what is the most performance mid cap stock between july 2012 and december 2012

Par Pacific (PARR) had the highest return between July 1, 2012 and December 31, 2012 by a mid-cap US stock, returning 1,900%.

ASSETDATE% RETURN
Par Pacific (PARR)
7/1/2012 - 12/31/2012
1,900%
Sarepta Therapeutics (SRPT)
7/1/2012 - 12/31/2012
599.76%
Vipshop (VIPS)
7/1/2012 - 12/31/2012
194.89%
ACADIA Pharmaceuticals (ACAD)
7/1/2012 - 12/31/2012
165.71%
SkyWest (SKYW)
7/1/2012 - 12/31/2012
92.44%
Radian (RDN)
7/1/2012 - 12/31/2012
85.39%
CVR Energy (CVI)
7/1/2012 - 12/31/2012
81.99%
Louisiana-Pacific (LPX)
7/1/2012 - 12/31/2012
77.57%
Travere Therapeutics (TVTX)
7/1/2012 - 12/31/2012
76.32%
Archrock (AROC)
7/1/2012 - 12/31/2012
71.92%
Whirlpool (WHR)
7/1/2012 - 12/31/2012
67.63%
Ambarella (AMBA)
7/1/2012 - 12/31/2012
66.17%
Ducommun (DCO)
7/1/2012 - 12/31/2012
64.5%
KB Home (KBH)
7/1/2012 - 12/31/2012
64.25%
Skeena Resources (SKE)
7/1/2012 - 12/31/2012
64%
Mueller Water Products (MWA)
7/1/2012 - 12/31/2012
63.43%
Lithia Motors (LAD)
7/1/2012 - 12/31/2012
62.92%
Sirius XM (SIRI)
7/1/2012 - 12/31/2012
59.95%
Terex (TEX)
7/1/2012 - 12/31/2012
57.83%
BlackBerry (BB)
7/1/2012 - 12/31/2012
57.64%
Eagle Materials (EXP)
7/1/2012 - 12/31/2012
57.1%
Nexstar Broadcasting (NXST)
7/1/2012 - 12/31/2012
55.97%
IPG Photonics (IPGP)
7/1/2012 - 12/31/2012
54.43%
Grupo Simec SAB de CV ADR (SIM)
7/1/2012 - 12/31/2012
53.76%
M/I Homes (MHO)
7/1/2012 - 12/31/2012
52.83%
Mid-cap stocks are treated as having a market cap between $2B and $10B.