Bill Henderson (at the ELS Blog) has a very useful round-up of empirical papers presented at the recent ALEA conference. Blog-traveller Kate Litvak comes in for special praise:
Kate Litvak [presented] “The Effect of the Sarbanes-Oxley Act on Non-US Companies Listed in the U.S.,” which was an extremely well-done event study that used a natural experiment approach to capture the market reaction to SOX (it was generally negative). In the last couple of years, Kate, who does not have a PhD, has spent a lot of time learning sophisticated econometric techniques. It really showed. Very impressive (and easy to follow) presentation.
To be frank, I’ve been quite skeptical of studies showing a negative relationship between SOX and equity prices, on several grounds: (1) my practice experience managing the creation of event studies that dealt with changing legal regimes suggested that results are rarely as robust as one might hope; (2)) the passage and eventual implementation of SOX were so attenuated that event studies would seem hard to perform; and (3) the debate is quite politicized, with folks already disposed to dislike federalization of corporate law leading the charge on the empirical front as well. But, having read Kate’s paper, I’m inclined to rethink my position. It is well-worth a read.