WHAT IS THIS? A central counterparty (CCP) manages default risk by collecting initial and variation margin from both parties to a trade. Spill-over losses are absorbed via a default fund to which all members contribute – introducing a degree of mutualised risk – and by the CCP’s own capital. The concept is an old one that was extended to over-the-counter derivatives in the aftermath of the financial crisis.
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This paper is meant to serve as a comparison of the approaches and margin models employed by CCPs.
This paper discusses the different approaches to incorporating market liquidity risk within a CCP’s default waterfall and the challenges that these approaches pose.
This paper presents a new approach to parameter selection based on the statistical properties of the worst loss over a margin period of risk estimated by the margin model under scrutiny.
This paper proposes a performance test based on empirical similarity that would account for margin shortfall, procyclicality and efficiency in a single score.
In this paper, the authors address one aspect of CCP risk management: initial margining practices. The paper provides a historical review of margining at selected CCPs as well as an overview of their current margin policies.
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