Fat tails

Capturing fat tails

Financial institutions are more aware of the risks posed by high-impact events since the crisis, but the question is how to encapsulate these in models. Zari Rachev, Boryana Racheva-Iotova and Stoyan Stoyanov discuss three approaches for capturing fat…

Putting the smile back on the face of derivatives

Cross-asset quadratic Gaussian models have been limited in the scale of their implementation by the difficulty in ensuring the correct drift conditions to omit arbitrage. Here, Paul McCloud shows how to exploit the symmetries of the functional form to…

Rethinking (operational) risk management

For operational risk managers to really make a difference to their firms' fortunes, they must be willing to get their hands dirty and face facts, no matter how scary the facts may be, says Sergio Scandizzo, in the second of a two-part series

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