Tue, Jan 27, 2015, 5:40 AM EST - U.S. Markets open in 3 hrs 50 mins

Mixed earnings, Greek jitters fuel market caution

The euro rose and shares slipped in Europe on Tuesday as mixed corporate earnings and concerns over Greece kept investors cautious ahead of a busy week which will include the first policy meeting of the U.S. Federal Reserve this year. Russian markets were also jittery after a cut to the country's sovereign credit rating. Investors will be keen to hear the Fed's response to the recent policy easing by global…