Palantir Technologies (PLTR) had the highest return in August 2026 by a mega-cap US stock, returning 47.1%.

ASSET	MONTH	% RETURN
Palantir Technologies (PLTR)	August 2026	47.1%
Sandisk (SNDK)	August 2026	35.08%
SpaceX (SPCX)	August 2026	35.05%
Micron Technology (MU)	August 2026	21.92%
Crowdstrike (CRWD)	August 2026	19.05%
Tesla (TSLA)	August 2026	18.33%
SK Hynix Inc American Depositary Shares (SKHY)	August 2026	17.65%
Marvell Technology (MRVL)	August 2026	17.25%
SAP SE ADR (SAP)	August 2026	15.23%
Dell Technologies (DELL)	August 2026	14.67%
Merck (MRK)	August 2026	13.78%
Palo Alto Networks (PANW)	August 2026	13.56%
Oracle (ORCL)	August 2026	13.04%
BHP (BHP)	August 2026	12.84%
Arista Networks (ANET)	August 2026	12.19%
NVIDIA (NVDA)	August 2026	11.68%
Netflix (NFLX)	August 2026	11.38%
Amgen (AMGN)	August 2026	11.3%
Thermo Fisher Scientific (TMO)	August 2026	7.14%
Microsoft (MSFT)	August 2026	6.75%
Chevron (CVX)	August 2026	6.43%
Lam Research (LRCX)	August 2026	6.41%
Exxon Mobil (XOM)	August 2026	5.56%
ASML Holding NV New York Registry Shares (ASML)	August 2026	5.36%
Arm Holdings plc American Depositary Shares (ARM)	August 2026	5.17%

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