Wall Street pares gains as Yellen omits reference to rate hike timing

U.S. stocks pared some of their gains on Monday after Federal Reserve Chair Janet Yellen painted a mostly positive picture of the economy and said interest rates were still on their way, but was less specific on the timing. Yellen said "positive economic forces have outweighed the negative", but was more vague in her references to the timing of a rate hike than she had been in early May when she said the Fed could move "in coming months". Yellen's remarks, the last public comment from any U.S. c