best performing large and mega cap stocks 2026 week

Applied Opt (AAOI) had the best week this year by a US stock with a market cap of $10B+ the week of February 23, 2026, returning 66.7%.

ASSETWEEK% RETURN
Applied Opt (AAOI)
2/23/2026 - 3/1/2026
66.73%
IONQ (IONQ)
4/13/2026 - 4/19/2026
63.12%
Sterling Construction (STRL)
5/4/2026 - 5/10/2026
57.07%
DigitalOcean (DOCN)
5/4/2026 - 5/10/2026
56.14%
Flex (FLEX)
5/4/2026 - 5/10/2026
53.85%
Revolution Medicines (RVMD)
1/5/2026 - 1/11/2026
51.25%
Cerebras Systems Inc Class A Common Stock (CBRS)
5/11/2026 - 5/17/2026
51.2%
AAON (AAON)
5/4/2026 - 5/10/2026
49.19%
Sitime (SITM)
5/4/2026 - 5/10/2026
48.62%
Arm Holdings plc American Depositary Shares (ARM)
5/18/2026 - 5/24/2026
46.09%
Snowflake (SNOW)
5/25/2026 - 5/31/2026
44.47%
Akamai Technologies (AKAM)
5/4/2026 - 5/10/2026
41.63%
Datadog (DDOG)
5/4/2026 - 5/10/2026
41.43%
Arm Holdings plc American Depositary Shares (ARM)
4/20/2026 - 4/26/2026
40.26%
Dell Technologies (DELL)
5/25/2026 - 5/31/2026
40.19%
Cognex (CGNX)
2/9/2026 - 2/15/2026
38.85%
XPO Logistics (XPO)
2/2/2026 - 2/8/2026
37.76%
TTM Technologies (TTMI)
1/12/2026 - 1/18/2026
37.52%
Galaxy Digital (GLXY)
1/12/2026 - 1/18/2026
37.24%
Applied Opt (AAOI)
4/6/2026 - 4/12/2026
36.85%
Oklo (OKLO)
4/13/2026 - 4/19/2026
36.35%
Hut 8 Corp Common Stock (HUT)
4/6/2026 - 4/12/2026
36.26%
Lumentum (LITE)
2/2/2026 - 2/8/2026
36.13%
Planet Labs PBC (PL)
3/16/2026 - 3/22/2026
34.62%
Rocket Lab USA (RKLB)
5/4/2026 - 5/10/2026
34.6%