This paper examines volatility and correlation dynamics in price returns of gold, silver, platinum and palladium, and explores the corresponding risk management implications for market risk and hedging. Value-at-Risk (VaR) is used to analyze the downside market risk associated with investments...

This paper examines the impact of news on the volatility of equity returns in three sectors of the health care industry - health care service providers, producers of drugs and supplies, and third-party payors. The news impact is found to be asymmetric in that bad news (i.e., a negative shock)...