This paper demonstrates that aggregate losses are necessarily low as long as we remain under the standard assumptions of LDA models. Moreover empirical findings show that the correlation between two aggregate losses is typically below 5%, which opens a wide scope for large diversification...

[fre] Cet article examine les différentes règles proposées pour fixer les taux de conversion au 1er janvier 1999. Ces règles ne sont pas toutes équivalentes au regard de l'influence qu'elles peuvent avoir sur les marchés financiers. Idéalement, une règle de conversion doit être telle...

Most models of the term structure show a factor structure, where interest rates depend linearly on some factors. We derive in a Heath, Jarrow and Morton [1992] type framework what the main consequences of this assumption are, especially when volatilities are stochastic. We show that such a...

We consider a two-country economy under the nonarbitrage assumption and where volatilities are stochastic. Assuming the existence of state variables, we show that, under some mild volatility assumptions, the model is actually fully specified. In particular, both term structure dynamics and the...

Fund selection is an important issue for investors. This topic has spawned abundant academic literature. Nonetheless, most of the time, these works concern only active management, whereas many investors, such as institutional investors, prefer to invest in index funds. The tools developed in the...

Portfolio construction and risk budgeting are the focus of many studies by academics and practitioners. In particular, diversification has spawn much interest and has been defined very differently. In this paper, we analyze a method to achieve portfolio diversification based on the decomposition...

Risk parity is an allocation method used to build diversified portfolios that does not rely on any assumptions of expected returns, thus placing risk management at the heart of the strategy. This explains why risk parity became a popular investment model after the global financial crisis in...