NEW YORK (AP) — U.S. stocks were little changed in early trading Monday after closing out October at record levels. The S&P 500 and the Dow closed at all-time highs on Friday after the Bank of Japan surprised investors by announcing it would increase its bond and asset purchases in an effort to try and stave off deflation. Strong company earnings also helped the stock market recover from an early October slump. French advertising group Publicis said Monday it would to buy Boston-based marketing, communications and consulting firm Sapient for $3.7 billion in cash. [...] that the Federal Reserve has shut down its bond buying program, investors are assessing when the Fed will start to raise interest rates. The Bank of Japan's announcement that it will increase its asset purchases weighed heavily on the Japanese yen, which continued to fall Monday.