Newsmax (NMAX) had the highest return in March 2025 by a small-cap US stock, returning 496.5%.

ASSET	MONTH	% RETURN
Newsmax (NMAX)	March 2025	496.5%
IsoEnergy (ISOU)	March 2025	322.5%
Aeva Technologies, Inc Common Stock (AEVA)	March 2025	93.37%
Northern Dynasty Minerals (NAK)	March 2025	86.99%
Amber International (AMBR)	March 2025	82.9%
DBV Technologies (DBVT)	March 2025	68.4%
QuantaSing Group Limited American Depositary Shares (QSG)	March 2025	67.5%
Groupon (GRPN)	March 2025	66.11%
OPTIMIZERx (OPRX)	March 2025	64.02%
Claros Mortgage Trust (CMTG)	March 2025	61.47%
Niu Technologies (NIU)	March 2025	60%
United States Antimony (UAMY)	March 2025	54.93%
Vasta Platform (VSTA)	March 2025	48.52%
ProAssurance (PRA)	March 2025	48.07%
Collective Mining (CNL)	March 2025	44.35%
Avino Silver & Gold Mines (ASM)	March 2025	43.75%
Jiayin (JFIN)	March 2025	42.98%
Xeris Pharmaceuticals (XERS)	March 2025	42.6%
X Financial Class A (XYF)	March 2025	41.36%
Hycroft Mining (HYMC)	March 2025	39.06%
Trevi Therapeutics (TRVI)	March 2025	38.85%
agilon health (AGL)	March 2025	37.03%
Oncology Institute (TOI)	March 2025	34.04%
Yalla Group (YALA)	March 2025	32.49%
Alumis (ALMS)	March 2025	30.64%

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