4/6/2013: “U.S. Morning Call: S&P 500 welcomes back AIG and GM” (Reuters)
5/6/2013: “GM’s return to top continues as it rejoins S&P 500” (USA Today)
If some my readers want to know how General Motors came out of the slump see the Wikipedia-article “General Motors Chapter 11 reorganization“. Barack Obama backed financially the reorganization of GM.
See also: GM is Making a Remarkable Comeback – 1