Risk magazine - Volume17/No6

Correlated defaults: let’s go back to the data

Estimates of asset value correlation are a key element of Merton-style credit portfolio models. Many practitioners have access to asset value data for a large universe of listed firms, so estimation is within reach. Alan Pitts describes a statistical…

Generalising universal performance measures

Performance and risk measurement are fundamental quantitative activities in finance, andnew ways of measuring them are always of interest. A recently proposed procedure is theuniversal performance measure. Theofanis Darsinos and Stephen Satchell show…

Arbitrage under power

When one knows the correct value of a tradable asset and the asset price diverges from that value, future convergence may present a good trading opportunity. However, the trader still has to decide when and how aggressively to open the position, and when…

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