what is the most performance mid cap stock between january 1 2005 and january 1 2021

Sitio Royalties (STR) had the highest return between January 1, 2005 and January 1, 2021 by a mid-cap US stock, returning 8,482,400%.

ASSET DATE % RETURN
Sitio Royalties (STR)
1/1/2005 - 1/1/2021
8,482,400%
Repligen (RGEN)
1/1/2005 - 1/1/2021
6,507.93%
Boston Beer (SAM)
1/1/2005 - 1/1/2021
4,591.71%
Vipshop (VIPS)
1/1/2005 - 1/1/2021
4,584.94%
MarketAxess (MKTX)
1/1/2005 - 1/1/2021
3,895.84%
New Oriental Education & Technology (EDU)
1/1/2005 - 1/1/2021
3,497.5%
Quidel (QDEL)
1/1/2005 - 1/1/2021
3,493%
Pegasystems (PEGA)
1/1/2005 - 1/1/2021
3,222.45%
TAL Education (TAL)
1/1/2005 - 1/1/2021
3,157.86%
Northern Oil & Gas (NOG)
1/1/2005 - 1/1/2021
3,085.51%
Exponent (EXPO)
1/1/2005 - 1/1/2021
2,783.21%
NewMarket (NEU)
1/1/2005 - 1/1/2021
2,653.11%
Generac (GNRC)
1/1/2005 - 1/1/2021
2,554.8%
National Beverage (FIZZ)
1/1/2005 - 1/1/2021
2,442.75%
Universal Display (OLED)
1/1/2005 - 1/1/2021
2,412.31%
AAON (AAON)
1/1/2005 - 1/1/2021
2,321.95%
IAC (IAC)
1/1/2005 - 1/1/2021
2,248.5%
Enphase Energy (ENPH)
1/1/2005 - 1/1/2021
2,239.6%
Ringcentral (RNG)
1/1/2005 - 1/1/2021
2,096.93%
Five9 (FIVN)
1/1/2005 - 1/1/2021
2,093.71%
Match (MTCH)
1/1/2005 - 1/1/2021
1,977.39%
Ensign (ENSG)
1/1/2005 - 1/1/2021
1,945.15%
Halozyme Therapeutics (HALO)
1/1/2005 - 1/1/2021
1,933.81%
Nova (NVMI)
1/1/2005 - 1/1/2021
1,917.14%
Insperity (NSP)
1/1/2005 - 1/1/2021
1,809.32%
Mid-cap stocks are treated as having a market cap between $2B and $10B.