The influence of standard and poor’s ranking changes on stock price performance
Abstract
Describes Standard and Poor’s (S&P: USA) star ranking system for firm performance and presents a study of the impact of ranking changes on share prices. Outlines previous research on the effect of ranking changes and examines the share prices for 70 days before and after S&P ranking change announcements 1993‐1995 to assess abnormal returns. Explains the methodology and presents the results, which show significant changes in abnormal returns around the announcement dates, especially where the change is “in leaps rather than in steps”.
Keywords
Citation
Mulugetta, A., Movassaghi, H. and Zaman, R. (2002), "The influence of standard and poor’s ranking changes on stock price performance", Managerial Finance, Vol. 28 No. 4, pp. 19-30. https://doi.org/10.1108/03074350210767807
Publisher
:MCB UP Ltd
Copyright © 2002, MCB UP Limited