keywords: stocks greenspan dropped investors fall
text: Stocks Fall, Jolted by Oil and Greenspan  NEW YORK (Reuters) - U.S. stocks dropped on Friday as  investors were jolted by a jump in oil prices and comments by  U.S. Federal Reserve Chairman Alan Greenspan, who gave a blunt  reminder that interest rates were bound to go up and warned the  appetite for U.S. assets would eventually dwindle.