sandp stocks highest return from march 2011 to april 2011

Biogen (BIIB) had the highest return between March 1, 2011 and April 30, 2011 by a US stock in the S&P 500 (GSPC), returning 42.7%.

ASSETDATE% RETURN
Biogen (BIIB)
3/1/2011 - 4/30/2011
42.74%
Seagate Technology (STX)
3/1/2011 - 4/30/2011
41.03%
Regeneron Pharmaceuticals (REGN)
3/1/2011 - 4/30/2011
40.1%
Incyte (INCY)
3/1/2011 - 4/30/2011
34.5%
Western Digital (WDC)
3/1/2011 - 4/30/2011
29.9%
Charter Communications (CHTR)
3/1/2011 - 4/30/2011
29.4%
Lululemon Athletica (LULU)
3/1/2011 - 4/30/2011
29.01%
Ulta Beauty (ULTA)
3/1/2011 - 4/30/2011
28.48%
Westinghouse Air Brake Technologies (WAB)
3/1/2011 - 4/30/2011
25.38%
Expedia (EXPE)
3/1/2011 - 4/30/2011
25.38%
Moodys (MCO)
3/1/2011 - 4/30/2011
22.54%
Albemarle (ALB)
3/1/2011 - 4/30/2011
22.22%
Pool (POOL)
3/1/2011 - 4/30/2011
22.06%
Molina Healthcare (MOH)
3/1/2011 - 4/30/2011
21.99%
Contura Energy (CTRA)
3/1/2011 - 4/30/2011
21.87%
Booking (BKNG)
3/1/2011 - 4/30/2011
21.56%
Old Dominion Freight Line (ODFL)
3/1/2011 - 4/30/2011
21.3%
Insulet (PODD)
3/1/2011 - 4/30/2011
21.14%
NRG Energy (NRG)
3/1/2011 - 4/30/2011
20.88%
Cooper Companies (COO)
3/1/2011 - 4/30/2011
20.81%
Williams-Sonoma (WSM)
3/1/2011 - 4/30/2011
19.87%
Wynn Resorts (WYNN)
3/1/2011 - 4/30/2011
19.31%
CoStar (CSGP)
3/1/2011 - 4/30/2011
19.29%
Centene (CNC)
3/1/2011 - 4/30/2011
18.9%
Agilent Technologies (A)
3/1/2011 - 4/30/2011
18.89%