what is the most performance mid cap stock between february 15 2012 and june 2012

Patrick Industries (PATK) had the highest return between February 15, 2012 and June 30, 2012 by a mid-cap US stock, returning 121%.

ASSETDATE% RETURN
Patrick Industries (PATK)
2/15/2012 - 6/30/2012
120.97%
Quantum Computing  (QUBT)
2/15/2012 - 6/30/2012
87.5%
Caesars Entertainment (CZR)
2/15/2012 - 6/30/2012
73.99%
HCI (HCI)
2/15/2012 - 6/30/2012
66.28%
Corcept Therapeutics (CORT)
2/15/2012 - 6/30/2012
63.27%
American Airlines (AAL)
2/15/2012 - 6/30/2012
47.29%
American Eagle Outfitters (AEO)
2/15/2012 - 6/30/2012
45.79%
Supernus Pharmaceuticals (SUPN)
2/15/2012 - 6/30/2012
44%
Grifols SA ADR (GRFS)
2/15/2012 - 6/30/2012
42.01%
Cirrus Logic (CRUS)
2/15/2012 - 6/30/2012
41.4%
Marriot Vacations Worldwide (VAC)
2/15/2012 - 6/30/2012
38.06%
Addus HomeCare (ADUS)
2/15/2012 - 6/30/2012
37.92%
Pilgrims Pride (PPC)
2/15/2012 - 6/30/2012
37.24%
Louisiana-Pacific (LPX)
2/15/2012 - 6/30/2012
35.32%
Federal Signal (FSS)
2/15/2012 - 6/30/2012
30.65%
Delek US Energy (DK)
2/15/2012 - 6/30/2012
29.83%
Saia (SAIA)
2/15/2012 - 6/30/2012
29.76%
M/I Homes (MHO)
2/15/2012 - 6/30/2012
29.25%
Vera Therapeutics (VERA)
2/15/2012 - 6/30/2012
28.53%
LivaNova (LIVN)
2/15/2012 - 6/30/2012
28.51%
UMB Financial (UMBF)
2/15/2012 - 6/30/2012
25.88%
AZZ (AZZ)
2/15/2012 - 6/30/2012
25.09%
Flowers Foods (FLO)
2/15/2012 - 6/30/2012
24.92%
Cadence Bancorp (CADE)
2/15/2012 - 6/30/2012
23.56%
Texas Capital Bancshares (TCBI)
2/15/2012 - 6/30/2012
23.29%
Mid-cap stocks are treated as having a market cap between $2B and $10B.