In mid-September 2008, following the bankruptcy of Lehman Brothers, international interbank markets froze and interbank lending beyond very short maturities virtually evaporated. Despite massive central bank support operations and purchases of key assets, many financial markets remained impaired...

This paper explores the implications of systemic risk in Credit Structured Finance (CSF). Risk measurement issues loomed large during the 2007-08 financial crisis, as the massive, unprecedented number of downgrades of AAA senior bond tranches inflicted severe losses on banks, calling into...

This paper explores the implications of systemic risk in Credit Structured Finance (CSF). Risk measurement issues loomed large during the 2007-08 financial crisis, as the massive, unprecedented number of downgrades of AAA senior bond tranches inflicted severe losses on banks, calling into...

We propose a framework for stress testing the resilience of a financial network to external shocks affecting balance sheets. Whereas previous studies of contagion effects in financial networks have relied on large scale simulations, our approach uses a simple analytical criterion for resilience...

Many studies have questioned the reliability of banks' calculations of risk-weighted assets (RWA) for prudential purposes. The significant divergences found at international level are taken as indicating excessive subjectivity in the current rules governing banks' risk measurement and capital...

Since 1996 the Basel risk-weighting regime has been based on the distinction between the trading and the banking book. For a long time credit items have been weighted less strictly if held in the trading book, on the assumption that they are easy to hedge or sell. The Great Financial Crisis made...

Choosing a proper external risk measure is of great regulatory importance, as exemplified in the Basel II and Basel III Accord which use Value-at-Risk (VaR) with scenario analysis as the risk measures for setting capital requirements. We argue a good external risk measure should be robust with...

This paper empirically investigates the impact of internal ratings-based (IRB) approach on the risk weight under Basel II. Assuming increasing cost of raising new capital when the requirement constraint is violated, this paper estimates the difference of unknown risk weight parameters between...

Web-based financial intermediation on a peer-to-peer (P2P) basis will eventually prevail as an economically superior form of organisation compared to the traditional banking business model. P2P lending is the most popular type of crowdfunding, whereby an internet platform collects small amounts...