Technical paper

Operational VAR: a closed-form approximation

Klaus Böcker and Claudia Klüppelberg investigate a simple loss distribution model for operational risk. They show that, when loss data is heavy-tailed (which in practice it is), a simple closed-form approximation for operational VAR can be obtained. They…

A matter of principal

Developing term structure models can be tricky, as unknown factors and non-observable variables can affect futures prices. But principal components analysis is useful in tackling these problems. Here, Delphine Lautier uses PCA to pin down price movements…

Time for multi-period capital models

Several financial institutions use single-period models to determine their credit portfolio loss distribution, calculate their loss volatility and assign economic capital. Here, Kevin Thompson, Alistair McLeod, Panayiotis Teklos and Shobhit Gupta…

Trading down the slopes

The credit derivatives market is growing at an impressive rate, with the credit default swap (CDS) being the most popular instrument. This article is relevant for the trading of CDSs and bond portfolios. Mascia Bedendo, Lara Cathcart, Lina El-Jahel and…

Unbiased risk-neutral loss distributions

Luigi Vacca introduces entropy maximisation (ME) to derive portfolio loss probabilities that are consistent with standard tranche prices on a credit default swap index. Tranche prices that are calculated using ME are free of arbitrage. A numerical…

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