Arm Holdings plc American Depositary Shares (ARM) had the highest return on Thursday by a mega-cap US stock, returning 7%.

ASSET	DATE	% RETURN
Arm Holdings plc American Depositary Shares (ARM)	10/15/2026	6.96%
Micron Technology (MU)	10/15/2026	6.85%
SK Hynix Inc American Depositary Shares (SKHY)	10/15/2026	5.97%
Oracle (ORCL)	10/15/2026	5%
Marvell Technology (MRVL)	10/15/2026	4.43%
Advanced Micro Devices (AMD)	10/15/2026	4.12%
International Business Machines (IBM)	10/15/2026	3.43%
ASML Holding NV New York Registry Shares (ASML)	10/15/2026	2.56%
GE Vernova LLC (GEV)	10/15/2026	2.37%
BHP (BHP)	10/15/2026	2.02%
Intel (INTC)	10/15/2026	1.88%
Palantir Technologies (PLTR)	10/15/2026	1.85%
Broadcom (AVGO)	10/15/2026	1.77%
Alibaba (BABA)	10/15/2026	1.72%
Taiwan Semiconductor Manufacturing (TSM)	10/15/2026	1.71%
American Express (AXP)	10/15/2026	1.57%
Amazon (AMZN)	10/15/2026	1.54%
Wells Fargo (WFC)	10/15/2026	1.53%
Thermo Fisher Scientific (TMO)	10/15/2026	1.51%
Netflix (NFLX)	10/15/2026	1.48%
Facebook (META)	10/15/2026	1.4%
Goldman Sachs (GS)	10/15/2026	1.4%
Caterpillar (CAT)	10/15/2026	1.36%
Texas Instruments (TXN)	10/15/2026	1.35%
UnitedHealth (UNH)	10/15/2026	1.35%

Mega-cap stocks are treated as having a market cap of $200B+.