In this study, we apply a rolling window approach to wavelet-filtered (denoised) S&P500 returns (2000–2020) to obtain time varying Hurst exponents. We analyse the dynamics of the Hurst exponents by applying statistical tests (e.g., for stationarity, Gaussianity and self-similarity), a...

A new test for financial market contagion based on increases in extremal dependence (co-kurtosis and co-volatility) is developed to identify the propagation mechanism of shocks across international financial markets. This new approach is applied to test for contagion in equity markets and...

We study the influence of the exchange rate on the speed of economic recovery in a sample of 67 developed and developing economies over the years 1989-2019. First, using a cross-sectional sample of 341 economic recoveries, we study the effect of nominal depreciation and real undervaluation on...

Today we live in a post-truth and highly digitalized era characterized by a flow of (mis-) information around the world. Identifying the impact of this information on stock markets and forecasting stock returns and volatilities has become a much more difficult task, perhaps almost impossible....

This paper offers empirical evidence that a country's choice of exchange rate regime can have a significant impact on its medium-term rate of productivity growth. Moreover, the impact depends critically on the country's level of financial development, its degree of market regulation, and its...

We develop a finite-sample procedure to test for mean-variance efficiency and spanning without imposing any parametric assumptions on the distribution of model disturbances. In so doing, we provide an exact distribution-free method to test uniform linear restrictions in multivariate linear...

We study the problem of detecting structural instability of factor strength in asset pricing models for financial returns. We allow for strong and weaker factors, in which the sum of squared betas grows at a rate equal to and slower than the number of test assets, respectively: this growth rate...