Marvell Technology (MRVL) has had the highest return today by a mega-cap US stock, returning 6%.

ASSET	DATE	% RETURN
Marvell Technology (MRVL)	10/13/2026	5.99%
Sandisk (SNDK)	10/13/2026	5.41%
Oracle (ORCL)	10/13/2026	5.36%
Advanced Micro Devices (AMD)	10/13/2026	4.85%
Arm Holdings plc American Depositary Shares (ARM)	10/13/2026	4.1%
Facebook (META)	10/13/2026	3.6%
SK Hynix Inc American Depositary Shares (SKHY)	10/13/2026	3.32%
Intel (INTC)	10/13/2026	3.23%
GE Vernova LLC (GEV)	10/13/2026	3.02%
Texas Instruments (TXN)	10/13/2026	2.89%
Dell Technologies (DELL)	10/13/2026	2.85%
Broadcom (AVGO)	10/13/2026	2.21%
Micron Technology (MU)	10/13/2026	2.05%
NVIDIA (NVDA)	10/13/2026	1.86%
Amphenol (APH)	10/13/2026	1.46%
Alibaba (BABA)	10/13/2026	1.33%
Taiwan Semiconductor Manufacturing (TSM)	10/13/2026	1.28%
International Business Machines (IBM)	10/13/2026	1.12%
Mastercard (MA)	10/13/2026	0.85%
SAP SE ADR (SAP)	10/13/2026	0.8%
Tesla (TSLA)	10/13/2026	0.78%
Shell PLC ADR (SHEL)	10/13/2026	0.72%
Cisco Systems (CSCO)	10/13/2026	0.69%
ASML Holding NV New York Registry Shares (ASML)	10/13/2026	0.63%
Exxon Mobil (XOM)	10/13/2026	0.37%

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