End of the Day: S&P 500 down 3.1 to 1,964.82; Dow Jones down 17.8 to 16,991.91; Nasdaq down 20.8 to 4,454.80
* Becton Dickinson (NYSE: BDX) said it has agreed to acquire CareFusion (NYSE: CFN) for $58 per share in cash and stock.
* GT Advanced Technologies (Nasdaq: GTAT) announced that it had, together with certain of its direct and indirect subsidiaries (collectively, GT), commenced voluntary cases under chapter 11 of the Bankruptcy Code in the United States Bankruptcy Court for the District of New Hampshire. GT expects the