Zepp Health (ZEPP) had the highest return last month by a small-cap US stock, returning 396.7%.

ASSET	MONTH	% RETURN
Zepp Health (ZEPP)	July 2025	396.68%
ProKidney (PROK)	July 2025	377.59%
Newegg Commerce (NEGG)	July 2025	295.47%
180 Life Sciences (ATNF)	July 2025	252.69%
Mill City Ventures III (MCVT)	July 2025	207.78%
Health In Tech, Inc Class A Common Stock (HIT)	July 2025	130%
Jyong Biotech Ltd Ordinary Shares (MENS)	July 2025	104.95%
ZimVie (ZIMV)	July 2025	101.39%
Smart Digital Group Limited Ordinary Shares (SDM)	July 2025	89.4%
Kodiak Sciences (KOD)	July 2025	76.75%
Oncology Institute (TOI)	July 2025	76.44%
Gossamer Bio (GOSS)	July 2025	65.85%
Amprius Technologies (AMPX)	July 2025	64.61%
CECO Environmental (CECO)	July 2025	59.06%
Cogent Biosciences (COGT)	July 2025	59.05%
Ramaco Resources (METCB)	July 2025	59.02%
ATAI Life Sciences (ATAI)	July 2025	55.3%
Upexi (UPXI)	July 2025	55.02%
Prime Medicine, Inc Common Stock (PRME)	July 2025	53.91%
Compass Pathways (CMPS)	July 2025	53.17%
Bitfarms (BITF)	July 2025	52.91%
Betterware de MÃ©xico, SAPI de CV (BWMX)	July 2025	51.85%
HUYA (HUYA)	July 2025	51.35%
So-Young International (SY)	July 2025	50.85%
Terns Pharmaceuticals (TERN)	July 2025	49.49%

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