US STOCKS-Wall St drops on global growth worry, slowing M&A activity By: Reuters: Company News October 15, 2014 at 10:15 AM EDT * Indexes off: Dow 1.15 pct, S&P 1.15 pct, Nasdaq 1.09 pct (Updates to open) Read More >> Related Stocks: AbbVie Bank of America KeyCorp Nxp Semiconductors Shire Plc Ads Southwestern Energy