Harmony Gold Mining (HMY) had the highest return in January 2016 by a US stock in the Materials Sector, returning 70.5%.

ASSET	MONTH	% RETURN
Harmony Gold Mining (HMY)	January 2016	70.47%
DRDGOLD Limited ADR (DRD)	January 2016	66.67%
Sibanye Gold Ltd ADR (SBSW)	January 2016	45.01%
Barrick Gold (GOLD)	January 2016	28.87%
Gold Fields Ltd ADR (GFI)	January 2016	24.55%
Tanzanian Royalty Exploration (TRX)	January 2016	20.67%
US Gold (USAU)	January 2016	19.1%
AngloGold Ashanti (AU)	January 2016	17.13%
Lightwave Logic (LWLG)	January 2016	16.24%
Fury Gold Mines (FURY)	January 2016	16.21%
Taseko Mines (TGB)	January 2016	14.91%
NioCorp Developments Ltd Common Stock (NB)	January 2016	14.68%
McEwen Mining (MUX)	January 2016	12.84%
International Tower Hill Mines (THM)	January 2016	12.26%
Fortuna Silver Mines (FSM)	January 2016	10.39%
SunCoke Energy (SXC)	January 2016	10.2%
Century Aluminum (CENX)	January 2016	10.02%
Metallus (MTUS)	January 2016	9.08%
Agnico Eagle Mines (AEM)	January 2016	9.04%
Newmont Goldcorp (NEM)	January 2016	8.24%
POSCO (PKX)	January 2016	7.85%
Comstock Mining (LODE)	January 2016	7.5%
Scotts Miracle-Gro (SMG)	January 2016	7.43%
Ampco-Pittsburgh (AP)	January 2016	6.15%
Hawkins (HWKN)	January 2016	5.97%