Gold Fields Ltd ADR (GFI) had the lowest return in 2013 by a large-cap US stock, returning -70.1%.

ASSET	YEAR	% RETURN
Gold Fields Ltd ADR (GFI)	2013	-70.1%
AngloGold Ashanti (AU)	2013	-62.74%
Kinross Gold (KGC)	2013	-55.58%
Sociedad Quimica y Minera de Chile SA ADR B (SQM)	2013	-54.21%
Barrick Gold (GOLD)	2013	-49.65%
Newmont Goldcorp (NEM)	2013	-49.49%
Agnico Eagle Mines (AEM)	2013	-49.43%
Wheaton Precious Metals (WPM)	2013	-44.91%
Ecopetrol SA ADR (EC)	2013	-33.69%
Petroleo Brasileiro Petrobras SA ADR (PBR)	2013	-29.59%
Franco-Nevada (FNV)	2013	-28.89%
Edwards Lifesciences (EW)	2013	-28.46%
Teck Resources Ltd Class B (TECK)	2013	-28.23%
Vale SA ADR (VALE)	2013	-26.08%
Sarepta Therapeutics (SRPT)	2013	-25.06%
Southern Copper (SCCO)	2013	-24.66%
Intuitive Surgical (ISRG)	2013	-24.17%
Lululemon Athletica (LULU)	2013	-24.06%
Petróleo Brasileiro SA - Petrobras (PBR.A)	2013	-22.5%
Banco Bradesco SA ADR (BBD)	2013	-18.31%
Coca-Cola Femsa SAB de CV ADR (KOF)	2013	-17.68%
FirstEnergy (FE)	2013	-17.47%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	2013	-16.03%
ICICI Bank (IBN)	2013	-15.93%
Veeva Systems Inc Class A (VEEV)	2013	-15.53%

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