QMMM Holdings Limited Ordinary Shares (QMMM) had the best day since June 9, 2025 by a mid-cap US stock on September 9, returning 1,284.6%.

ASSET	DATE	% RETURN
QMMM Holdings Limited Ordinary Shares (QMMM)	9/9/2025	1,284.62%
Regencell Bioscience (RGC)	6/16/2025	129.01%
Regencell Bioscience (RGC)	7/3/2025	109%
Structure Therapeutics Inc American Depositary Shares (GPCR)	12/8/2025	54.38%
QMMM Holdings Limited Ordinary Shares (QMMM)	9/8/2025	48.29%
Digitalbridge (DBRG)	12/5/2025	45.57%
Wave Life Sciences (WVE)	12/8/2025	44.41%
Nuvation Bio (NUVB)	11/19/2025	43.29%
Opendoor Technologies (OPEN)	8/22/2025	39.94%
Opendoor Technologies (OPEN)	9/11/2025	38.24%
QMMM Holdings Limited Ordinary Shares (QMMM)	9/10/2025	35.19%
Quantumscape (QS)	6/26/2025	34.45%
QMMM Holdings Limited Ordinary Shares (QMMM)	9/2/2025	34.43%
Paramount Skydance Corporation Class B Common Stock (PSKY)	8/13/2025	33.93%
Sunrun (RUN)	8/15/2025	32.82%
Opendoor Technologies (OPEN)	8/14/2025	32.75%
Liberty Oilfield Services (LBRT)	10/17/2025	32.18%
Olema Pharmaceuticals (OLMA)	9/5/2025	30.87%
ViaSat (VSAT)	8/6/2025	29.46%
Protagonist Therapeutics (PTGX)	10/10/2025	29.1%
Ondas (ONDS)	11/24/2025	28.52%
American Bitcoin (ABTC)	8/28/2025	28.36%
Quantum Computing (QUBT)	9/19/2025	27.93%
Terns Pharmaceuticals (TERN)	12/8/2025	27.59%
Mineralys Therapeutics, Inc Common Stock (MLYS)	9/2/2025	27.47%

Mid-cap stocks are treated as having a market cap between $2B and $10B.