In this article, we formulate a time-scale decomposition of an international version of the CAPM that accounts for both market and exchange-rate risk. In addition, we derive an analytical formula for time-scale value at risk and marginal value at risk (VaR) of a portfolio. We apply our...

This paper focuses on return spillovers in stock markets at different time scales using wavelet analysis. We look at eight stock indices that comprise the G7 countries, emerging Asia, Western Europe, Eastern Europe and the Middle East, the emerging Far East, Latin America, North America, and the...

This paper analyzes the effect of recent political conflicts in the Middle East on stock markets worldwide. In particular, it studies how political instabilityâmainly due to the war in Iraqâhas affected the long-term volatility of stock markets, using two approaches, Inclan and Tiao's (1994)...

A random-effect model is devised with individual- and time-specific components for uncensored data, based on a specification for censored data developed by Anderson (1985) and extended by Kim and Maddala (1992). In addition, specification tests are devised that allow one to choose between the...

Based on weekly data of the Dow Jones Country Titans, the CBT-municipal bond, spot and futures prices of commodities for the period 1992-2005, we analyze the implications for portfolio management of accounting for conditional heteroskedasticity and structural breaks in long-term volatility. In...

This study presents a model to select the optimal hedge ratios of a portfolio composed of an arbitrary number of commodities. In particular, returns dependency and heterogeneous investment horizons are accounted for by copulas and wavelets, respectively. A portfolio of London Metal Exchange...

This paper analyzes the profitability of Chile's retirement multifund system—funds A, B, C, D, and E—since its launch in 2002. The analysis shows that the rates of return on the funds are highly correlated across pension fund administrators (PFAs) and that risk-adjusted returns on these...

Extreme value theory (EVT) focuses on modeling the tail behavior of a loss distribution using only extreme values rather than the whole data set. For a sample of 10 countries with dirty/free float regimes, we investigate whether paired currencies exhibit a pattern of asymptotic dependence. That...