Hawaiian Electric Industries (HE) had the lowest return in August 2023 by a mid-cap US stock, returning -62.4%.

ASSET	MONTH	% RETURN
Hawaiian Electric Industries (HE)	August 2023	-62.45%
Upstart Holdings (UPST)	August 2023	-52.1%
D-Wave Quantum (QBTS)	August 2023	-49.12%
Magnite (MGNI)	August 2023	-45%
Quantumscape (QS)	August 2023	-44.74%
DigitalOcean (DOCN)	August 2023	-44.55%
American Superconductor (AMSC)	August 2023	-42.19%
Lemonade (LMND)	August 2023	-40.15%
GeneDx (WGS)	August 2023	-40.03%
Icahn Enterprises (IEP)	August 2023	-39.03%
Recursion Pharmaceuticals (RXRX)	August 2023	-37.41%
Riot Blockchain (RIOT)	August 2023	-37.4%
Rigetti Computing (RGTI)	August 2023	-37.28%
Applied Digital (APLD)	August 2023	-35.74%
Wolverine World Wide (WWW)	August 2023	-35.72%
Peloton Interactive (PTON)	August 2023	-33.05%
Spirit Aerosystems (SPR)	August 2023	-32.12%
Lufax (LU)	August 2023	-30.06%
Hut 8 Corp Common Stock (HUT)	August 2023	-29.57%
TransMedics (TMDX)	August 2023	-29.3%
Hesai Group American Depositary Share, each ADS represents one Class B ordinary share (HSAI)	August 2023	-27.88%
Etsy (ETSY)	August 2023	-26.84%
Trump Media & Technology (DJTWW)	August 2023	-26.82%
PureCycle Technologies (PCTTW)	August 2023	-26.82%
Foot Locker (FL)	August 2023	-26.49%

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