best performing stocks mid cap stocks between january 1 1999 to december 31 1999

InterDigital (IDCC) had the highest return between January 1, 1999 and December 31, 1999 by a mid-cap US stock or mid-cap US stock, returning 1,438.5%.

ASSET DATE % RETURN
InterDigital (IDCC)
1/1/1999 - 12/31/1999
1,438.46%
Viavi Solutions (VIAV)
1/1/1999 - 12/31/1999
794.63%
Stonex (SNEX)
1/1/1999 - 12/31/1999
514.95%
Qorvo (QRVO)
1/1/1999 - 12/31/1999
473.29%
ViaSat (VSAT)
1/1/1999 - 12/31/1999
380.72%
Vicor (VICR)
1/1/1999 - 12/31/1999
337.84%
Diodes (DIOD)
1/1/1999 - 12/31/1999
319.53%
Universal Display (OLED)
1/1/1999 - 12/31/1999
318.75%
BlackBerry (BB)
1/1/1999 - 12/31/1999
299.99%
SK Telecom Co Ltd ADR (SKM)
1/1/1999 - 12/31/1999
298.54%
Grupo Simec SAB de CV ADR (SIM)
1/1/1999 - 12/31/1999
289.32%
Innodata (INOD)
1/1/1999 - 12/31/1999
277.26%
Patterson-UTI Energy (PTEN)
1/1/1999 - 12/31/1999
215.15%
Gerdau SA ADR (GGB)
1/1/1999 - 12/31/1999
214.48%
Sharplink Gaming (SBET)
1/1/1999 - 12/31/1999
203.23%
Semtech (SMTC)
1/1/1999 - 12/31/1999
190.59%
Telephone and Data Systems (TDS)
1/1/1999 - 12/31/1999
186.17%
Euronet Worldwide (EEFT)
1/1/1999 - 12/31/1999
175%
WPP PLC ADR (WPP)
1/1/1999 - 12/31/1999
174.82%
Descartes Systems (DSGX)
1/1/1999 - 12/31/1999
168.75%
Trex (TREX)
1/1/1999 - 12/31/1999
167.5%
American Superconductor (AMSC)
1/1/1999 - 12/31/1999
165.09%
Array Digital Infrastructure (AD)
1/1/1999 - 12/31/1999
163.03%
United States Cellular (USM)
1/1/1999 - 12/31/1999
163%
Bio-Techne (TECH)
1/1/1999 - 12/31/1999
160.66%
Mid-cap stocks are treated as having a market cap between $2B and $10B.