Patrick Industries (PATK) had the highest return between 2011 and 2017 by a mid-cap US stock in the Nasdaq Composite (IXIC), returning 3,355.2%.

ASSET	YEARS	% RETURN
Patrick Industries (PATK)	2011-2017	3,355.25%
ACADIA Pharmaceuticals (ACAD)	2011-2017	2,430.25%
Travere Therapeutics (TVTX)	2011-2017	2,241.11%
Caesars Entertainment (CZR)	2011-2017	1,517.07%
Ligand Pharmaceuticals (LGND)	2011-2017	1,426.52%
Nexstar Broadcasting (NXST)	2011-2017	1,320.65%
Silicon Motion Technology (SIMO)	2011-2017	1,301.28%
Align Technology (ALGN)	2011-2017	1,025.01%
MarketAxess (MKTX)	2011-2017	975.67%
CleanSpark (CLSK)	2011-2017	838.47%
National Beverage (FIZZ)	2011-2017	803.42%
Cognex (CGNX)	2011-2017	783.73%
Ambarella (AMBA)	2011-2017	775.56%
Cidara Therapeutics (CDTX)	2011-2017	750%
Addus HomeCare (ADUS)	2011-2017	730.55%
Repligen (RGEN)	2011-2017	671.91%
IPG Photonics (IPGP)	2011-2017	579.62%
Jazz Pharmaceuticals (JAZZ)	2011-2017	577.31%
Saia (SAIA)	2011-2017	539.69%
Weibo (WB)	2011-2017	535.9%
Supernus Pharmaceuticals (SUPN)	2011-2017	513.08%
ICU Medical (ICUI)	2011-2017	486.16%
Galapagos NV ADR (GLPG)	2011-2017	483.23%
Pilgrims Pride (PPC)	2011-2017	476.33%
Churchill Downs (CHDN)	2011-2017	466.45%

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