Applied Digital (APLD) had the highest return in Q2 2023 by a mid-cap US stock, returning 311.9%.

ASSET	QUARTER	% RETURN
Applied Digital (APLD)	Q2 2023	311.89%
Applied Opt (AAOI)	Q2 2023	178.5%
Olema Pharmaceuticals (OLMA)	Q2 2023	157.26%
Opendoor Technologies (OPEN)	Q2 2023	132.37%
Upstart Holdings (UPST)	Q2 2023	128.09%
Amneal Pharmaceuticals, Inc Class A Common Stock (AMRX)	Q2 2023	119.86%
Aurora Innovation (AUR)	Q2 2023	110%
Disc Medicine (IRON)	Q2 2023	109.34%
Vera Therapeutics (VERA)	Q2 2023	106.56%
Soleno Therapeutics (SLNO)	Q2 2023	104.29%
Inter & Co Inc Class A Common Shares (INTR)	Q2 2023	87.43%
SkyWest (SKYW)	Q2 2023	85.09%
Hut 8 Corp Common Stock (HUT)	Q2 2023	84.36%
Terawulf (WULF)	Q2 2023	84.21%
Avadel Pharmaceuticals (AVDL)	Q2 2023	83.72%
TMC the metals (TMC)	Q2 2023	83.15%
Structure Therapeutics Inc American Depositary Shares (GPCR)	Q2 2023	78.64%
Ideaya Biosciences (IDYA)	Q2 2023	71.16%
Eos Energy Enterprises (EOSE)	Q2 2023	65.65%
Rigetti Computing (RGTI)	Q2 2023	65.49%
TG Therapeutics (TGTX)	Q2 2023	65.49%
SoundHound AI (SOUN)	Q2 2023	64.86%
Norwegian Cruise Line (NCLH)	Q2 2023	63.68%
Centessa Pharmaceuticals PLC ADR (CNTA)	Q2 2023	63.32%
Customers Bancorp (CUBI)	Q2 2023	62.86%

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