Ewing, Bradley T.; Kruse, Jamie B.; Thompson, Mark A. - In: Journal of Business Finance & Accounting 32 (2005-09) 7-8, pp. 1587-1611
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)...