We investigate the impact on Bitcoin returns arising from cyberattacks on digital exchanges. Using several alternative specifications we test the hypothesis that Bitcoin experiences lower returns on the dates associated with cybersecurity breaches of cryptocurrency markets. We find a negative...

Digital exchanges, which convert funds between national currencies and cryptocurrencies, are often the victims of cybersecurity attacks. We investigate the impact of such cybersecurity breaches on bitcoin returns. Using several alternative specifications we test the hypothesis that bitcoin...

Changes in residual volatility in vector autoregressive (VAR) models can be used for identifying structural shocks in a structural VAR analysis. Testable conditions are given for full identification for the case where the volatility changes can be modelled by a multivariate GARCH process. Formal...

Changes in residual volatility in vector autoregressive (VAR) models can be used for identifying structural shocks in a structural VAR analysis. Testable conditions are given for full identification for the case where the volatility changes can be modelled by a multivariate GARCH process. Formal...

Identification through heteroskedasticity in heteroskedastic simultaneous equations models (HSEMs) is considered. The possibility that heteroskedasticity identifies the structural parameters only partially is explicitly allowed for. The asymptoticproperties of the identified parameters are...

A portfolio of small capitalization stocks formed from securities listed on the Australian Stock Exchange (ASX) fails to adjust to market-wide news instantaneously and displays a significant amount of predictability from lagged returns on large and medium size firms. Despite apparently large...

This paper describes and explains changes in real house prices in Australia from 1970 to 2003. In the first part of the paper, we develop a national index of real house prices. We then discuss the main factors that determine real house prices and some previous attempts to model Australian house...

We present a new model to evaluate the volatility of futures returns. The model is a combination of Dynamic Conditional Correlation and an augmented EGARCH, which allows us to evaluate the differential effects of the trading activity of two classes of optimizing traders. We apply the model to...

We measure the reduction in realized portfolio risk that can be achieved by allowing for volatility spillover in forecasts of equity covariance. The conditional second moment matrix of equity returns for pairs of major European equity markets is estimated via two asymmetric dynamic conditional...