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Mortgage hedging in fixed income markets

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  • Malkhozov, Aytek
  • Mueller, Philippe
  • Vedolin, Andrea
  • Venter, Gyuri

Abstract

We study the feedback from hedging mortgage portfolios on the level and volatility of interest rates. We incorporate the supply shocks resulting from hedging into an otherwise standard dynamic term structure model, and derive two sets of predictions which are strongly supported by the data: First, the duration of mortgage-backed securities (MBS) positively predicts excess bond returns, especially for longer maturities. Second, MBS convexity increases yield and swaption implied volatilities, and this effect has a hump-shaped term structure. Empirically, neither duration, nor convexity are spanned by yield factors. A calibrated version of our model replicates salient features of first and second moments of bond yields.

Suggested Citation

  • Malkhozov, Aytek & Mueller, Philippe & Vedolin, Andrea & Venter, Gyuri, 2013. "Mortgage hedging in fixed income markets," LSE Research Online Documents on Economics 119032, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:119032
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    More about this item

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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