Ovintiv (OVV) had the worst day between February 14, 2020 and March 24, 2020 by a large-cap US stock or large-cap US stock on March 9, 2020, returning -58.3%.

ASSET	DATE	% RETURN
Ovintiv (OVV)	3/9/2020	-58.35%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	3/24/2020	-40.27%
Permian Resources (PR)	3/9/2020	-39.26%
Targa Resources (TRGP)	3/9/2020	-38.55%
Western Midstream Partners (WES)	3/9/2020	-36.87%
Permian Resources (PR)	3/17/2020	-34.8%
Celsius (CELH)	3/16/2020	-33.75%
Banco Bradesco S/A ADR (BBDO)	3/24/2020	-32.87%
Cenovus Energy (CVE)	3/9/2020	-29.47%
BioNTech SE (BNTX)	3/19/2020	-28.73%
Performance Food (PFGC)	3/16/2020	-28.2%
Clean Harbors (CLH)	3/18/2020	-27.73%
Moderna (MRNA)	2/27/2020	-27.09%
Plains All American Pipeline (PAA)	3/18/2020	-27.05%
Targa Resources (TRGP)	3/17/2020	-26.88%
Targa Resources (TRGP)	3/18/2020	-26.09%
United Airlines (UAL)	3/18/2020	-25.79%
AerCap (AER)	3/12/2020	-25.41%
Aptiv (APTV)	3/18/2020	-24.4%
ONEOK (OKE)	3/18/2020	-23.3%
WESCO International (WCC)	3/18/2020	-23.19%
Performance Food (PFGC)	3/17/2020	-22.98%
Cenovus Energy (CVE)	3/17/2020	-22.8%
Ovintiv (OVV)	3/10/2020	-22.8%
Cheniere Energy Partners (CQP)	3/18/2020	-22.58%

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