Published: Aug 08, 2011 11:20 AM EDT
Updated: Aug 08, 2011 3:08 PM EDT

BANGKOK (AP) -Asian stocks and Europe's main markets are trading lower today, but exchanges in Milan and Madrid are posting sizable gains following an announcement by the European Central Bank that it would buy Italy and Spain's bonds to help them avoid defaults. Wall Street is expected to open lower today, with Dow and S&P futures down.