American International (AIG) had the highest return in March 2009 by a US stock in the S&P 500 (GSPC), returning 92.3%.

ASSET	MONTH	% RETURN
American International (AIG)	March 2009	92.31%
Bank of America (BAC)	March 2009	89.44%
Citigroup (C)	March 2009	68.67%
Blackstone (BX)	March 2009	59.34%
Celanese (CE)	March 2009	58.41%
Lululemon Athletica (LULU)	March 2009	54.09%
Qorvo (QRVO)	March 2009	49.44%
Seagate Technology (STX)	March 2009	46.59%
Fifth Third Bancorp (FITB)	March 2009	45.87%
Western Digital (WDC)	March 2009	45.63%
CBRE Group Inc Class A (CBRE)	March 2009	43.93%
Advanced Micro Devices (AMD)	March 2009	43.19%
Raymond James Financial (RJF)	March 2009	42.01%
CME (CME)	March 2009	39.69%
Masco (MAS)	March 2009	39.61%
Royal Caribbean Cruises (RCL)	March 2009	38.1%
Ford Motor (F)	March 2009	37.7%
Regions Financial (RF)	March 2009	37.49%
Jabil Circuit (JBL)	March 2009	37.29%
BlackRock (BLK)	March 2009	36.85%
Globe Life (GL)	March 2009	36.83%
Take-Two Interactive Software (TTWO)	March 2009	36.66%
State Street (STT)	March 2009	35.4%
Mohawk Industries (MHK)	March 2009	35.22%
Eastman Chemical (EMN)	March 2009	34.84%