Moderna (MRNA) had the highest return last month by a large-cap US stock, returning 155.5%.

ASSET	MONTH	% RETURN
Moderna (MRNA)	August 2026	155.51%
Atlassian (TEAM)	August 2026	84.8%
Circle Internet (CRCL)	August 2026	62%
Eldorado Gold (EGO)	August 2026	47.11%
Palantir Technologies (PLTR)	August 2026	47.1%
Tempus AI, Inc Class A Common Stock (TEM)	August 2026	45.14%
IAMGold (IAG)	August 2026	44.73%
MicroStrategy (MSTR)	August 2026	44.48%
Equinox Gold (EQX)	August 2026	44.45%
Hecla Mining (HL)	August 2026	42.57%
Chime Financial, Inc Class A Common Stock (CHYM)	August 2026	41.92%
AngloGold Ashanti (AU)	August 2026	41.48%
Coeur Mining (CDE)	August 2026	40.98%
Agnico Eagle Mines (AEM)	August 2026	40.39%
Gold Fields Ltd ADR (GFI)	August 2026	40.13%
Wheaton Precious Metals (WPM)	August 2026	38.18%
Paramount Skydance Corporation Class B Common Stock (PSKY)	August 2026	36.38%
Salesforce (CRM)	August 2026	36.27%
Veeva Systems Inc Class A (VEEV)	August 2026	36.05%
Sandisk (SNDK)	August 2026	35.08%
SpaceX (SPCX)	August 2026	35.05%
Newmont Goldcorp (NEM)	August 2026	34.9%
Kinross Gold (KGC)	August 2026	33.8%
Lumentum (LITE)	August 2026	33.42%
Super Micro Computer (SMCI)	August 2026	33.14%

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