. The results indicate that persistence is higher at lower frequencies, for both returns and their volatility. This is true …This paper investigates persistence in financial time series at three different frequencies (daily, weekly and monthly …

. The results indicate that persistence is higher at lower frequencies, for both returns and their volatility. This is true …This paper investigates persistence in financial time series at three different frequencies (daily, weekly and monthly …

This paper investigates persistence in high-frequency, intraday data (and also daily and monthly ones) in the case of … exponent as a measure of persistence. The results indicate that persistence is sensitive to the data frequency. More … addition, persistence varies over time. These findings imply that the Efficient Market Hypothesis (EMH) only holds in the case …

assets because they are updated more rapidly in response to news. This paper explores persistence in high-frequency data (and … trade records) using R/S analysis and the Hurst exponent as a measure of persistence. The results show that persistence is … intraday ones are anti-persistent. In addition, persistence varies over time. These findings imply that the Efficient Market …

This paper aims to select the best model or set of models for modelling volatility of the four most popular …

certain foreign exchange and U.S. Treasury security returns without contaminating estimates of their integrated volatility … without contaminating volatility estimates; bond returns may be sampled as frequently as once every 2 to 3 minutes on days … higher than those often recommended in the empirical literature on realized volatility in equity markets. The higher sampling …