End of the Day: S&P 500 down 31.4 to 1,874.74; Dow Jones down 223.0 to 16,321.07; Nasdaq down 62.6 to 4,213.66
* Targa Resources Partners (NYSE: NGLS) and Targa Resources Corp. (NYSE: TRGP) announced they have entered into agreements to acquire Atlas Pipeline Partners, L.P. (NYSE: APL) and Atlas Energy, L.P. (NYSE: ATLS). Targa Resources will acquire ATLS following the spin-off announced today by ATLS of its non-midstream assets. The acquisitions are contingent on one another, and the transactions will close concurrently.
* J.C. Penney (NYSE: JCP) announced the