Exelixis (EXEL) had the worst year in 2014 by a large-cap US stock in 2014, returning -76.6%.

ASSET	YEAR	% RETURN
Exelixis (EXEL)	2014	-76.59%
Ecopetrol SA ADR (EC)	2014	-51.97%
Teck Resources Ltd Class B (TECK)	2014	-44.42%
Petroleo Brasileiro Petrobras SA ADR (PBR)	2014	-43.76%
Petróleo Brasileiro SA - Petrobras (PBR.A)	2014	-43.3%
Vale SA ADR (VALE)	2014	-42.81%
Alamos Gold (AGI)	2014	-40.92%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	2014	-40.53%
Barrick Gold (GOLD)	2014	-39.41%
Kinross Gold (KGC)	2014	-36.63%
ArcelorMittal SA ADR (MT)	2014	-36.35%
Antero Resources (AR)	2014	-35.74%
Freeport-McMoran Copper & Gold (FCX)	2014	-35.73%
Ubiquiti Networks (UI)	2014	-35.08%
Deutsche Bank (DB)	2014	-30.91%
Tapestry (TPR)	2014	-30.79%
Advanced Micro Devices (AMD)	2014	-30.65%
Jacobs Solutions (J)	2014	-29.81%
GameStop (GME)	2014	-28.95%
Tenaris SA ADR (TS)	2014	-28.84%
AngloGold Ashanti (AU)	2014	-28.32%
Sumitomo Mitsui Financial (SMFG)	2014	-27.89%
BHP (BHP)	2014	-27.24%
Harmony Gold Mining (HMY)	2014	-27.03%
Coca-Cola Femsa SAB de CV ADR (KOF)	2014	-26.55%

Large-cap stocks are treated as having a market cap of $10B+.