ViaSat (VSAT) had the highest return in August 2025 by a large-cap US stock, returning 104.5%.

ASSET	MONTH	% RETURN
ViaSat (VSAT)	August 2025	104.49%
IREN (IREN)	August 2025	73.13%
Guardant Health (GH)	August 2025	65.45%
Bloom Energy (BE)	August 2025	61.7%
Coeur Mining (CDE)	August 2025	50.11%
Madrigal Pharmaceuticals (MDGL)	August 2025	46.54%
Hecla Mining (HL)	August 2025	45.05%
Astera Labs (ALAB)	August 2025	43.96%
Arrowhead Pharmaceuticals (ARWR)	August 2025	42.13%
Hesai Group Sponsored ADR (HSAI)	August 2025	40.82%
Equinox Gold (EQX)	August 2025	40.16%
Lattice Semiconductor (LSCC)	August 2025	35.97%
Elanco Animal Health (ELAN)	August 2025	35.93%
MongoDB (MDB)	August 2025	35.67%
Affirm (AFRM)	August 2025	35.16%
Everpure (P)	August 2025	34.97%
Hut 8 Corp Common Stock (HUT)	August 2025	34.63%
Nio Inc Class A ADR (NIO)	August 2025	34.6%
IAMGold (IAG)	August 2025	34.34%
Tower Semiconductor (TSEM)	August 2025	32.9%
Gold Fields Ltd ADR (GFI)	August 2025	32.28%
Nebius (NBIS)	August 2025	31.46%
Hudbay Minerals (HBM)	August 2025	31.15%
Globalstar, Inc Common Stock (GSAT)	August 2025	29.85%
Futu (FUTU)	August 2025	28.02%

Large-cap stocks are treated as having a market cap of $10B+.