ARM HOLDINGS PLC (ARM): Institutional Ownership
Hedge funds and institutional managers reporting a position in ARM. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
27
13F filers
Aggregate Value
$1.1B
Across holders
Last Price
$334.27
2026-06-26
Sector
—
GICS
Holder activity11 new6 added8 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| Altimeter Capital Management, LLC CIK 0001541617 | Hedge Fund | 1.72M | $259.5M | 24.4% | 4.6% | New | — | Q1 2026 |
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 1.05M | $169.8M | 16.0% | 0.6% | New | — | Q2 2025 |
| COATUE MANAGEMENT LLC CIK 0001135730 | Hedge Fund | 998K | $109.0M | 10.3% | 0.3% | Reduced | $-3.8M | Q4 2025 |
| Bridgewater Associates, LP CIK 0001350694 | Hedge Fund | 593K | $89.8M | 8.4% | 0.4% | Added | +$40.4M | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 580K | $87.7M | 8.2% | 0.1% | Added | +$76.4M | Q1 2026 |
| Whale Rock Capital Management LLC CIK 0001387322 | Hedge Fund | 452K | $68.4M | 6.4% | 0.9% | New | — | Q1 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 345K | $52.2M | 4.9% | 0.4% | New | — | Q1 2026 |
| PRIMECAP MANAGEMENT CO/CA/ CIK 0000763212 | Institutional Manager | 234K | $35.4M | 3.3% | 0.0% | Unchanged | +$0 | Q1 2026 |
| TUDOR INVESTMENT CORP ET AL CIK 0000923093 | Hedge Fund | 212K | $32.1M | 3.0% | 0.1% | Reduced | $-3.4M | Q1 2026 |
| BAILLIE GIFFORD & CO CIK 0001088875 | Institutional Manager | 169K | $25.6M | 2.4% | 0.0% | Added | +$12.3M | Q1 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 168K | $25.4M | 2.4% | 0.0% | Added | +$18.2M | Q1 2026 |
| LANSDOWNE PARTNERS (UK) LLP CIK 0001608485 | Hedge Fund | 155K | $23.5M | 2.2% | 1.3% | Added | +$15.8M | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 199K | $21.8M | 2.0% | 0.0% | New | — | Q4 2025 |
| Duquesne Family Office LLC CIK 0001536411 | Family Office | 107K | $16.1M | 1.5% | 0.5% | New | — | Q1 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 100K | $15.1M | 1.4% | 0.0% | Reduced | $-3.9M | Q1 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 86K | $13.0M | 1.2% | 0.0% | Reduced | $-24.3M | Q1 2026 |
| Eisler Capital (UK) Ltd. CIK 0001849486 | Hedge Fund | 34K | $4.8M | 0.5% | 0.0% | Reduced | $-3.6M | Q3 2024 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 22K | $3.5M | 0.3% | 0.0% | New | — | Q2 2025 |
| Verition Fund Management LLC CIK 0001454027 | Hedge Fund | 23K | $3.5M | 0.3% | 0.0% | Added | +$2.5M | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 17K | $2.6M | 0.2% | 0.0% | Reduced | $-69.1M | Q1 2026 |
New
Hedge Fund
$259.5M· 24.4% of total· 4.6% port· 1.72M sh· — QoQ· Q1 2026
New
Hedge Fund
$169.8M· 16.0% of total· 0.6% port· 1.05M sh· — QoQ· Q2 2025
Reduced
Hedge Fund
$109.0M· 10.3% of total· 0.3% port· 998K sh· $-3.8M QoQ· Q4 2025
Added
Hedge Fund
$89.8M· 8.4% of total· 0.4% port· 593K sh· +$40.4M QoQ· Q1 2026
Added
Hedge Fund
$87.7M· 8.2% of total· 0.1% port· 580K sh· +$76.4M QoQ· Q1 2026
New
Hedge Fund
$68.4M· 6.4% of total· 0.9% port· 452K sh· — QoQ· Q1 2026
New
Hedge Fund
$52.2M· 4.9% of total· 0.4% port· 345K sh· — QoQ· Q1 2026
Unchanged
Institutional Manager
$35.4M· 3.3% of total· 0.0% port· 234K sh· +$0 QoQ· Q1 2026
Reduced
Hedge Fund
$32.1M· 3.0% of total· 0.1% port· 212K sh· $-3.4M QoQ· Q1 2026
Added
Institutional Manager
$25.6M· 2.4% of total· 0.0% port· 169K sh· +$12.3M QoQ· Q1 2026
Added
Hedge Fund
$25.4M· 2.4% of total· 0.0% port· 168K sh· +$18.2M QoQ· Q1 2026
Added
Hedge Fund
$23.5M· 2.2% of total· 1.3% port· 155K sh· +$15.8M QoQ· Q1 2026
New
Hedge Fund
$21.8M· 2.0% of total· 0.0% port· 199K sh· — QoQ· Q4 2025
New
Family Office
$16.1M· 1.5% of total· 0.5% port· 107K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$15.1M· 1.4% of total· 0.0% port· 100K sh· $-3.9M QoQ· Q1 2026
Reduced
Hedge Fund
$13.0M· 1.2% of total· 0.0% port· 86K sh· $-24.3M QoQ· Q1 2026
Reduced
Hedge Fund
$4.8M· 0.5% of total· 0.0% port· 34K sh· $-3.6M QoQ· Q3 2024
New
Hedge Fund
$3.5M· 0.3% of total· 0.0% port· 22K sh· — QoQ· Q2 2025
Added
Hedge Fund
$3.5M· 0.3% of total· 0.0% port· 23K sh· +$2.5M QoQ· Q1 2026
Reduced
Hedge Fund
$2.6M· 0.2% of total· 0.0% port· 17K sh· $-69.1M QoQ· Q1 2026
Reduced
Hedge Fund
$1.8M· 0.2% of total· 0.0% port· 12K sh· $-570.1M QoQ· Q1 2026
New
Hedge Fund
$1.5M· 0.1% of total· 0.1% port· 14K sh· — QoQ· Q1 2025
Reduced
Hedge Fund
$930K· 0.1% of total· 0.0% port· 6K sh· $-7.5M QoQ· Q1 2026
New
Institutional Manager
$299K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q4 2025
New
Hedge Fund
$255K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q3 2025
Unchanged
Hedge Fund
$110K· 0.0% of total· 0.0% port· 726 sh· +$0 QoQ· Q1 2026
New
Hedge Fund
$30K· 0.0% of total· 0.0% port· 186 sh· — QoQ· Q2 2024
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