what is the most performance mid cap stock between august 1 2014 and april 1 2015

Ambarella (AMBA) had the highest return between August 1, 2014 and April 1, 2015 by a mid-cap US stock, returning 160.3%.

ASSET DATE % RETURN
Ambarella (AMBA)
8/1/2014 - 4/1/2015
160.27%
Corcept Therapeutics (CORT)
8/1/2014 - 4/1/2015
134.44%
PTC Therapeutics (PTCT)
8/1/2014 - 4/1/2015
131.98%
Installed Building Products (IBP)
8/1/2014 - 4/1/2015
101.99%
Ionis Pharmaceuticals (IONS)
8/1/2014 - 4/1/2015
101.98%
TG Therapeutics (TGTX)
8/1/2014 - 4/1/2015
100%
Amneal Pharmaceuticals, Inc Class A Common Stock (AMRX)
8/1/2014 - 4/1/2015
98.38%
Qualys (QLYS)
8/1/2014 - 4/1/2015
96.04%
Vicor (VICR)
8/1/2014 - 4/1/2015
94.56%
OneMain (OMF)
8/1/2014 - 4/1/2015
94.19%
Trex (TREX)
8/1/2014 - 4/1/2015
92.1%
Catalyst Pharmaceuticals (CPRX)
8/1/2014 - 4/1/2015
88.7%
MACOM Technology Solutions (MTSI)
8/1/2014 - 4/1/2015
88.03%
Advanced Drainage Systems (WMS)
8/1/2014 - 4/1/2015
87.65%
Globant (GLOB)
8/1/2014 - 4/1/2015
87.35%
Transportadora de Gas del Sur SA ADR (TGS)
8/1/2014 - 4/1/2015
83.68%
Qorvo (QRVO)
8/1/2014 - 4/1/2015
76.05%
Insperity (NSP)
8/1/2014 - 4/1/2015
75.65%
Tower Semiconductor (TSEM)
8/1/2014 - 4/1/2015
73.83%
Pampa Energia SA ADR (PAM)
8/1/2014 - 4/1/2015
73.27%
Credit Acceptance (CACC)
8/1/2014 - 4/1/2015
71.15%
Dycom Industries (DY)
8/1/2014 - 4/1/2015
71.06%
Xenon Pharmaceuticals (XENE)
8/1/2014 - 4/1/2015
70.96%
RadNet (RDNT)
8/1/2014 - 4/1/2015
69.53%
Coca-Cola Consolidated (COKE)
8/1/2014 - 4/1/2015
67.78%
Mid-cap stocks are treated as having a market cap between $2B and $10B.