Bitdeer Technologies Group Class A Ordinary Shares (BTDR) had the highest return in December 2023 by a mid-cap US stock, returning 113.4%.

ASSET	MONTH	% RETURN
Bitdeer Technologies Group Class A Ordinary Shares (BTDR)	December 2023	113.42%
Sezzle (SEZL)	December 2023	105.41%
Terawulf (WULF)	December 2023	101.68%
Bitfarms (KEEL)	December 2023	97.96%
CleanSpark (CLSK)	December 2023	86.63%
Edgewise Therapeutics (EWTX)	December 2023	81.73%
Monte Rosa Therapeutics (GLUE)	December 2023	80.51%
Maase (MAAS)	December 2023	75.78%
Arcutis Biotherapeutics (ARQT)	December 2023	74.59%
Compass (COMP)	December 2023	71.69%
Liquidia Technologies (LQDA)	December 2023	68.02%
CommScope (VISN)	December 2023	67.86%
Nurix Therapeutics (NRIX)	December 2023	66.18%
Pharvaris (PHVS)	December 2023	63.08%
Compania de Minas Buenaventura SAA ADR (BVN)	December 2023	60.25%
Twist Bioscience (TWST)	December 2023	54.74%
Upstart Holdings (UPST)	December 2023	54.31%
Sunrun (RUN)	December 2023	54.08%
Century Aluminum (CENX)	December 2023	53.28%
Opendoor Technologies (OPEN)	December 2023	50.84%
Viking Therapeutics (VKTX)	December 2023	50.08%
Scholar Rock (SRRK)	December 2023	49.44%
Ouster, Inc Common Stock (OUST)	December 2023	48.64%
Applied Opt (AAOI)	December 2023	46.47%
Xometry (XMTR)	December 2023	45.68%

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