| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ | 6% | -28% | $2,689,881,320 | -$985,796,144 | 3,647,000 | -27% | T. Rowe Price Associates, Inc. | 30 Sep 2025 |
| Artisan Partners Limited Partnership | 3.8% | $1,316,438,506 | 2,349,776 | Artisan Partners Asset Management Inc. | 30 Jun 2025 |
As of 31 Dec 2025, 500 institutional investors reported holding 29,735,788 shares of ARGENX SE - ADR (ARGX). This represents 49% of the company’s total 60,783,333 outstanding shares.
The largest institutional shareholders of ARGENX SE - ADR (ARGX) together control 39% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| FMR LLC | 9.2% | 5,592,319 | -1.8% | 0.24% | $4,702,860,205 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.5% | 3,362,324 | -7.6% | 0.3% | $2,827,547,000 |
| JANUS HENDERSON GROUP PLC | 4% | 2,458,164 | -4.5% | 0.92% | $2,057,856,370 |
| Capital World Investors | 3.2% | 1,916,234 | -2.2% | 0.22% | $1,611,433,480 |
| Artisan Partners Limited Partnership | 2.9% | 1,756,942 | -20% | 2.3% | $1,477,500,737 |
| Avoro Capital Advisors LLC | 1.6% | 990,000 | 0% | 8.2% | $832,540,500 |
| BlackRock, Inc. | 1.2% | 735,598 | +40% | 0.01% | $618,601,356 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.1% | 679,236 | -7% | 0.1% | $571,203,514 |
| RTW INVESTMENTS, LP | 1.1% | 673,497 | 0% | 5.7% | $566,377,302 |
| MORGAN STANLEY | 0.85% | 518,851 | +19% | 0.03% | $436,329,657 |
| Clearbridge Investments, LLC | 0.85% | 513,764 | -32% | 0.35% | $432,050,063 |
| Bellevue Group AG | 0.76% | 461,854 | -15% | 7.4% | $388,396,121 |
| Invesco Ltd. | 0.69% | 416,408 | +390% | 0.05% | $350,178,308 |
| ALLIANCEBERNSTEIN L.P. | 0.68% | 414,182 | +389% | 0.11% | $348,306,353 |
| BANK OF AMERICA CORP /DE/ | 0.66% | 400,776 | +17% | 0.02% | $337,032,576 |
| SANDS CAPITAL MANAGEMENT, LLC | 0.59% | 356,870 | +2047% | 0.91% | $300,109,826 |
| CITADEL ADVISORS LLC | 0.58% | 350,851 | -51% | 0.2% | $295,048,149 |
| SEI INVESTMENTS CO | 0.54% | 330,506 | +5.8% | 0.27% | $277,936,826 |
| TWO SIGMA INVESTMENTS, LP | 0.43% | 258,556 | -12% | 0.32% | $217,432,668 |
| FRANKLIN RESOURCES INC | 0.39% | 237,701 | -8% | 0.05% | $199,895,051 |
| JENNISON ASSOCIATES LLC | 0.38% | 229,761 | -4.4% | 0.12% | $193,217,916 |
| Fiera Capital Corp | 0.37% | 225,971 | +27% | 0.6% | $190,030,312 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 0.37% | 223,666 | 0.52% | $188,070,728 | |
| AMERICAN CENTURY COMPANIES INC | 0.36% | 221,048 | -3.8% | 0.09% | $185,895,645 |
| LORD, ABBETT & CO. LLC | 0.34% | 203,864 | +3.5% | 0.53% | $171,439,000 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 29,735,788 | $24,996,345,370 | -$624,581,778 | $840.95 | 500 |
| 2025 Q3 | 30,517,541 | $22,513,715,603 | -$1,073,799,877 | $737.56 | 463 |
| 2025 Q2 | 32,113,379 | $17,700,251,639 | -$650,880,957 | $551.22 | 432 |
| 2025 Q1 | 33,350,566 | $19,728,647,418 | -$538,199,538 | $591.86 | 440 |
| 2024 Q4 | 34,127,043 | $20,989,465,522 | -$514,339,139 | $615.00 | 392 |
| 2024 Q3 | 35,023,889 | $18,983,773,082 | +$318,558,493 | $542.08 | 353 |
| 2024 Q2 | 34,272,091 | $14,739,068,000 | +$209,398,089 | $430.04 | 333 |
| 2024 Q1 | 33,972,829 | $13,375,733,075 | +$491,825,471 | $393.72 | 323 |
| 2023 Q4 | 32,743,580 | $12,457,326,565 | -$54,572,297 | $380.43 | 344 |
| 2023 Q3 | 32,304,467 | $15,882,569,669 | +$743,873,334 | $491.63 | 339 |
| 2023 Q2 | 30,837,175 | $12,017,706,842 | -$124,589,442 | $389.73 | 284 |
| 2023 Q1 | 31,161,539 | $11,606,411,682 | +$212,961,249 | $372.58 | 268 |
| 2022 Q4 | 30,636,859 | $11,606,887,640 | -$327,489,209 | $378.83 | 269 |
| 2022 Q3 | 31,719,850 | $11,203,694,460 | -$1,130,342,709 | $353.05 | 247 |
| 2022 Q2 | 32,849,679 | $12,441,524,780 | +$297,990,141 | $378.88 | 226 |
| 2022 Q1 | 32,214,227 | $10,157,335,912 | +$1,037,726,968 | $315.31 | 196 |
| 2021 Q4 | 28,919,142 | $10,126,721,772 | +$177,117,824 | $350.19 | 203 |
| 2021 Q3 | 28,383,120 | $8,571,126,445 | -$97,752,555 | $302.00 | 178 |
| 2021 Q2 | 28,455,441 | $8,567,827,463 | +$1,980,236 | $301.07 | 173 |
| 2021 Q1 | 28,512,399 | $7,852,287,235 | +$830,872,986 | $275.39 | 185 |
| 2020 Q4 | 25,489,136 | $7,496,328,068 | -$41,742,172 | $294.09 | 170 |
| 2020 Q3 | 25,619,531 | $6,725,637,706 | -$279,942,268 | $262.52 | 154 |
| 2020 Q2 | 26,726,537 | $6,038,628,842 | +$787,556,149 | $225.23 | 162 |
| 2020 Q1 | 23,348,647 | $3,076,234,326 | -$61,977,095 | $131.73 | 139 |
| 2019 Q4 | 23,704,346 | $3,805,799,945 | +$211,376,338 | $160.52 | 146 |
| 2019 Q3 | 22,370,016 | $2,548,680,181 | -$6,180,324 | $113.96 | 129 |
| 2019 Q2 | 22,382,688 | $3,168,153,526 | +$202,152,598 | $141.58 | 132 |
| 2019 Q1 | 21,861,856 | $2,728,838,981 | +$198,069,924 | $124.84 | 129 |
| 2018 Q4 | 20,499,548 | $1,969,933,884 | +$12,993,447 | $96.07 | 108 |
| 2018 Q3 | 20,684,670 | $1,568,631,975 | +$198,929,711 | $75.84 | 105 |
| 2018 Q2 | 18,031,387 | $1,494,404,458 | +$85,594,520 | $82.86 | 82 |
| 2018 Q1 | 16,999,982 | $1,367,312,465 | +$220,516,340 | $80.44 | 83 |
| 2017 Q4 | 14,513,752 | $916,370,452 | +$485,289,724 | $63.14 | 64 |
| 2017 Q3 | 6,945,598 | $155,726,000 | +$18,796,428 | $22.60 | 31 |
| 2017 Q2 | 6,115,317 | $129,239,000 | +$129,239,000 | $21.21 | 31 |