U.S. equities traded lower on Friday as concerns the Federal Reserve might raise interest rates this month loomed following a speech made by a Fed official, while eyeing falling oil prices. "The commentary from a voting member that the Fed may be forced to raise rates is important," said Kim Forrest, senior equity analyst at Fort Pitt Capital. "I think the market needs to understand that there may be a rate hike coming. Whether it's September or December, it doesn't matter big picture." The Dow Jones industrial average fell more than 300 points lower, with 3M and Boeing contributing the...