InterContinental Hotels Group PLC ADR (IHG) had the highest return between 2002 and 2003 by a large-cap US stock, returning 5,813,300%.

ASSET	YEARS	% RETURN
InterContinental Hotels Group PLC ADR (IHG)	2002-2003	5,813,300%
Thomson Reuters Corporation Common Shares (TRI)	2002-2003	5,119.93%
NetEase (NTES)	2002-2003	4,824.05%
Ovintiv (OVV)	2002-2003	4,656.5%
Cheniere Energy (LNG)	2002-2003	1,131.7%
Chunghwa Telecom (CHT)	2002-2003	1,042.49%
Hecla Mining (HL)	2002-2003	821.02%
Coeur Mining (CDE)	2002-2003	588.1%
Axon Enterprise (AXON)	2002-2003	502.55%
ArcelorMittal SA ADR (MT)	2002-2003	392.81%
Amazon (AMZN)	2002-2003	381.16%
Deckers Outdoor (DECK)	2002-2003	363.72%
Tractor Supply (TSCO)	2002-2003	355.39%
Southern Copper (SCCO)	2002-2003	317.86%
Royal Gold (RGLD)	2002-2003	313.7%
Dick’s Sporting Goods (DKS)	2002-2003	297.23%
Darling Ingredients (DAR)	2002-2003	294.29%
Tapestry (TPR)	2002-2003	292%
ICICI Bank (IBN)	2002-2003	291.8%
Old Dominion Freight Line (ODFL)	2002-2003	283.47%
Rambus (RMBS)	2002-2003	280.42%
Kinross Gold (KGC)	2002-2003	275.13%
Grupo Cibest (CIB)	2002-2003	269.51%
Align Technology (ALGN)	2002-2003	266.89%
Crown (CCK)	2002-2003	255.29%

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