Efficiency of central clearing under liquidity stress

Marco Bardoscia (), Fabio Caccioli () and Haotian Gao ()
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Marco Bardoscia: Bank of England, Postal: Bank of England, Threadneedle Street, London, EC2R 8AH
Fabio Caccioli: University College London, Systemic Risk Centre, London Mathematical Laboratory
Haotian Gao: University College London

No 1002, Bank of England working papers from Bank of England

Abstract: We explore the impact of central clearing on the demand for collateral arising from variation margin calls in the derivatives market. We find that the aggregate demand for collateral is not necessarily minimal when all contracts are centrally cleared. Hence, at least in this respect, increasing the scope of central clearing is not always beneficial. Previous work finds instead that the demand for collateral is minimal when all contracts are centrally cleared, but rely on the crucial assumption that all institutions have centrally cleared and bilateral contracts with exactly the same underlying counterparties. In this special case we prove a stronger result: that the aggregate demand for collateral is (weakly) decreasing with the fraction of centrally cleared notional. We also prove that, in this case, the aggregate demand for collateral starts decreasing only when the fraction of centrally cleared notional is larger than a critical value, suggesting that the benefits of central clearing kick-in only when a sufficiently large portion of the market has moved to central clearing.

Keywords: Financial network; systemic risk; derivatives; central counterparties; contagion (search for similar items in EconPapers)
JEL-codes: G20 G28 (search for similar items in EconPapers)
Pages: 70 pages
Date: 2022-11-11
New Economics Papers: this item is included in nep-mon
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Persistent link: https://EconPapers.repec.org/RePEc:boe:boeewp:1002

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