Regencell Bioscience (RGC) had the highest return last month by a small-cap US stock, returning 593%.

ASSET	MONTH	% RETURN
Regencell Bioscience (RGC)	March 2025	593.04%
Park Ha Biological Technology (PHH)	March 2025	126.97%
Schnitzer Steel Industries (RDUS)	March 2025	106.58%
Aeva Technologies, Inc Common Stock (AEVA)	March 2025	93.37%
Northern Dynasty Minerals (NAK)	March 2025	86.99%
Marblegate Acquisition (GATE)	March 2025	79.09%
Mineralys Therapeutics, Inc Common Stock (MLYS)	March 2025	73.17%
QuantaSing Group Limited American Depositary Shares (QSG)	March 2025	67.5%
Groupon (GRPN)	March 2025	66.11%
Chimerix (CMRX)	March 2025	64.6%
Claros Mortgage Trust (CMTG)	March 2025	61.47%
JBDI Holdings Limited Ordinary Shares (JBDI)	March 2025	58.55%
ProAssurance (PRA)	March 2025	48.07%
IHS (IHS)	March 2025	43.8%
Jiayin (JFIN)	March 2025	42.98%
Xeris Pharmaceuticals (XERS)	March 2025	42.6%
X Financial Class A (XYF)	March 2025	41.36%
Checkpoint Therapeutics (CKPT)	March 2025	41.26%
Redfin (RDFN)	March 2025	39.33%
Trevi Therapeutics (TRVI)	March 2025	38.85%
agilon health (AGL)	March 2025	37.03%
Chromadex (CDXC)	March 2025	36.99%
Fortuna Silver Mines (FSM)	March 2025	36.16%
DRDGOLD Limited ADR (DRD)	March 2025	35.94%
Yalla Group (YALA)	March 2025	32.49%

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