Business Commons^™

A Closer Look At Firm--Group "Closeness", Jonathan Ross

Theses and Dissertations--Accountancy

Firm closeness or comparability is an important concept to investors. Knowing that two firms have been historically close and observing an information announcement by one of the firms gives the investor cues as to the future performance of the other firm. Furthermore, from a methodological point of view, researchers commonly control for firm--group closeness by using industrial classification schemes such as the SIC. To the extent that these schemes group dissimilar firms, the advantage of using these schemes is undermined. This paper more formally examines the comparability concept and develops two new measures of firm--group accounting closeness. Both measures are …