First Solar (FSLR) had the lowest return in March 2017 by a US stock in the S&P 500 (GSPC), returning -25.8%.

ASSET	MONTH	% RETURN
First Solar (FSLR)	March 2017	-25.83%
Lululemon Athletica (LULU)	March 2017	-21.53%
Transdigm (TDG)	March 2017	-13.45%
Viatris (VTRS)	March 2017	-12.07%
Enphase Energy (ENPH)	March 2017	-11.61%
Corpay (CPAY)	March 2017	-11.44%
Howmet Aerospace (HWM)	March 2017	-10.1%
Citizens Financial (CFG)	March 2017	-10.07%
CarMax (KMX)	March 2017	-9.6%
Goldman Sachs (GS)	March 2017	-9.46%
Truist Financial (TFC)	March 2017	-9.05%
Delta Air Lines (DAL)	March 2017	-8.83%
Halliburton (HAL)	March 2017	-8.82%
Capital One Financial (COF)	March 2017	-8.78%
Morgan Stanley (MS)	March 2017	-8.75%
M&T Bank (MTB)	March 2017	-8.39%
Norfolk Southern (NSC)	March 2017	-8.37%
Huntington Ingalls Industries (HII)	March 2017	-8.36%
Fifth Third Bancorp (FITB)	March 2017	-8.35%
CF Industries (CF)	March 2017	-8.25%
LKQ (LKQ)	March 2017	-8.24%
FactSet Research Systems (FDS)	March 2017	-8.22%
Ford Motor (F)	March 2017	-8.06%
Axon Enterprise (AXON)	March 2017	-7.99%
Southwest Airlines (LUV)	March 2017	-7.9%