SoundHound AI (SOUN) had the best day in June 2022 by a mid-cap US stock on June 17, 2022, returning 49.8%.

ASSET	DATE	% RETURN
SoundHound AI (SOUN)	6/17/2022	49.81%
Miniso Group Holding (MNSO)	6/8/2022	25.45%
Scholar Rock (SRRK)	6/7/2022	23.26%
Belite Bio Inc ADR (BLTE)	6/13/2022	21.01%
TG Therapeutics (TGTX)	6/8/2022	20.43%
Akero Therapeutics (AKRO)	6/17/2022	19.33%
Arcellx (ACLX)	6/10/2022	19.05%
BridgeBio Pharma (BBIO)	6/7/2022	18.91%
Arcellx (ACLX)	6/6/2022	18.72%
Regencell Bioscience (RGC)	6/1/2022	17.92%
Immunitybio (IBRX)	6/7/2022	17.88%
Alvotech (ALVO)	6/16/2022	17.79%
Gitlab (GTLB)	6/2/2022	17.17%
Polestar Automotive Holding UK PLC Class C-1 ADS (ADW) (PSNYW)	6/22/2022	16.91%
HUTCHMED DRC (HCM)	6/8/2022	16.82%
Scholar Rock (SRRK)	6/22/2022	16.67%
Centrus Energy (LEU)	6/7/2022	16.6%
Uranium Energy (UEC)	6/7/2022	16.58%
Scholar Rock (SRRK)	6/23/2022	16.45%
Miniso Group Holding (MNSO)	6/17/2022	16.39%
Belite Bio Inc ADR (BLTE)	6/30/2022	16.32%
New Oriental Education & Technology (EDU)	6/14/2022	16.1%
Zai Lab (ZLAB)	6/17/2022	16.07%
Uranium Energy (UEC)	6/2/2022	16.07%
Rhythm Pharmaceuticals (RYTM)	6/22/2022	16.06%

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