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Identifying contagion in a banking network

Author

Listed:
  • Morrison, Alan

    () (Said Business School, Oxford University)

  • Vasios, Michalis

    () (Bank of England)

  • Wilson, Mungo

    () (Said Business School, Oxford University)

  • Zikes, Filip

    () (Federal Reserve Board)

Abstract

This paper studies the impact of trading profits and losses on bank counterparty borrowing costs using data from a derivatives trade depositary. We use the network of credit default swap (CDS) transactions between banks to identify bank CDS returns attributable to counterparty losses. Any bank’s exposure to corporate default increases whenever counterparties from whom it has purchased default protection themselves experience losses. In line with this statement, we document an increase in the own CDS spread of such a bank. We find no such effect from losses of non-counterparties, nor from counterparties who have bought protection from, rather than sold protection to, the bank. We also find that the effect on bank CDS returns through this counterparty loss channel is large relative to the direct effect on a bank’s CDS returns from its own trading losses.

Suggested Citation

  • Morrison, Alan & Vasios, Michalis & Wilson, Mungo & Zikes, Filip, 2017. "Identifying contagion in a banking network," Bank of England working papers 642, Bank of England.
  • Handle: RePEc:boe:boeewp:0642
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    References listed on IDEAS

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    More about this item

    Keywords

    Contagion; counterparty risk; credit default swaps; networks;

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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