Although Sarbanes-Oxley scared some foreign firms away from US markets, a new study shows that, on average, foreign firms that have cross-listed in the US are valued 13.9% higher than those not listed in the US. The premiums vary by country and business sector, with firms in Canada, France, Germany, Russia, Singapore, Switzerland and the UK among the most consistent. This is also true of stock of companies in the mining, transportation, communications and services sectors.
The study is available on the NYSE's web site. Here's the link: