Arm Holdings ARM
$174.62 +$7.90 (+4.74%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $174.50 -0.07%
Open$177.24
Prev close$166.72
Day range$169.61 – $177.62
Volume6.53M
Market cap$186.84B
P/E (TTM)200.7
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership96.0%-0.03 pts vs. prior quarter
Institutions holding1,126-13 vs. prior quarter
Insider trades (recent)25 buys / 25 sellsBalanced
Short interest1.66% of floatDays to cover 3.8 · as of 15 Oct 2026
Short-sale volume share12.3%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$127.18M (4 inflow days, 16 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 89.3% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 1.58% to 1.66% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +7,630,795 | 1.1% |
| Capital Research | Mutual Fund | 2026/Q3 | +3,528,098 | 0.8% |
| Arrowstreet Capital, Limited Partnership | Mutual Fund | 2026/Q3 | +3,149,544 | 0.4% |
| FMR | Mutual Fund | 2026/Q3 | +1,608,261 | 0.4% |
| Hillhouse Capital Management, Ltd. | VC/PE Fund | 2026/Q3 | +981,449 | 0.1% |
| The Goldman Sachs Group, Inc. | Public Company | 2026/Q3 | +879,998 | 0.2% |
| Susquehanna International Group, LLP | Private Company | 2026/Q3 | +845,701 | 0.2% |
| RBC Global Asset Management Inc. | Mutual Fund | 2026/Q3 | +800,053 | 0.1% |
| BlackRock | Mutual Fund | 2026/Q3 | +793,291 | 0.2% |
| Sands Capital Management, LLC | Mutual Fund | 2026/Q3 | +642,829 | 0.1% |
| Putnam LLC | Mutual Fund | 2026/Q3 | +561,585 | 0.1% |
| JPMorgan Chase & Co. | Public Company | 2026/Q3 | +531,867 | 0.1% |
| J.P. Morgan Asset Management, Inc. | Mutual Fund | 2026/Q3 | +474,074 | 0.0% |
| Bank of America Corporation | Public Company | 2026/Q3 | +465,456 | 0.1% |
| Allianz Asset Management AG | Mutual Fund | 2026/Q3 | +442,547 | 0.0% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 20 Sep 2026 | Jason Child | Chief Financial Officer | Automatic Disposition | -10,400 | $300.00 | 153,442 |
| 13 Sep 2026 | William Abbey | Executive Vice President | Other Derivative Acquisition | +17,288 | – | 65,270 |
| 8 Sep 2026 | Rene Anthony Andrada Haas | Chief Executive Officer | Other Derivative Acquisition | +425,000 | – | 425,000 |
| 30 Aug 2026 | Rene Anthony Andrada Haas | Chief Executive Officer | Other Acquisition | +64 | $108.33 | 396,071 |
| 26 Aug 2026 | Jason Child | Chief Financial Officer | Automatic Disposition | -10,400 | $255.33 | 163,832 |
| 16 Aug 2026 | Laura Bartels | Chief Accounting Officer | Derivative Exercise and Sale | -856 | $271.43 | 12,960 |
| 16 Aug 2026 | Laura Bartels | Chief Accounting Officer | Derivative Exercise and Retained | +825 | – | 12,960 |
| 6 Aug 2026 | Jeffrey Sine | Director | Other Disposition | -9,572 | – | – |
| 1 Jun 2026 | Laura Bartels | Chief Accounting Officer | Private Disposition | -11,306 | $392.70 | 12,135 |
| 31 May 2026 | William Abbey | Executive Vice President | Private Disposition | -6,566 | $415.52 | 20,563 |
| 27 May 2026 | William Abbey | Executive Vice President | Private Disposition | -4,200 | $343.81 | 27,129 |
| 21 May 2026 | William Abbey | Executive Vice President | Private Disposition | -2,300 | $305.82 | 31,329 |
| 20 May 2026 | William Abbey | Executive Vice President | Private Disposition | -4,655 | $287.03 | 33,629 |
| 20 May 2026 | Charlotte Eaton | Chief Human Resources Officer | Private Disposition | -7,805 | $291.08 | – |
| 20 May 2026 | Charlotte Eaton | Chief Human Resources Officer | Private Disposition | -7,100 | $282.77 | 7,805 |
| 19 May 2026 | Jason Child | Chief Financial Officer | Automatic Disposition | -31,920 | $226.54 | 174,232 |
| 19 May 2026 | Charlotte Eaton | Chief Human Resources Officer | Intent to Sell (Form 144) | -3,100 | $252.25 | – |
| 19 May 2026 | William Abbey | Executive Vice President | Private Disposition | -15,956 | $257.18 | 38,284 |
| 18 May 2026 | Spencer Collins | Executive VP, Chief Legal Officer, Company Secretary & Head of Corporate Development | Private Disposition | -40,941 | $215.00 | – |
| 17 May 2026 | Richard Grisenthwaite | Executive VP & Chief Architect | Private Disposition | -24,339 | $209.15 | – |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 17,701,475 | 1.7% | 3.8 |
| 30 Sep 2026 | 16,189,965 | 1.5% | 2.3 |
| 15 Sep 2026 | 15,521,694 | 1.5% | 3.9 |
| 31 Aug 2026 | 16,740,615 | 1.6% | 4.4 |
| 14 Aug 2026 | 18,264,105 | 1.7% | 4.1 |
| 31 Jul 2026 | 16,867,253 | 1.6% | 2.7 |
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