Centrais Electricas Brasileiras (EBR) had the highest return in October 2018 by a US stock with a market cap of $20B+, returning 58.5%.

ASSET	MONTH	% RETURN
Centrais Electricas Brasileiras (EBR)	October 2018	58.52%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	October 2018	56.44%
Petróleo Brasileiro SA - Petrobras (PBR.A)	October 2018	40.74%
Petroleo Brasileiro Petrobras SA ADR (PBR)	October 2018	34.08%
Banco Bradesco SA ADR (BBD)	October 2018	29.98%
Banco Santander Brasil SA ADR (BSBR)	October 2018	29.65%
Banco Bradesco S/A ADR (BBDO)	October 2018	26.8%
Itau Unibanco Banco (ITUB)	October 2018	20.16%
Cboe Global Markets (CBOE)	October 2018	18.17%
Keurig Dr Pepper (KDP)	October 2018	12.37%
Tesla (TSLA)	October 2018	10.32%
Gold Fields Ltd ADR (GFI)	October 2018	9.46%
ICICI Bank (IBN)	October 2018	9.46%
AngloGold Ashanti (AU)	October 2018	8.79%
Philip Morris International (PM)	October 2018	8.18%
Comcast (CMCSA)	October 2018	7.92%
Altria (MO)	October 2018	7.79%
Verizon Communications (VZ)	October 2018	7.67%
Procter & Gamble (PG)	October 2018	7.39%
CME (CME)	October 2018	6.94%
General Motors (GM)	October 2018	6.68%
Walmart (WMT)	October 2018	6.35%
McDonald’s (MCD)	October 2018	5.07%
Hershey (HSY)	October 2018	4.79%
Xcel Energy (XEL)	October 2018	4.34%