ARGENX SE (ARGX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
481
Reporting holders
$23.5B
Reported value
40.5%
Of shares outstanding
1.6%
Held as options
+30
Holder change
Institutions report 25,081,890 shares against 61,883,306 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (concept 2025-12-31).
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| FMR LLC | $4.9B | 5,231,452 | 0.21% | 31q | +4.8%+$223.1M |
| Jupiter Topco LLC | $2.3B | 2,474,015 | 0.94% | new | FIRST |
| Capital World Investors | $2.0B | 2,199,770 | 0.24% | 30q | -2.5%-$52.4M |
| Artisan Partners Limited Partnership | $1.4B | 1,508,778 | 2.22% | 31q | +2.8%+$37.8M |
| Avoro Capital Advisors LLC | $927.8M | 1,000,000 | 8.33% | 31q | HELD |
| WELLINGTON MANAGEMENT GROUP LLP | $863.3M | 930,548 | 0.15% | 27q | -8.9%-$84.3M |
| BlackRock, Inc. | $721.1M | 777,237 | 0.01% | 8q | -3.8%-$28.9M |
| RTW INVESTMENTS, LP | $658.2M | 709,446 | 5.62% | 31q | HELD |
| MORGAN STANLEY | $596.7M | 643,123 | 0.03% | 35q | +14.7%+$76.5M |
| Invesco Ltd. | $411.9M | 443,990 | 0.03% | 25q | -25.3%-$139.8M |
| BANK OF AMERICA CORP /DE/ | $371.3M | 400,234 | 0.02% | 31q | HELD |
| ALLIANCEBERNSTEIN L.P. | $288.9M | 395,661 | 0.10% | 18q | -6.3%-$19.5M |
| Bellevue Group AG | $279.3M | 301,000 | 5.88% | 31q | -3.8%-$11.1M |
| SANDS CAPITAL MANAGEMENT, LLC | $277.0M | 298,599 | 1.03% | 4q | -12.3%-$38.7M |
| CITADEL ADVISORS LLC | $253.6M | 212,416 | 0.03% | 31q | -3.1%-$8.0M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $245.5M | 264,617 | 0.74% | 3q | -0.5%-$1.3M |
| SEI INVESTMENTS CO | $236.7M | 255,073 | 0.21% | 30q | -11.1%-$29.6M |
| Clearbridge Investments, LLC | $235.4M | 253,776 | 0.19% | 22q | +9.7%+$20.8M |
| JENNISON ASSOCIATES LLC | $209.9M | 226,200 | 0.13% | 31q | -4.7%-$10.5M |
| FRANKLIN RESOURCES INC | $208.7M | 224,930 | 0.05% | 31q | -3.7%-$7.9M |
| Pictet Asset Management Holding SA | $183.8M | 198,282 | 0.18% | 12q | +33.7%+$46.3M |
| TWO SIGMA INVESTMENTS, LP | $172.8M | 185,638 | 0.13% | 6q | +70.1%+$71.2M |
| AMERIPRISE FINANCIAL INC | $168.4M | 181,464 | 0.03% | 28q | -58.0%-$232.3M |
| GOLDMAN SACHS GROUP INC | $165.0M | 177,846 | 0.01% | 31q | -23.3%-$50.2M |
| Legal & General Group Plc | $164.4M | 177,164 | 0.03% | 17q | +17.4%+$24.4M |
| AMERICAN CENTURY COMPANIES INC | $160.7M | 173,193 | 0.07% | 29q | HELD |
| Public Sector Pension Investment Board | $156.4M | 168,600 | 0.20% | 3q | +130.0%+$88.4M |
| Allspring Global Investments Holdings, LLC | $155.4M | 170,829 | 0.24% | 17q | -2.6%-$4.1M |
| BNP PARIBAS FINANCIAL MARKETS | $146.5M | 157,958 | 0.05% | 17q | -11.2%-$18.4M |
| 1832 Asset Management L.P. | $146.5M | 157,940 | 0.07% | 8q | +87.6%+$68.4M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $145.5M | 474 | 0.01% | 31q | -96.7%-$4.3B |
| DEUTSCHE BANK AG\ | $127.4M | 137,335 | 0.04% | 34q | -1.5%-$1.9M |
| BAMCO INC /NY/ | $126.8M | 136,654 | 0.19% | 31q | -1.4%-$1.8M |
| BARCLAYS PLC | $124.7M | 134,427 | 0.02% | 24q | +2344.1%+$119.6M |
| LAZARD ASSET MANAGEMENT LLC | $122.5M | 131,996 | 0.19% | 24q | -1.0%-$1.3M |
| Checkpoint Capital L.P. | $121.8M | 131,283 | 31.25% | 11q | -14.2%-$20.1M |
| EVENTIDE ASSET MANAGEMENT, LLC | $116.6M | 125,668 | 1.56% | 31q | HELD |
| AGF MANAGEMENT LTD | $116.4M | 125,481 | 0.45% | 3q | HELD |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $113.0M | 121,786 | 0.11% | 7q | -5.7%-$6.8M |
| FIRST TRUST ADVISORS LP | $94.1M | 101,440 | 0.06% | 12q | -5.4%-$5.3M |
| MILLENNIUM MANAGEMENT LLC | $87.6M | 94,401 | 0.03% | 31q | +30.5%+$20.4M |
| ORBIMED ADVISORS LLC | $86.2M | 92,880 | 1.60% | 18q | -32.2%-$40.8M |
| Fiera Capital Corp | $83.9M | 90,423 | 0.30% | 27q | -58.4%-$117.6M |
| Capital Research Global Investors | $82.1M | 88,511 | 0.01% | new | NEW |
| FEDERATED HERMES, INC. | $81.0M | 87,288 | 0.12% | 31q | -8.4%-$7.4M |
| PINEBRIDGE INVESTMENTS LLC | $80.8M | 87,050 | 0.67% | 3q | -16.1%-$15.6M |
| Aberdeen Group plc | $77.8M | 83,822 | 0.11% | 11q | +2.1%+$1.6M |
| TimesSquare Capital Management, LLC | $77.1M | 83,114 | 1.13% | 31q | HELD |
| Candriam S.C.A. | $74.3M | 80,120 | 0.33% | 10q | +48.0%+$24.1M |
| BANK OF MONTREAL /CAN/ | $71.6M | 77,213 | 0.02% | 15q | -9.5%-$7.5M |
| Eagle Health Investments LP | $70.9M | 76,417 | 11.75% | 23q | HELD |
| Nuveen, LLC | $68.8M | 74,128 | 0.02% | 4q | +11.9%+$7.3M |
| D. E. Shaw & Co., Inc. | $66.2M | 8,263 | 0.03% | 22q | -84.1%-$351.4M |
| Amundi | $60.4M | 65,122 | 0.01% | 17q | +6.0%+$3.4M |
| NORTHERN TRUST CORP | $57.7M | 62,219 | 0.01% | 31q | +6.0%+$3.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $56.9M | 61,312 | 0.01% | 3q | +122.9%+$31.4M |
| CANADA PENSION PLAN INVESTMENT BOARD | $56.2M | 60,577 | 0.03% | new | NEW |
| Squarepoint Ops LLC | $54.2M | 58,400 | 0.06% | 14q | +212.7%+$36.9M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $54.1M | 58,267 | 0.08% | 3q | HELD |
| USS Investment Management Ltd | $53.8M | 57,903 | 0.19% | 16q | +376.8%+$42.5M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $53.0M | 57,082 | 0.17% | new | NEW |
| ENVESTNET ASSET MANAGEMENT INC | $51.3M | 55,346 | 0.01% | 31q | -9.9%-$5.6M |
| Woodline Partners LP | $51.1M | 55,025 | 0.16% | new | NEW |
| Rock Springs Capital Management LP | $48.9M | 52,750 | 2.39% | 31q | -46.4%-$42.4M |
| Ensign Peak Advisors, Inc | $48.3M | 52,027 | 0.08% | 27q | -63.7%-$84.6M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $47.0M | 50,607 | 0.07% | 2q | -43.8%-$36.5M |
| NOMURA ASSET MANAGEMENT CO LTD | $45.6M | 49,179 | 0.10% | 22q | HELD |
| JANE STREET GROUP, LLC | $44.0M | options only | 0.00% | 16q | OPTIONS |
| Point72 Asset Management, L.P. | $42.5M | 39,983 | 0.05% | 3q | HELD |
| Jefferies Financial Group Inc. | $41.8M | 45,068 | 0.28% | 13q | +50.2%+$14.0M |
| DIMENSIONAL FUND ADVISORS LP | $41.2M | 44,408 | 0.01% | 31q | +14.5%+$5.2M |
| Tri Locum Partners LP | $38.6M | 41,596 | 4.75% | 12q | +31.5%+$9.2M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $37.2M | 40,062 | 0.02% | new | NEW |
| IMC-Chicago, LLC | $36.7M | options only | 0.01% | 4q | OPTIONS |
| UBS Group AG | $33.9M | 36,583 | 0.00% | 31q | +15.6%+$4.6M |
| RAYMOND JAMES FINANCIAL INC | $32.2M | 34,757 | 0.01% | 7q | -5.6%-$1.9M |
| WELLS FARGO & COMPANY/MN | $32.0M | 34,453 | 0.01% | 30q | -54.8%-$38.7M |
| Assenagon Asset Management S.A. | $30.7M | 33,062 | 0.02% | 3q | +123.6%+$17.0M |
| LMR Partners LLP | $29.6M | 8,200 | 0.11% | 9q | -65.1%-$55.2M |
| VICTORY CAPITAL MANAGEMENT INC | $28.6M | 30,865 | 0.02% | 3q | -4.3%-$1.3M |
| Artia Global Partners LP | $27.6M | 29,739 | 5.09% | 15q | HELD |
| PEREGRINE CAPITAL MANAGEMENT LLC | $27.6M | 29,732 | 0.90% | new | NEW |
| Mediolanum International Funds Ltd | $27.2M | 29,785 | 0.23% | new | NEW |
| ROYAL BANK OF CANADA | $26.5M | 28,562 | 0.00% | 30q | -13.2%-$4.0M |
| Perpetual Ltd | $26.2M | 28,246 | 0.37% | 8q | HELD |
| BLAIR WILLIAM & CO/IL | $25.7M | 27,666 | 0.07% | 27q | +23.5%+$4.9M |
| ODDO BHF ASSET MANAGEMENT SAS | $23.2M | 25,009 | 1.07% | 7q | HELD |
| TD Asset Management Inc | $22.9M | 24,675 | 0.02% | 31q | -69.5%-$52.1M |
| GEODE CAPITAL MANAGEMENT, LLC | $22.1M | 23,861 | 0.00% | 31q | +1.2%+$270.9K |
| Patient Square Capital LP | $21.3M | 23,000 | 3.31% | 5q | -37.4%-$12.7M |
| Life Cycle Investment Partners Ltd | $20.9M | 22,490 | 0.10% | 3q | -61.8%-$33.7M |
| VAN ECK ASSOCIATES CORP | $20.6M | 22,193 | 0.01% | 16q | -45.1%-$16.9M |
| NEW YORK STATE COMMON RETIREMENT FUND | $20.5M | 22,082 | 0.03% | 31q | -44.0%-$16.1M |
| Soleus Capital Management, L.P. | $18.5M | 19,955 | 0.64% | 6q | +470.1%+$15.3M |
| LPL Financial LLC | $18.1M | 19,499 | 0.00% | 12q | -16.1%-$3.5M |
| Jain Global LLC | $17.5M | 18,913 | 0.07% | 6q | +307.5%+$13.2M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $17.4M | 18,797 | 0.07% | 7q | -17.0%-$3.6M |
| BRAIDWELL LP | $16.4M | 17,707 | 0.61% | 11q | -79.2%-$62.4M |
| Bank of New York Mellon Corp | $15.7M | 16,971 | 0.00% | 31q | -1.2%-$196.7K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $15.2M | 16,407 | 0.01% | 18q | -66.7%-$30.5M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | T. Rowe Price Associates, Inc. | 4.3% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 481 | $23.5B | 25,081,890 | 77 | 166 | 143 | 1.6% |
| Q1 2026 | 451 | $18.9B | 25,296,451 | 55 | 162 | 157 | 2.0% |
| Q4 2025 | 479 | $22.2B | 25,727,193 | 68 | 153 | 153 | 2.4% |
| Q3 2025 | 446 | $20.3B | 26,412,019 | 87 | 159 | 124 | 3.9% |
| Q2 2025 | 407 | $15.1B | 26,629,189 | 47 | 158 | 130 | 2.6% |
| Q1 2025 | 419 | $16.7B | 27,347,751 | 75 | 137 | 132 | 2.9% |
| Q4 2024 | 369 | $17.5B | 27,597,833 | 55 | 127 | 105 | 3.1% |
| Q3 2024 | 334 | $15.8B | 28,039,341 | 49 | 118 | 104 | 3.5% |
| Q2 2024 | 312 | $11.8B | 26,590,037 | 45 | 113 | 97 | 2.7% |
| Q1 2024 | 299 | $11.0B | 27,413,449 | 35 | 108 | 102 | 1.7% |
| Q4 2023 | 319 | $11.2B | 28,126,159 | 43 | 138 | 82 | 4.7% |
| Q3 2023 | 304 | $13.7B | 26,888,773 | 62 | 117 | 82 | 3.5% |
| Q2 2023 | 261 | $10.4B | 25,133,279 | 44 | 84 | 71 | 6.1% |
| Q1 2023 | 243 | $11.8B | 30,681,750 | 30 | 76 | 93 | 3.1% |
| Q4 2022 | 226 | $9.2B | 24,096,906 | 35 | 55 | 83 | 1.6% |
| Q3 2022 | 259 | $11.6B | 32,353,122 | 45 | 83 | 82 | 1.1% |
| Q2 2022 | 240 | $12.6B | 32,932,834 | 58 | 70 | 70 | 0.9% |
| Q1 2022 | 206 | $10.3B | 32,304,280 | 29 | 89 | 52 | 0.9% |
| Q4 2021 | 214 | $10.3B | 28,931,220 | 44 | 70 | 56 | 1.4% |
| Q3 2021 | 184 | $8.7B | 28,383,150 | 26 | 68 | 51 | 1.2% |
| Q2 2021 | 179 | $8.7B | 28,494,215 | 23 | 70 | 48 | 1.2% |
| Q1 2021 | 195 | $8.0B | 28,478,773 | 30 | 78 | 51 | 1.4% |
| Q4 2020 | 180 | $7.8B | 25,923,653 | 24 | 59 | 54 | 2.5% |
| Q3 2020 | 166 | $6.8B | 25,619,562 | 24 | 44 | 68 | 1.7% |
| Q2 2020 | 173 | $6.2B | 26,778,691 | 49 | 53 | 48 | 2.6% |
| Q1 2020 | 145 | $3.2B | 23,403,238 | 25 | 39 | 54 | 3.0% |
| Q4 2019 | 152 | $3.8B | 23,778,168 | 38 | 48 | 41 | 0.8% |
| Q3 2019 | 134 | $2.6B | 22,618,032 | 18 | 36 | 50 | 0.9% |
| Q2 2019 | 138 | $3.2B | 22,499,526 | 20 | 47 | 47 | 1.7% |
| Q1 2019 | 134 | $2.8B | 22,124,789 | 39 | 43 | 36 | 0.2% |
| Q4 2018 | 110 | $2.0B | 20,514,185 | 4 | 1 | 4 | 0.1% |