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Firm capital dynamics in centrally cleared markets

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  • Agostino Capponi
  • W. Allen Cheng
  • Sriram Rajan

Abstract

We develop a tractable continuous time model of multifirm capital dynamics in a centrally cleared market. Our framework jointly models the strategic interactions between business operations of firms and their trading activities. We show that the endogenous allocation of firm capital between trading and operations can be recovered as the unique fixed point of a system of quadratic equations. Our model predicts that (a) there exists a convex relationship between equilibrium margins and firm capital in the cross‐section, (b) market collateral demand is positively correlated with size concentration, and (c) size concentration is expected to increase over time. Using proprietary data on bilateral credit default swap exposures, we provide evidence that the convexity prediction is both economically and statistically significant and validate our model assumption that firms hedge excess risks.

Suggested Citation

  • Agostino Capponi & W. Allen Cheng & Sriram Rajan, 2020. "Firm capital dynamics in centrally cleared markets," Mathematical Finance, Wiley Blackwell, vol. 30(2), pages 664-701, April.
    • Handle: RePEc:bla:mathfi:v:30:y:2020:i:2:p:664-701
    DOI: 10.1111/mafi.12236
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