Abstract
We analyze the fluctuation of the loss from default around its large portfolio limit in a class of reduced-form models of correlated firm-by-firm default timing. We prove a weak convergence result for the fluctuation process and use it for developing a conditionally Gaussian approximation to the loss distribution. Numerical results illustrate the accuracy and computational efficiency of the approximation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2322-2362 |
| Number of pages | 41 |
| Journal | Stochastic Processes and their Applications |
| Volume | 124 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2014 |
| Externally published | Yes |
Keywords
- Central limit theorem
- Interacting particle system
- Portfolio credit risk
ASJC Scopus subject areas
- Statistics and Probability
- Modeling and Simulation
- Applied Mathematics
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