4b6fb-eb57-49d4-a347-f, Tilburg University, School of Economics and Management.
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    Cited by:

    1. Theurl, Theresia & Schaetzle, Dominik, 2011. "Ratingagenturen in der Kritik: Eine Analyse der Reformforderungen und -vorschläge," Arbeitspapiere 116, University of Münster, Institute for Cooperatives.

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    More about this item

    JEL classification:

    • G01 - Financial Economics - - General - - - Financial Crises
    • G2 - Financial Economics - - Financial Institutions and Services

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