Hut 8 Corp Common Stock (HUT) had the highest return in January 2023 by a mid-cap US stock, returning 126.2%.

ASSET	MONTH	% RETURN
Hut 8 Corp Common Stock (HUT)	January 2023	126.21%
Immunome (IMNM)	January 2023	120.42%
Praxis Precision Medicines (PRAX)	January 2023	118.42%
Cipher Mining (CIFR)	January 2023	107.61%
Sotera Health (SHC)	January 2023	104.27%
Opendoor Technologies (OPEN)	January 2023	85.59%
Riot Blockchain (RIOT)	January 2023	79.66%
Compass (COMP)	January 2023	71.06%
Aehr Test Systems (AEHR)	January 2023	70.19%
Lucid (LCID)	January 2023	67.72%
Applied Digital (APLD)	January 2023	64.02%
Aurinia Pharmaceuticals (AUPH)	January 2023	60.46%
Peloton Interactive (PTON)	January 2023	58.26%
Oscar Health (OSCR)	January 2023	53.6%
Life Time (LTH)	January 2023	53.51%
CleanSpark (CLSK)	January 2023	50.95%
Definium Therapeutics (DFTX)	January 2023	50.22%
Transocean (RIG)	January 2023	49.78%
Atour Lifestyle Holdings Limited American Depositary Shares (ATAT)	January 2023	48.54%
Archer Aviation (ACHR)	January 2023	47.21%
Kymera Therapeutics (KYMR)	January 2023	46.65%
Scotts Miracle-Gro (SMG)	January 2023	46.19%
QuantumScape Corporation Class A Common Stock (QS)	January 2023	45.47%
LYFT (LYFT)	January 2023	43.81%
Astronics (ATRO)	January 2023	43.06%

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