best mid cap stocks october 1999 to december 1999

InterDigital (IDCC) had the highest return between October 1, 1999 and December 31, 1999 by a mid-cap US stock, returning 1,279.3%.

ASSET DATE % RETURN
InterDigital (IDCC)
10/1/1999 - 12/31/1999
1,279.31%
Descartes Systems (DSGX)
10/1/1999 - 12/31/1999
398.55%
Universal Display (OLED)
10/1/1999 - 12/31/1999
396.29%
SK Telecom Co Ltd ADR (SKM)
10/1/1999 - 12/31/1999
274.32%
Diodes (DIOD)
10/1/1999 - 12/31/1999
265.95%
Grupo Simec SAB de CV ADR (SIM)
10/1/1999 - 12/31/1999
208.35%
Euronet Worldwide (EEFT)
10/1/1999 - 12/31/1999
202.5%
Viavi Solutions (VIAV)
10/1/1999 - 12/31/1999
186.62%
ViaSat (VSAT)
10/1/1999 - 12/31/1999
175.17%
Onto Innovation (ONTO)
10/1/1999 - 12/31/1999
126.76%
Mercury Systems (MRCY)
10/1/1999 - 12/31/1999
105.88%
KT (KT)
10/1/1999 - 12/31/1999
100.21%
Nice Ltd ADR (NICE)
10/1/1999 - 12/31/1999
90.56%
Bausch Health Companies (BHC)
10/1/1999 - 12/31/1999
82.93%
Vicor (VICR)
10/1/1999 - 12/31/1999
82.02%
Plug Power (PLUG)
10/1/1999 - 12/31/1999
79.37%
Bio-Techne (TECH)
10/1/1999 - 12/31/1999
76.2%
Sirius XM (SIRI)
10/1/1999 - 12/31/1999
74.51%
WPP PLC ADR (WPP)
10/1/1999 - 12/31/1999
74.16%
Amkor Technology (AMKR)
10/1/1999 - 12/31/1999
72.52%
American Superconductor (AMSC)
10/1/1999 - 12/31/1999
70.99%
Alkermes (ALKS)
10/1/1999 - 12/31/1999
69.76%
Formula Systems 1985 Ltd ADR (FORTY)
10/1/1999 - 12/31/1999
67.75%
Ligand Pharmaceuticals (LGND)
10/1/1999 - 12/31/1999
66.13%
Amdocs (DOX)
10/1/1999 - 12/31/1999
64.78%
Mid-cap stocks are treated as having a market cap between $2B and $10B.