Terawulf (WULF) had the highest return in April 2023 by a mid-cap US stock, returning 87.4%.

ASSET	MONTH	% RETURN
Terawulf (WULF)	April 2023	87.37%
TG Therapeutics (TGTX)	April 2023	65.42%
Soleno Therapeutics (SLNO)	April 2023	60.48%
Disc Medicine (IRON)	April 2023	54.31%
Immunitybio (IBRX)	April 2023	52.17%
Legend Biotech (LEGN)	April 2023	45.76%
CleanSpark (CLSK)	April 2023	44.81%
Applied Digital (APLD)	April 2023	40.97%
Arrowhead Pharmaceuticals (ARWR)	April 2023	39.52%
Arcellx (ACLX)	April 2023	39.3%
Amneal Pharmaceuticals, Inc Class A Common Stock (AMRX)	April 2023	36.88%
Nuvalent (NUVL)	April 2023	36.06%
Ideaya Biosciences (IDYA)	April 2023	32.99%
Life Time (LTH)	April 2023	31.5%
StoneCo (STNE)	April 2023	29.68%
SkyWest (SKYW)	April 2023	28.64%
Madrigal Pharmaceuticals (MDGL)	April 2023	27.06%
Viking Therapeutics (VKTX)	April 2023	26.66%
Arcutis Biotherapeutics (ARQT)	April 2023	25.36%
Centessa Pharmaceuticals PLC ADR (CNTA)	April 2023	24.54%
Crinetics Pharmaceuticals (CRNX)	April 2023	22.28%
Riot Blockchain (RIOT)	April 2023	21.92%
Xp (XP)	April 2023	21.62%
Energy of Minas Gerais Co DRC (CIG.C)	April 2023	20.75%
SLM (SLM)	April 2023	20.45%

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