Dow Jones futures fell Monday morning, along with S&P 500 futures and Nasdaq futures after Moody's downgraded the U.S. sovereign debt rating on Friday.The stock market rally had a powerful week as the U.

Futures for the Dow Jones Industrial Average dropped 250 points, or 0.58%. S&P 500 futures slipped 0.6%, while Nasdaq futures fell 0.61%. The yield on the 10-year Treasury surged 4.6 basis point to 4.485% after Moody's downgraded the U.S. credit rating one notch late Friday to Aa1 from AAA, the highest grade.

U.S. stocks open lower after Moody's stripped the U.S. of its top credit rating. Treasury yields jump as investors demand more payout to hold US debt.