Arping, Stefan; Sautner, Zacharias - 2010 - This version: November 2010
We study whether the Sarbanes-Oxley Act (SOX) of 2002 made firms less opaque. For identification, we use a difference-in-differences estimation approach and compare EU firms that are cross-listed in the US-and therefore subject to SOX-with comparable EU firms that are not cross-listed. We derive...