It is a well accepted fact that stock returns data are often contaminated by market microstructure effects, such as bid-ask spreads, liquidity ratios, turnover, and asymmetric information. This is particularly relevant when dealing with high frequency data, which are often used to compute model...

Implied volatility generated from observed option prices reflects market expectations of future volatility. This paper determines whether or not, implied volatilities, and hence market expectations, contain any genuinely forward looking information not already captured by historical information....

It is a well accepted fact that stock returns data are often characterized by market microstructure effects, such as bid-ask spreads, liquidity ratios, turnover and asymmetric information. This is particularly relevant when dealing with high frequency data, which are often used to compute model...

Recorded prices are known to diverge from their "efficient" values due to the presence of market microstructure contaminations. The microstructure noise creates a dichotomy in the model-free estimation of integrated volatility. While it is theoretically necessary to sum squared returns that are...

This paper derives results for the temporal aggregation of multivariate GARCH processes in the general vector specification. It is shown that the class of weak multivariate GARCH processes is closed under temporal aggregation. Fourth moment characteristics turn out to be crucial for the low...

Today?s level of financial integration and development of international capital markets is often compared to the pre-World War I Gold Standard. However, the propensity to currency crises seems higher today than in the past. Furthermore, the dynamics of crises has changed: In the most recent...

This paper examines stock market behaviour in India, Sri Lanka, Pakistan, and Bangladesh employing unit root tests, autocorrelation tests and spectral analysis. Evidence suggests that all markets exhibit a random walk. The multivariate cointegration tests based upon the Johansen Juselius (1988,...

En este trabajo se estima una tasa natural de desempleo para Colombia en el período 1984-2006. Siguiendo el modelo de negociación de salarios de Blanchard (1991), se emplea un filtro de Kalman, para estimar un sistema de ecuaciones para la tasa natural de desempleo, el desajuste del mercado...

The long-run component of the Colombian unemployment rate is estimated for the last twenty years. According to the results, the main determinants of the permanent component of the unemployment rate are the real hourly wage, the non-wage labor costs and the rate of capital accumulation. Given the...

En este documento se propone utilizar la metodología de perfiles coincidentes propuesta por Martínez (2010), con el fin de determinar si un conjunto de indicadores obtenidos de encuestas de opinión y otras fuentes son coincidentes o líderes de los indicadores económicos observables y, que...