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The dynamics of rating based credit benchmark curves

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  • Heidorn, Thomas
  • Schlamann, Sara

Abstract

The paper models and analyses the dynamics of credit spread curves based on ratings over the period from 2004 to 2021. Using more than 1.5 million data points of individual bonds, instead of using index data, monthly asset swap spread (ASW) curves are constructed for all rating levels. The paper focuses on the EUR credit market which has grown significantly in recent years. Also, the data is more contemporary compared to the literature. For a period of almost 20 years EUR corporate bonds (investment grade and high yield) are discussed. We find that investment grade ASW curves are typically upward sloping, however during time of crisis they turn hump shaped or inverse. Non-investment grade curves tend to be inverse. While most rating classes show substantial rating changes during crises, very low rated bonds seem to depend mainly on idiosyncratic risk. We find that the bond purchase programs by central banks considerably lowered credit spreads. Also, the credit spread for lower ratings are typically higher for the whole curve compared to a better rating. By comparing ratingbased credit spread curves with individual curves we find that they are suitable as a benchmark.

Suggested Citation

  • Heidorn, Thomas & Schlamann, Sara, 2022. "The dynamics of rating based credit benchmark curves," Frankfurt School - Working Paper Series 231, Frankfurt School of Finance and Management.
    • Handle: RePEc:zbw:fsfmwp:231
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    References listed on IDEAS

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    More about this item

    Keywords

    Credit Spread Curves; Benchmark Curves; Asset Swap Spread; Credit Rating and Credit Spread; Credit Spread Development; Rating Benchmark Curves; Credit Spread;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G24 - Financial Economics - - Financial Institutions and Services - - - Investment Banking; Venture Capital; Brokerage
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth

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