Embotelladora Andina (AKO.B) had the highest return on December 27, 2019 by a mid-cap US stock, returning 7.5%.

ASSET	DATE	% RETURN
Embotelladora Andina (AKO.B)	12/27/2019	7.49%
Indivior PLC Ordinary Shares (INDV)	12/27/2019	5%
Alliance Resource Partners (ARLP)	12/27/2019	4.34%
10X Genomics (TXG)	12/27/2019	4.28%
Perpetua Resources (PPTA)	12/27/2019	3.51%
Genworth Financial (GNW)	12/27/2019	3.32%
CleanSpark (CLSK)	12/27/2019	3.06%
Sprott (SII)	12/27/2019	2.74%
Mirum Pharmaceuticals (MIRM)	12/27/2019	2.57%
NexGen Energy (NXE)	12/27/2019	2.34%
Burford Capital (BUR)	12/27/2019	2.2%
Calumet Specialty Products Partners (CLMT)	12/27/2019	2.16%
Uranium Energy (UEC)	12/27/2019	2.14%
Kinetik (KNTK)	12/27/2019	2.05%
Lumen Technologies (LUMN)	12/27/2019	2.05%
Signet Jewelers (SIG)	12/27/2019	2.04%
Celcuity LLC (CELC)	12/27/2019	1.96%
United States Lime & Minerals (USLM)	12/27/2019	1.92%
Alpha Metallurgical Resources (AMR)	12/27/2019	1.91%
Centerra Gold (CGAU)	12/27/2019	1.88%
PennyMac Finl Svcs (PFSI)	12/27/2019	1.77%
Aris Mining (ARMN)	12/27/2019	1.69%
Liberty Global PLC Class C (LBTYK)	12/27/2019	1.65%
HUTCHMED DRC (HCM)	12/27/2019	1.59%
Americas Silver (USAS)	12/27/2019	1.55%

Mid-cap stocks are treated as having a market cap between $2B and $10B.