A trader works on the floor of the New York Stock Exchange. -- PHOTO: AFP NEW YORK (AFP) - US stocks rallied on Monday, buoyed by a raft of big merger and acquisition announcements in the banking and tech sectors. The Dow Jones Industrial Average leaped 210.48 points (1.87 per cent) to 11,479.50 in closing trade, clocking its third straight session in positive territory. The broader S&P 500 was up 25.43 points (2.16 per cent) at 1,204.24, and the Nasdaq Composite gained 46.81 points (1.87 per cent) to 2,554.79. After a roller-coaster week, Wall Street bulls were ready to take the markets higher.