Vicor (VICR) had the highest return in October 2025 by a large-cap US stock, returning 84.7%.

ASSET	MONTH	% RETURN
Vicor (VICR)	October 2025	84.71%
Sandisk (SNDK)	October 2025	76.3%
Bloom Energy (BE)	October 2025	59.86%
Advanced Micro Devices (AMD)	October 2025	59.15%
FormFactor (FORM)	October 2025	51.84%
Applied Digital (APLD)	October 2025	51.82%
Globalstar, Inc Common Stock (GSAT)	October 2025	51.35%
Symbotic (SYM)	October 2025	50.9%
Ast Spacemobile (ASTS)	October 2025	49.97%
Guardant Health (GH)	October 2025	48.88%
YPF Sociedad Anonima (YPF)	October 2025	48.82%
ASE Industrial Holding Co Ltd ADR (ASX)	October 2025	46.21%
Nokia (NOK)	October 2025	44.54%
Hut 8 Corp Common Stock (HUT)	October 2025	43.68%
Celestica (CLS)	October 2025	42.67%
Viavi Solutions (VIAV)	October 2025	41.04%
Applied Opt (AAOI)	October 2025	40.55%
Nextracker Inc Class A Common Stock (NXT)	October 2025	36.51%
Micron Technology (MU)	October 2025	35.21%
Qnity Electronics (Q)	October 2025	34.75%
Terawulf (WULF)	October 2025	34.43%
Legence Corp Class A Common stock (LGN)	October 2025	34.27%
Teradyne (TER)	October 2025	33.73%
Twilio (TWLO)	October 2025	33.14%
Rocket Lab USA (RKLB)	October 2025	32.93%

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