ARM — ARM HOLDINGS PLC /UK
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2023-09-14.
Performance
Technicals
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Measured signals that fired on ARM
| date | signal | measured base rate |
|---|---|---|
| 2026-08-18 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-08-05 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-23 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-16 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-05-21 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-05-20 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-17 | Bartels Laura Kathleen Chief Accounting Officer | Shares withheld for tax | 856 | 271.43 | 232.3K |
| 2026-08-17 | Bartels Laura Kathleen Chief Accounting Officer | Option exercise | 862 | — | — |
| 2026-08-17 | Bartels Laura Kathleen Chief Accounting Officer | Option exercise | 819 | — | — |
| 2026-08-07 | Sine Jeffrey Director | Gift | 9.6K | 0.00 | 0 |
| 2026-06-02 | Bartels Laura Kathleen Chief Accounting Officer | Open-market sale | 11.3K | 392.70 | 4.4M |
| 2026-06-01 | Abbey William Chief Commercial Officer | Open-market sale | 3.9K | 415.52 | 1.6M |
| 2026-06-01 | Abbey William Chief Commercial Officer | Open-market sale | 2.6K | 383.73 | 1.0M |
| 2026-05-28 | Abbey William Chief Commercial Officer | Open-market sale | 4.2K | 343.81 | 1.4M |
| 2026-05-22 | Abbey William Chief Commercial Officer | Open-market sale | 2.3K | 305.82 | 703.4K |
| 2026-05-21 | Eaton Charlotte Claire Chief People Officer | Open-market sale | 5.0K | 291.08 | 1.5M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1.4B | 9.4M |
| MORGAN STANLEY | 675.3M | 4.5M |
| Capital Research Global Investors | 638.1M | 4.2M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 578.5M | 3.8M |
| Invesco Ltd. | 446.6M | 3.0M |
| FMR LLC | 370.5M | 2.4M |
| Sustainable Growth Advisers, LP | 303.6M | 2.0M |
| Alphabet Inc. | 296.6M | 2.0M |
| Altimeter Capital Management, LP | 259.5M | 1.7M |
| UBS Group AG | 253.7M | 1.7M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-18 | 2026-08-17 | on EDGAR ↗ |
| 4 | 2026-08-11 | 2026-08-07 | on EDGAR ↗ |
| 6-K | 2026-08-10 | 2026-08-10 | on EDGAR ↗ |
| 6-K | 2026-07-29 | 2026-06-30 | on EDGAR ↗ |
| 6-K | 2026-07-29 | 2026-07-29 | on EDGAR ↗ |
| 4 | 2026-06-04 | 2026-06-02 | on EDGAR ↗ |
| 4 | 2026-06-03 | 2026-06-01 | on EDGAR ↗ |
| 4 | 2026-06-01 | 2026-05-28 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
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