best performing mid stock in july 1 2017 to sep 30 2017

Quantum Computing  (QUBT) had the highest return between July 1, 2017 and September 30, 2017 by a mid-cap US stock, returning 200%.

ASSETDATE% RETURN
Quantum Computing  (QUBT)
7/1/2017 - 9/30/2017
200%
Almonty Industries Inc Common Shares (ALM)
7/1/2017 - 9/30/2017
172.21%
Skyline (SKY)
7/1/2017 - 9/30/2017
101.5%
Calumet Specialty Products Partners (CLMT)
7/1/2017 - 9/30/2017
96.47%
Aya Gold & Silver Inc Common Shares (AYA)
7/1/2017 - 9/30/2017
86.67%
Viking Therapeutics (VKTX)
7/1/2017 - 9/30/2017
76.85%
Enphase Energy (ENPH)
7/1/2017 - 9/30/2017
74.71%
Penguin Solutions (PENG)
7/1/2017 - 9/30/2017
65.51%
TAL Education (TAL)
7/1/2017 - 9/30/2017
64.57%
Corcept Therapeutics (CORT)
7/1/2017 - 9/30/2017
63.14%
Ultra Clean (UCTT)
7/1/2017 - 9/30/2017
63.13%
ArcBest (ARCB)
7/1/2017 - 9/30/2017
61.72%
Talos Energy (TALO)
7/1/2017 - 9/30/2017
56.24%
Protagonist Therapeutics (PTGX)
7/1/2017 - 9/30/2017
54.46%
Solaris Energy Infrastructure (SEI)
7/1/2017 - 9/30/2017
52.1%
Cohu (COHU)
7/1/2017 - 9/30/2017
51.78%
Constellium (CSTM)
7/1/2017 - 9/30/2017
49.64%
Amicus Therapeutics (FOLD)
7/1/2017 - 9/30/2017
49.16%
RadNet (RDNT)
7/1/2017 - 9/30/2017
49.03%
Americas Silver (USAS)
7/1/2017 - 9/30/2017
48.56%
Chefs Warehouse (CHEF)
7/1/2017 - 9/30/2017
48.46%
Taseko Mines (TGB)
7/1/2017 - 9/30/2017
48%
JOYY (JOYY)
7/1/2017 - 9/30/2017
47.61%
Appfolio (APPF)
7/1/2017 - 9/30/2017
46.19%
AeroVironment (AVAV)
7/1/2017 - 9/30/2017
44.51%
Mid-cap stocks are treated as having a market cap between $2B and $10B.