Vertex Pharmaceuticals (VRTX) had the highest return on December 14, 2011 by a US stock in the S&P 500 (GSPC), returning 3.8%.

ASSET	DATE	% RETURN
Vertex Pharmaceuticals (VRTX)	12/14/2011	3.84%
Blackstone (BX)	12/14/2011	3.56%
Progressive (PGR)	12/14/2011	3.45%
Universal Health Services (UHS)	12/14/2011	3.39%
Huntington Ingalls Industries (HII)	12/14/2011	2.58%
Cooper Companies, Inc Common Stock (COO)	12/14/2011	2.49%
HCA (HCA)	12/14/2011	2.18%
Netflix (NFLX)	12/14/2011	2.1%
JPMorgan Chase (JPM)	12/14/2011	2.04%
Wells Fargo (WFC)	12/14/2011	1.85%
Merck (MRK)	12/14/2011	1.8%
Principal Financial (PFG)	12/14/2011	1.78%
GE Aerospace (GE)	12/14/2011	1.65%
Assurant (AIZ)	12/14/2011	1.61%
Danaher (DHR)	12/14/2011	1.59%
Truist Financial (TFC)	12/14/2011	1.4%
Hartford Financial Services (HIG)	12/14/2011	1.37%
Lowe's Companies (LOW)	12/14/2011	1.32%
Aon (AON)	12/14/2011	1.28%
Allstate (ALL)	12/14/2011	1.27%
Freeport-McMoran Copper & Gold (FCX)	12/14/2011	1.22%
Marsh & McLennan Companies (MMC)	12/14/2011	1.22%
American International (AIG)	12/14/2011	1.15%
Waste Management (WM)	12/14/2011	1.15%
Globe Life (GL)	12/14/2011	1.15%