We test for a change in the volatility of 215 US macroeconomic time series over the period 1960-1996. We find that … about 90\\% of these series have experienced a break in volatility during this period. This result is robust to controlling … for instability in the mean and business cycle nonlinearities. Real variables have seen a reduction in volatility since …

this paper is to analyze these two indexes in order to capture ENSO volatility. The empirical results show that both the … ARMA(1,1)-GARCH(1,1) and ARMA(3,2)-GJR(1,1) models are suitable for modelling ENSO volatility. Moreover, 1998 is a turning … point for the volatility of SOI, and the ENSO volatility has became stronger since 1998 which indicates that the ENSO …

Volatility breaks are tested and documented for 19 important monthly macroeconomic time series across the G7 countries … structural break, volatility breaks are found to be widespread. This continues to hold when business cycle nonlinearities are … allowed in the variance. Multiple volatility breaks are also examined, and these are found to be especially prevalent for …

velocity volatility at both business cycle and long run frequencies. With filtered velocity turning negative, starting during …

reveal that higher margins have a much stronger negative relation to subsequent volatility in bull markets than in bear …

forward premia on monthly exchange rate returns in a framework that allows for volatility timing. We implement Bayesian … stochastic volatility innovations; and (ii) strategies based on combined forecasts yield large economic gains over the random …

outside the Union. The analysis indicates the need to distinguish between short-term oscillations (i.e. volatility) and medium …

Black/Scholes constant volatility assumption is violated in practice. These authors hypothesize that the volatility of the … underlying asset’s return is a deterministic function of the asset price and time, and develop the deterministic volatility … 1993, we evaluate the economic significance of the implied deterministic volatility function by examining the predictive …

volatility of state output growth, rather than in its average. The realized industry shares of output also converge faster to …

volatility. This paper focuses on extreme correlation, that is to say the correlation between returns in either the negative or … not for the positive tail. We also find that correlation is not related to market volatility per se but to the market …