Intuitive Machines (LUNR) had the highest return in February 2023 by a mid-cap US stock, returning 99%.

ASSET	MONTH	% RETURN
Intuitive Machines (LUNR)	February 2023	99.01%
Structure Therapeutics Inc American Depositary Shares (GPCR)	February 2023	70.4%
SoundHound AI (SOUN)	February 2023	48.68%
Dianthus Therapeutics (DNTH)	February 2023	45.46%
Oscar Health (OSCR)	February 2023	44.65%
Teekay Tankers (TNK)	February 2023	44.2%
VEON (VEON)	February 2023	42%
DHT (DHT)	February 2023	39.02%
Intapp (INTA)	February 2023	36.62%
Hims Hers Health (HIMS)	February 2023	36.11%
Torm PLC Class A (TRMD)	February 2023	35.45%
Fastly, Inc Class A Common Stock (FSLY)	February 2023	34.2%
Frontline (FRO)	February 2023	32.96%
International Seaways (INSW)	February 2023	31.56%
ELF Beauty (ELF)	February 2023	30.25%
Navitas Semiconductor (NVTS)	February 2023	29.28%
Lionsgate Studios Holding Corp (to be renamed Lionsgate Studios Corp) (LION)	February 2023	28.52%
Lantheus (LNTH)	February 2023	28.38%
TransMedics (TMDX)	February 2023	27.83%
Cipher Mining (CIFR)	February 2023	26.67%
Viking Therapeutics (VKTX)	February 2023	24.97%
Scorpio Tankers (STNG)	February 2023	24.94%
Andersons (ANDE)	February 2023	24.64%
Apellis Pharmaceuticals (APLS)	February 2023	24.46%
Vita Coco (COCO)	February 2023	24.34%

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