This paper empirically tests the random walk and efficiency hypothesis for 12 Asia-Pacific foreign exchange markets. The hypothesis is tested using individual as well as panel unit root tests and two variance-ratio tests. The study covers the high (daily) and medium (weekly) frequency post-Asian...

We study the forecasting performance of the Fourier volatility estimator in the presence of microstructure noise. Analytical comparison and simulation studies indicate that the Fourier estimator significantly outperforms realized volatility type estimators in particular for high frequency data...

Given discrete time observations over a fixed time interval, we study a nonparametric Bayesian approach to estimation of the volatility coefficient of a stochastic differential equation. We postulate a histogram-type prior on the volatility with piecewise constant realisations on bins forming a...

This report discusses the preliminary results for the analysis of the Baltic Dry Index (BDI) using data mining techniques. The overall aim of the project is to investigate ways to identify trends or stages in the BDI associated with economic cycles, as well as other relationships with economic...

We put forward two jump-robust estimators of integrated volatility, namely realized information variation (RIV) and realized information power variation (RIPV). The "information" here refers to the difference between two-grid of ranges in high-frequency intervals, which preserves continuous...

This report focusses on three particular areas of risk, effectively covering high-level risk drivers, low-level risk interactions and finally cross-sectional risk opportunities.1) In prior work, we showed that a simple 3-factor global model explained a high percentage of local equity index...

English Abstract: Armed with the copula distribution function that describes the asymmetric tail dependence, and the marginal distributions that capture the fat-tailed behavior, we estimate risk measures such as the Value-at-Risk and expected shortfall and evaluate whether those from the...

We suggest a Gini-based statistical test for unit root. This test is based on the well-known Dickey-Fuller test, where the ordinary least squares (OLS) regression is replaced by the semi-parametric Gini regression in modeling the AR process. A residual-based bootstrap is used for finding...

A core tenet of financial economics states that, in a market populated by rational investors, the fundamental price of an asset equals the expected discounted present value of its cash flows. This implies, for example, that in a rational and efficient bubble-free market, stock price movements...

This paper develops a procedure for forecasting the distribution from which future stock prices/returns will be drawn fundamentally. Our methodology therefore provides a means for forecasting future stock prices and return volatilities and thus for fundamentally valuing assets such as stocks and...