Darling Ingredients (DAR) had the highest return in July 2001 by a mid-cap US stock, returning 80%.

ASSET	MONTH	% RETURN
Darling Ingredients (DAR)	July 2001	80%
Option Care Health (OPCH)	July 2001	55.59%
Merit Medical Systems (MMSI)	July 2001	41.57%
Choice Hotels International (CHH)	July 2001	38.69%
Power Integrations (POWI)	July 2001	37.72%
United Community Banks (UCB)	July 2001	37.5%
Inter Parfums (IPAR)	July 2001	36.8%
Euronet Worldwide (EEFT)	July 2001	32.56%
United States Lime & Minerals (USLM)	July 2001	32.39%
LCI Industries (LCII)	July 2001	31.75%
Dorman Products (DORM)	July 2001	30.29%
Wintrust Financial (WTFC)	July 2001	28.66%
Bruker (BRKR)	July 2001	27.78%
Meritage (MTH)	July 2001	27.6%
Credit Acceptance (CACC)	July 2001	26.93%
Rush Enterprises B (RUSHB)	July 2001	26.66%
Onto Innovation (ONTO)	July 2001	26.44%
Mohawk Industries (MHK)	July 2001	24.96%
SkyWest (SKYW)	July 2001	23.99%
Sharplink Gaming (SBET)	July 2001	23.46%
FirstCash (FCFS)	July 2001	23.27%
Seaboard (SEB)	July 2001	22.92%
Gentex (GNTX)	July 2001	22.81%
Autoliv (ALV)	July 2001	21.86%
Pilgrims Pride (PPC)	July 2001	20.16%

Mid-cap stocks are treated as having a market cap between $2B and $10B.