QXO (QXO) had the highest return in July 2005 by a large-cap US stock, returning 155.6%.

ASSET	MONTH	% RETURN
QXO (QXO)	July 2005	155.56%
Intuitive Surgical (ISRG)	July 2005	48.48%
MicroStrategy (MSTR)	July 2005	44.02%
Alnylam Pharmaceuticals (ALNY)	July 2005	36.36%
Amazon (AMZN)	July 2005	35.83%
Amgen (AMGN)	July 2005	31.94%
Allegheny Technologies (ATI)	July 2005	31.54%
Teradyne (TER)	July 2005	29.2%
Garmin (GRMN)	July 2005	27.35%
ON Semiconductor (ON)	July 2005	25.11%
Reliance Steel & Aluminum (RS)	July 2005	24.92%
eBay (EBAY)	July 2005	24.79%
Woori Financial (WF)	July 2005	24.3%
ArcelorMittal SA ADR (MT)	July 2005	23.39%
Old Dominion Freight Line (ODFL)	July 2005	23.21%
Dycom Industries (DY)	July 2005	23.11%
Builders FirstSource (BLDR)	July 2005	22.7%
Logitech International (LOGI)	July 2005	22.43%
Steel Dynamics (STLD)	July 2005	22.28%
Waters (WAT)	July 2005	21.56%
Charles Schwab (SCHW)	July 2005	21.45%
Sociedad Quimica y Minera de Chile SA ADR B (SQM)	July 2005	21.39%
Carpenter Technology (CRS)	July 2005	20.93%
Grupo Cibest (CIB)	July 2005	20.7%
Nasdaq (NDAQ)	July 2005	20.1%

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