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ARM · Arm Holdings PLC /Uk · Holdings

Track ARM — free
$295.04 -7.52 (-2.49%) At close · Oct 7
Market Cap
$317.09B
Shares
1.07B
Volume · Oct 7 3.43M Avg daily vol (3M) 5.28M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 988
Total Value: $55,309,913,136
Total Shares: 156,093,410
Showing 1–100 of 1,063 holdings by value · page 1 of 11

Institutional Ownership Trend

13 quarters

Holder Concentration

Across 988 13F filers
Top Holder
12.3%
Sep 2023 → Jun 2026 · range 7.4% – 20.9%
of institutional value
Top 5
37.7%
Sep 2023 → Jun 2026 · range 31.0% – 44.8%
of institutional value
Top 10
51.3%
Sep 2023 → Jun 2026 · range 47.6% – 60.7%
of institutional value
HHI
393
Sep 2023 → Jun 2026 · range 316 – 676
Broadly held
Showing 100 of 1,063
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1973239 CUSIP 042068205 13F (30d) 28 filings 20 filers Visit website Investor relations