Structure Therapeutics Inc American Depositary Shares (GPCR) had the highest return in September 2023 by a small-cap US stock or small-cap US stock, returning 76.6%.

ASSET	MONTH	% RETURN
Structure Therapeutics Inc American Depositary Shares (GPCR)	September 2023	76.6%
Tango Therapeutics (TNGX)	September 2023	73.77%
LifeMD (LFMD)	September 2023	54.7%
Getty Images (GETY)	September 2023	46.17%
Helius Medical Technologies Inc Class A (HSDT)	September 2023	41.43%
Biohaven Pharmaceutical (BHVN)	September 2023	41.21%
Matrix Service (MTRX)	September 2023	40.14%
Aspen Aerogels (ASPN)	September 2023	39.16%
Wave Life Sciences (WVE)	September 2023	31.58%
Natural Gas Services (NGS)	September 2023	31.41%
Hallador Energy (HNRG)	September 2023	31.33%
Rocket Pharmaceuticals (RCKT)	September 2023	29.52%
Immunome (IMNM)	September 2023	29.06%
High Tide (HITI)	September 2023	28.47%
KNOT Offshore Partners (KNOP)	September 2023	28.14%
MillerKnoll (MLKN)	September 2023	27.48%
Oncology Institute (TOI)	September 2023	26.13%
G-III Apparel (GIII)	September 2023	25.1%
IperionX Limited American Depositary Share (IPX)	September 2023	24.78%
Canopy Growth (CGC)	September 2023	24.27%
American Resources Corp Class A (AREC)	September 2023	23.7%
Groupon (GRPN)	September 2023	23.65%
IsoEnergy (ISOU)	September 2023	22.79%
Heritage Insurance Hldgs (HRTG)	September 2023	22.68%
Steelcase (SCS)	September 2023	22.48%

Small-cap stocks are treated as having a market cap between $300M and $2B.