Teck Resources Ltd Class B (TECK) had the highest return in Q1 2016 by a large-cap US stock, returning 107.9%.

ASSET	QUARTER	% RETURN
Teck Resources Ltd Class B (TECK)	Q1 2016	107.93%
AngloGold Ashanti (AU)	Q1 2016	89.09%
Kinross Gold (KGC)	Q1 2016	83.78%
Barrick Gold (GOLD)	Q1 2016	76.85%
Banco Bradesco S/A ADR (BBDO)	Q1 2016	69.73%
Banco Bradesco SA ADR (BBD)	Q1 2016	58.47%
Freeport-McMoran Copper & Gold (FCX)	Q1 2016	56.67%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	Q1 2016	46.34%
Gold Fields Ltd ADR (GFI)	Q1 2016	44.78%
Telefonica Brasil SA ADR (VIV)	Q1 2016	44.39%
Newmont Goldcorp (NEM)	Q1 2016	44.28%
Super Micro Computer (SMCI)	Q1 2016	42.71%
ArcelorMittal SA ADR (MT)	Q1 2016	42.34%
Wynn Resorts (WYNN)	Q1 2016	40.28%
Itau Unibanco Banco (ITUB)	Q1 2016	39.14%
POSCO (PKX)	Q1 2016	37.63%
Credicorp (BAP)	Q1 2016	37.24%
Centrais Electricas Brasileiras (EBR)	Q1 2016	35.88%
Dick’s Sporting Goods (DKS)	Q1 2016	35.2%
Petroleo Brasileiro Petrobras SA ADR (PBR)	Q1 2016	35.18%
Burlington Stores (BURL)	Q1 2016	34.42%
Agnico Eagle Mines (AEM)	Q1 2016	34.23%
Waste Connections (WCN)	Q1 2016	34.23%
Petróleo Brasileiro SA - Petrobras (PBR.A)	Q1 2016	33.63%
Vale SA ADR (VALE)	Q1 2016	32.81%

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