Western Alliance Bancorporation (WAL) had the best day in Q1 2023 by a mid-cap US stock on March 13, 2023, returning 102.6%.

ASSET	DATE	% RETURN
Western Alliance Bancorporation (WAL)	3/13/2023	102.64%
Redwire (RDW)	2/15/2023	49.41%
SoundHound AI (SOUN)	2/3/2023	48.42%
SoundHound AI (SOUN)	3/31/2023	39.39%
Strive (ASST)	2/27/2023	36.42%
Protagonist Therapeutics (PTGX)	3/7/2023	36.06%
Immunome (IMNM)	1/3/2023	35.83%
Innodata (INOD)	2/1/2023	33.78%
Cipher Mining (CIFR)	2/2/2023	33.33%
D-Wave Quantum Inc Common Stock (QBTS)	2/3/2023	29.51%
Cipher Mining (CIFR)	3/13/2023	28.17%
Praxis Precision Medicines (PRAX)	1/17/2023	26.28%
SoundHound AI (SOUN)	2/8/2023	25.82%
NewAmsterdam Pharma Company NV Ordinary Shares (NAMS)	1/27/2023	25.81%
Viking Therapeutics (VKTX)	3/28/2023	25.43%
D-Wave Quantum Inc Common Stock (QBTS)	3/31/2023	25.28%
Astronics (ATRO)	1/20/2023	24.77%
Atour Lifestyle Holdings Limited American Depositary Shares (ATAT)	1/13/2023	24.69%
Rigetti Computing (RGTI)	2/8/2023	24.11%
Aveanna Healthcare (AVAH)	3/13/2023	24%
Western Alliance Bancorporation (WAL)	3/16/2023	23.07%
Aveanna Healthcare (AVAH)	1/13/2023	22.55%
SoundHound AI (SOUN)	2/14/2023	22.4%
Immunome (IMNM)	1/5/2023	22.34%
SoundHound AI (SOUN)	3/21/2023	22.22%

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