what is the most performance mid cap stock between may 13 2017 and september 30 2017

Leonardo DRS, Inc Common Stock (DRS) had the highest return between May 13, 2017 and September 30, 2017 by a mid-cap US stock, returning 196.5%.

ASSETDATE% RETURN
Leonardo DRS, Inc Common Stock (DRS)
5/13/2017 - 9/30/2017
196.53%
Arrowhead Pharmaceuticals (ARWR)
5/13/2017 - 9/30/2017
151.74%
Appian (APPN)
5/13/2017 - 9/30/2017
137.17%
Amicus Therapeutics (FOLD)
5/13/2017 - 9/30/2017
101.34%
Skyline (SKY)
5/13/2017 - 9/30/2017
95%
Enphase Energy (ENPH)
5/13/2017 - 9/30/2017
85.37%
Corcept Therapeutics (CORT)
5/13/2017 - 9/30/2017
81.73%
RadNet (RDNT)
5/13/2017 - 9/30/2017
76.34%
Appfolio (APPF)
5/13/2017 - 9/30/2017
70.04%
Protagonist Therapeutics (PTGX)
5/13/2017 - 9/30/2017
66.38%
JOYY (JOYY)
5/13/2017 - 9/30/2017
60.85%
Autohome (ATHM)
5/13/2017 - 9/30/2017
60.73%
TAL Education (TAL)
5/13/2017 - 9/30/2017
60.55%
Option Care Health (OPCH)
5/13/2017 - 9/30/2017
58.96%
Constellium (CSTM)
5/13/2017 - 9/30/2017
58.91%
Avis Budget (CAR)
5/13/2017 - 9/30/2017
56.24%
Weibo (WB)
5/13/2017 - 9/30/2017
55.2%
Viking Therapeutics (VKTX)
5/13/2017 - 9/30/2017
54.03%
PTC Therapeutics (PTCT)
5/13/2017 - 9/30/2017
53.57%
Aris Mining (ARMN)
5/13/2017 - 9/30/2017
53.07%
Modine Manufacturing (MOD)
5/13/2017 - 9/30/2017
52.17%
National Beverage (FIZZ)
5/13/2017 - 9/30/2017
50.47%
Quantum Computing  (QUBT)
5/13/2017 - 9/30/2017
50%
Etsy (ETSY)
5/13/2017 - 9/30/2017
49.65%
iRhythm Technologies (IRTC)
5/13/2017 - 9/30/2017
48.61%
Mid-cap stocks are treated as having a market cap between $2B and $10B.