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Of the 15 tracked institutions holding ARM, 11 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: +6.8pt. It's a gauge of who owns the name, not just how many.
Among the 15 tracked institutional investors we monitor, ARM (ARM HOLDINGS PLC) is held with a combined value of $2.33B across 15,405,455 shares. The largest holder is Capital Research Global Investors with a position worth $638.05M (0.10% of their portfolio). 4 funds opened new positions in the most recent quarter. 5 funds increased their holdings. 6 funds reduced their position.
Total Institutional Value
$2.33B
Total Shares Held
15,405,455
Institutional Holders
15
% of Shares Outstanding
1.4%
of 1.06B shares · SEC 2026-03-31
Days to Cover
1.5+5.2%
17.23M shares short · FINRA 2026-06-30
Tracked 13F institutions hold 1.4% of ARM's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-03-31), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | Capital Research Global Investors | $638.05M | 0.10% | +133.7% |
| 2 | FMR LLC | $370.49M | 0.02% | +41.5% |
| 3 | Altimeter Capital Management, LP | $259.51M | 4.55% | New |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | $250.47M | 0.05% | -23.0% |
| 5 | MILLENNIUM MANAGEMENT LLC | $191.53M | 0.08% | +16.9% |
| 6 | BlackRock, Inc. | $187.99M | 0.00% | -5.0% |
| 7 | BAILLIE GIFFORD & CO | $92.57M | 0.09% | -0.1% |
| 8 | Bridgewater Associates, LP | $89.76M | 0.40% | +81.8% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | $74.71M | 0.01% | +3.5% |
| 10 | Whale Rock Capital Management LLC | $68.44M | 0.88% | New |
| Member | Type | Date |
|---|---|---|
| Cleo Fields | Sell | Dec 11, 2025 |
| Jonathan Jackson | Sell | Sep 2, 2025 |
| Jonathan Jackson | Buy | Jul 17, 2025 |
| Cleo Fields | Buy |
As of the latest SEC 13F filings, Capital Research Global Investors is the largest institutional holder of ARM with a position worth $638.05M, representing 0.10% of their portfolio. In total, 15 institutional investors hold ARM with a combined value of $2.33B.
In the most recent quarter, 4 funds opened a new position in ARM. Additionally, 5 increased their holdings and 6 reduced their positions.
Institutional investors hold $2.33B worth of ARM stock across 15 positions. The largest institutional holder is Capital Research Global Investors with $638.05M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ARM, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ARM positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Jul 16, 2025 |
Last Close
$260.01
2026-07-24
YTD
+126.6%
46% of 52-week range
