Arm Holdings PLC
ARM- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001973239
In the last 90 days, Arm Holdings PLC insiders filed 0 open-market purchases and 2 sales; 963 institutions reported holding it in 13F filings for Q2 2026, worth $35.0B in total; 3 superinvestors hold it, including Altimeter Capital and Duquesne Family Office.
Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.
Q3 2026 vs. Q2 2026
How the institutions holding Arm Holdings PLC changed between Q2 2026 and Q3 2026.
All holders in Q3 2026All holders in Q2 2026
| Measure | Q2 2026 | Of which not filed for Q3 2026 | Q3 2026 | Change |
|---|---|---|---|---|
| Holders | 963 | 959 | 4 | 0 |
| Shares | 99.1M | 99.0M | 21.3K | +33 (+0.2%) |
| Value | $35.0B | $35.0B | $6.16M | −$1.37M (−18.2%) |
959 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (1)
Institutions that held Arm Holdings PLC at the end of Q3 2026 but not at the end of Q2 2026.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| CX Institutional | 201 | $58.0K | 0.00% |
Sold out (1)
Institutions that held Arm Holdings PLC at the end of Q2 2026 and filed for Q3 2026 without it.
| Institution | Shares, Q2 2026 | Value, Q2 2026 |
|---|---|---|
| Roxbury Financial LLC | 46 | $16.3K |
Not filed for Q3 2026 yet (959)
Institutions that held Arm Holdings PLC at the end of Q2 2026 and haven't filed a 13F for Q3 2026. Not filing isn't selling, so they aren't counted as sold out.
Showing the largest 100 of 959 by value.