Filtering intraday seasonality in volatility is crucial for using high frequency data in econometric analysis. This paper studies the effects of filtering on statistical inference concerning the impact of news on exchange rate volatility. The properties of different methods are studied using a...

What triggers extreme exchange-rate returns? Though news is the source of volatility in standard theoretical models, in reality volatility is often unrelated to news. This paper shows that extreme exchange-rate returns -- and, more generally, high kurtosis of returns -- are statistically...

In this paper, precise fault location in electrical traction network systems is discussed in the high-frequency domain. Based on the analysis of the equivalent impedance at the measurement terminal, the relationship between the fault distance and the frequency spectrum extreme points of the...

Securities are increasingly traded through multiple venues. Chowdhry and Nanda (1991) show that sophisticated investors benefit by splitting orders across markets at the cast of local investors who only trade through one venue. If trading hours do not perfectly overlap, we can test for...

We develop a discrete-time stochastic volatility option pricing model exploiting the information contained in the Realized Volatility (RV), which is used as a proxy of the unobservable log-return volatility. We model the RV dynamics by a simple and effective long-memory process, whose parameters...

This paper investigates how active price-contingent trading contributes to extreme returns even in the absence of news. Price-contingent trading, which is common across financial markets, includes algorithmic trading, technical trading, and dynamic option hedging. The paper highlights four...

A central question in financial economics is how private information is incorporated into asset prices. A common method of measuring private information is the PIN measure, which uses statistical estimation of a sequential trade model of the trading process to estimate the probability of...

Securities are increasingly traded through multiple venues. Chowdhry and Nanda (1991) show that sophisticated investors benefit by splitting orders across markets at the cast of local investors who only trade through one venue. If trading hours do not perfectly overlap, we can test for...

This study investigates empirically the presence of nonlinearities in the Athens Composite Share Price Index high-frequency returns. A preliminary analysis indicates that volatility exhibits a periodic intraday inverse J-shaped pattern, associated with the opening and closing of the market....