Antero Resources (AR) had the lowest return between 2014 and 2019 by a large-cap US stock, returning -95.3%.

ASSET	YEARS	% RETURN
Antero Resources (AR)	2014-2019	-95.31%
Summit Therapeutics (SMMT)	2014-2019	-83.84%
Deutsche Bank (DB)	2014-2019	-78.68%
EQT (EQT)	2014-2019	-77.27%
Teva Pharma Industries Ltd ADR (TEVA)	2014-2019	-72.65%
PG&E (PCG)	2014-2019	-69.39%
YPF Sociedad Anonima (YPF)	2014-2019	-63.4%
Freeport-McMoran Copper & Gold (FCX)	2014-2019	-61.77%
Cemex SAB de CV ADR (CX)	2014-2019	-61.36%
Bloom Energy (BE)	2014-2019	-60.05%
Cenovus Energy (CVE)	2014-2019	-58.84%
TechnipFMC (FTI)	2014-2019	-55.89%
Devon Energy (DVN)	2014-2019	-54.44%
ArcelorMittal SA ADR (MT)	2014-2019	-54.39%
Permian Resources (PR)	2014-2019	-53.8%
Viatris (VTRS)	2014-2019	-53.67%
Contura Energy (CTRA)	2014-2019	-52.91%
Galaxy Digital (GLXY)	2014-2019	-51.87%
Cameco (CCJ)	2014-2019	-51.86%
GE Aerospace (GE)	2014-2019	-50.89%
Madrigal Pharmaceuticals (MDGL)	2014-2019	-50.32%
Equinox Gold (EQX)	2014-2019	-49.2%
Alamos Gold (AGI)	2014-2019	-48.96%
Plains All American Pipeline (PAA)	2014-2019	-46.43%
Schlumberger (SLB)	2014-2019	-45.96%

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