Unable to find interested investors domestically, US companies, like Reva Medical, are looking abroad for money. Due to the financial crisis, the US markets have not been giving domestics companies a chance, but in foreign markets, these companies have been find investors ready and willing to buy shares. With companies merging, going out of business, or sold to bigger companies, and with a barely open market, the number of American companies has seen a 40% decline. This trend suggests a more global outlook for stocks.
See "Fleeing to Foreign Shores", Graham Bowley, The New York Times, June 7, 2011