P3 Health Partners (PIII) had the highest return on May 15 by a small-cap US stock, returning 116.5%.

ASSET	DATE	% RETURN
P3 Health Partners (PIII)	5/15/2026	116.49%
Hyliion (HYLN)	5/15/2026	33.81%
SolarEdge Technologies (SEDG)	5/15/2026	27.66%
RoboStrategy, Inc Common Stock (BOT)	5/15/2026	24.3%
Sweetgreen (SG)	5/15/2026	18.27%
Satellogic V (SATL)	5/15/2026	18.13%
Air Global PLC Ordinary Shares (AIIR)	5/15/2026	18.11%
Enhanced (ENHA)	5/15/2026	16.91%
Zhong Yang Financial Group Limited Ordinary Shares (TOP)	5/15/2026	16.17%
Babcock & Wilcox Enterprises (BW)	5/15/2026	15.67%
NL Industries (NL)	5/15/2026	14.78%
Newsmax (NMAX)	5/15/2026	14.47%
Shoals Technologies (SHLS)	5/15/2026	13.58%
Ballard Power Systems (BLDP)	5/15/2026	13.52%
Spire Global (SPIR)	5/15/2026	13.05%
Innodata (INOD)	5/15/2026	11.74%
Sable Offshore (SOC)	5/15/2026	10.2%
ESGL (OIO)	5/15/2026	8.62%
Suncrete, Inc Class A Common Stock (RMIX)	5/15/2026	8.55%
Kosmos Energy (KOS)	5/15/2026	8.39%
Boost Run Inc Class A Common Stock (BRUN)	5/15/2026	8.23%
Array Technologies (ARRY)	5/15/2026	8.07%
SimilarWeb (SMWB)	5/15/2026	7.85%
Polestar Automotive Holding UK PLC Class A ADS (PSNY)	5/15/2026	7.74%
SES AI (SES)	5/15/2026	7.62%

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