Stocks appear headed for a mixed open as investors keep a wary eye on developments in Europe. Leaders of the Group of 20 nations are meeting in Mexico on Monday and Tuesday. Europe is on the top of the agenda, though analysts aren't expecting any significant policy announcements. Anticipation is higher about the Fed's two-day meeting, which ends Wednesday. Oracle made a surprise earnings announcement after the bell Monday, lifting its shares. Microsoft unveiled a Windows tablet computer and jumped after-hours. Bullish sentiment prevails.
