issue is particularly important for persistent time series, we focus on volatility modelling, specifically modelling of … realized volatility. We suggest a simple way of adjusting volatility models, which we illustrate on an AR(1) model and the HAR … more than 15 years, and we find that our extension improves the volatility models—both in sample and out of sample. For HAR …

by estimating the intermittency parameter and forecasting of volatility for a sample of financial data from stock and … foreign exchange markets. -- Random Lognormal cascades ; GMM estimation ; best linear forecasting ; volatility of financial …

We find a robust negative effect of exchange rate volatility on S&P500 company returns. The Consumer Discretionary and … the Consumer Staple sectors have more significant negative exposure to exchange rate volatility than the other sectors … thus supporting the hypothesis that exchange rate volatility affects stock returns through the channel of international …

- and second-moment exchange rate exposure on individual firm value and the stock return volatility underlying exchange rate … equity financing cost. -- exchange rate exposure ; asymmetric currency exposure ; financial crises ; asymmetric volatility …

This paper examines the effect of foreign exchange news announcements on the volatility of stock returns in Nigeria … volatility equations. The empirical results revealed a positive and significant effect of exchange news announcements on stock … market volatility in Nigeria under symmetric conditional variance. However, there was strong evidence of asymmetric effect …