Biomarin Pharmaceutical (BMRN) had the lowest return in August 2020 by a large-cap US stock, returning -35.2%.

ASSET	MONTH	% RETURN
Biomarin Pharmaceutical (BMRN)	August 2020	-35.16%
BioNTech SE (BNTX)	August 2020	-26.2%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	August 2020	-22.94%
Occidental Petroleum (OXY)	August 2020	-19.11%
Evergy (EVRG)	August 2020	-16.84%
Gfl Environmental (GFL)	August 2020	-15.43%
Hologic (HOLX)	August 2020	-15.41%
Itau Unibanco Banco (ITUB)	August 2020	-15.28%
Pure Storage (PSTG)	August 2020	-15.27%
Ambev SA ADR (ABEV)	August 2020	-14.45%
Teva Pharma Industries Ltd ADR (TEVA)	August 2020	-14.25%
Becton Dickinson and (BDX)	August 2020	-14.21%
Arista Networks (ANET)	August 2020	-14.06%
Moderna (MRNA)	August 2020	-13.4%
Quest Diagnostics (DGX)	August 2020	-12.91%
Datadog (DDOG)	August 2020	-12.81%
Coherent (COHR)	August 2020	-12.75%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	August 2020	-12.42%
ASE Industrial Holding Co Ltd ADR (ASX)	August 2020	-12.04%
Telefonica Brasil SA ADR (VIV)	August 2020	-11.73%
Lam Research (LRCX)	August 2020	-11.68%
Super Micro Computer (SMCI)	August 2020	-11.65%
Pinnacle West Capital (PNW)	August 2020	-11.62%
Sprouts Farmers Market LLC (SFM)	August 2020	-11.55%
Xpeng (XPEV)	August 2020	-11.26%

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