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Mortgage Dollar Roll

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  • Zhaogang Song
  • Haoxiang Zhu

Abstract

Mortgage dollar roll, the most common financing strategy for agency MBS, differs from repo in that the returned collateral can differ from those received. Also, MBS ownership changes hands in the funding period. We show that dollar roll “specialness,” how much implied financing rates fall below MBS repo rates, (1) increases in the value of the cheapest-to-deliver option, (2) decreases in the leverage of primary dealers, (3) decreases in prepayment risk exposure during the financing period, and (4) decreases in MBS returns. The Federal Reserve’s dollar roll sales in quantitative easing operations are associated with lower specialness. Received February 3, 2016; editorial decision July 30, 2018 by Editor Itay Goldstein. Authors have furnished an Internet Appendix, which is available on the Oxford University Press Web site next to the link to the final published paper online.

Suggested Citation

  • Zhaogang Song & Haoxiang Zhu, 2019. "Mortgage Dollar Roll," The Review of Financial Studies, Society for Financial Studies, vol. 32(8), pages 2955-2996.
    • Handle: RePEc:oup:rfinst:v:32:y:2019:i:8:p:2955-2996.
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    File URL: http://hdl.handle.net/10.1093/rfs/hhy117
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    Cited by:

    1. He, Zhiguo & Nagel, Stefan & Song, Zhaogang, 2022. "Treasury inconvenience yields during the COVID-19 crisis," Journal of Financial Economics, Elsevier, vol. 143(1), pages 57-79.
    2. Peter Diep & Andrea L. Eisfeldt & Scott Richardson, 2021. "The Cross Section of MBS Returns," Journal of Finance, American Finance Association, vol. 76(5), pages 2093-2151, October.
    3. Andreas Fuster & David Lucca & James Vickery, 2023. "Mortgage-backed securities," Chapters, in: Refet S. Gürkaynak & Jonathan H. Wright (ed.), Research Handbook of Financial Markets, chapter 15, pages 331-357, Edward Elgar Publishing.
    4. Corradin, Stefano & Maddaloni, Angela, 2020. "The importance of being special: Repo markets during the crisis," Journal of Financial Economics, Elsevier, vol. 137(2), pages 392-429.
    5. Jiakai Chen & Haoyang Liu & Asani Sarkar & Zhaogang Song, 2020. "Dealers and the Dealer of Last Resort: Evidence from the Agency MBS Markets in the COVID-19 Crisis," Staff Reports 933, Federal Reserve Bank of New York.

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