Celsius (CELH) had the highest return in March 2009 by a US stock with a market cap of $2B+, returning 180%.

ASSET	MONTH	% RETURN
Celsius (CELH)	March 2009	180.02%
Sirius XM (SIRI)	March 2009	134.12%
Modine Manufacturing (MOD)	March 2009	127.27%
Avis Budget (CAR)	March 2009	116.69%
Pilgrims Pride (PPC)	March 2009	104.55%
American International (AIG)	March 2009	92.31%
Bank of America (BAC)	March 2009	89.44%
Nova (NVMI)	March 2009	89.19%
Nelnet (NNI)	March 2009	77.15%
Orix Corp Ads (IX)	March 2009	74.98%
Ashland Global (ASH)	March 2009	73.32%
BioCryst Pharmaceuticals (BCRX)	March 2009	72.44%
Teck Resources Ltd Class B (TECK)	March 2009	70.25%
Citigroup (C)	March 2009	68.67%
Barclays PLC ADR (BCS)	March 2009	68.65%
Genworth Financial (GNW)	March 2009	68.14%
Penske Automotive (PAG)	March 2009	67.2%
Madrigal Pharmaceuticals (MDGL)	March 2009	64.62%
Dillards (DDS)	March 2009	64.31%
Amkor Technology (AMKR)	March 2009	63.03%
Deutsche Bank (DB)	March 2009	60.67%
Ferguson (FERG)	March 2009	60.61%
Blackstone (BX)	March 2009	59.34%
Celanese (CE)	March 2009	58.41%
Mueller Water Products (MWA)	March 2009	57.89%