This paper disentangles direct spillovers and common factors, the sources of correlations in simultaneous heteroscedastic systems. While these different components are not identifiable by standard means without restrictions, it is shown that they can be distinguished by specifying the variances...

This paper gives an overview of some issues related to market aluation, focusing on the developments on the New York equity markets. The 42.4 p.c. fall in the S&P 500 price index between 24 March 2000 - when it reached its all-time high - and 31 December 2002 is situated in a very long term...

In the paper we study the relationship between macroeconomic and stock market volatility, using S&P500 data for the period 1970- 2001. We find evidence of both long memory and structural change in volatility and a twofold linkage between stock market and macroeconomic volatility. In terms of the...

We propose a dynamic portfolio selection model that maximizes expected returns subject to a Value-at-Risk constraint. The model allows for time varying skewness and kurtosis of portfolio distributions estimating the model parameters by weighted maximum likelihood in a increasing window setup. We...

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...

We construct an empirical model for daily highs and daily lows of US stock indexes based on the intuition that highs and lows do not drift apart over time. Our empirical results show that daily highs and lows of three main US stock price indexes are cointegrated. Data on openings, closings, and...