Inventrust Properties (IVT) had the highest return between 2014 and 2016 by a mid-cap US stock, returning 743,020%.

ASSET	YEARS	% RETURN
Inventrust Properties (IVT)	2014-2016	743,020%
Green Brick Partners (GRBK)	2014-2016	752.2%
Pampa Energia SA ADR (PAM)	2014-2016	558.03%
NexGen Energy (NXE)	2014-2016	503.86%
CleanSpark (CLSK)	2014-2016	425%
DXC Technology (DXC)	2014-2016	348.73%
Transportadora de Gas del Sur SA ADR (TGS)	2014-2016	327.23%
Alpha Metallurgical Resources (AMR)	2014-2016	320.74%
Applied Digital (APLD)	2014-2016	300%
RadNet (RDNT)	2014-2016	283.93%
IES (IESC)	2014-2016	271.12%
Supernus Pharmaceuticals (SUPN)	2014-2016	236.22%
Installed Building Products (IBP)	2014-2016	235.77%
Caesars Entertainment (CZR)	2014-2016	232.35%
Tower Semiconductor (TSEM)	2014-2016	226.42%
InterDigital (IDCC)	2014-2016	225.24%
Silicon Motion Technology (SIMO)	2014-2016	221.26%
TAL Education (TAL)	2014-2016	218.86%
Burford Capital (BUR)	2014-2016	213.82%
Skyline (SKY)	2014-2016	204.34%
Galapagos NV ADR (GLPG)	2014-2016	203.58%
JBTMarel (JBTM)	2014-2016	201.54%
Dycom Industries (DY)	2014-2016	190.91%
Mercury Systems (MRCY)	2014-2016	187.9%
Globant (GLOB)	2014-2016	187.5%

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