ARGXNasdaqBiological Products, (No Diagnostic Substances)Fiscal year ends December 31
ARGENX SE
Financials through fiscal 2025, year ended Dec 31, 2025Last filing: 20-F on Mar 19, 2026
$825.61+6.47 (+0.79%)
Close on Oct 19, 2026
- Market cap
- –
- P/E (TTM)
- 42.2
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
45.7%
28M of 62M shares
Institutional holders
506
84 new, 48 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Abigail P. Johnson | 5,409,597 | 8.70% | 13G (passive) amendment | Mar 31, 2026 |
| BlackRock, Inc. | 4,036,853 | 6.80% | 13G (passive) amendment | Dec 31, 2023 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of ARGX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| FMR LLC | 5,231,452 | 8.45% | $4.85B | +240,418 | 0.21% |
| Price T Rowe Associates Inc /Md/ | 2,678,047 | 4.33% | $2.48M | −696,908 | 0.25% |
| Jupiter Topco LLC | 2,474,015 | 4.00% | $2.30B | New | 0.94% |
| Capital World Investors | 2,199,770 | 3.55% | $2.04B | −56,446 | 0.24% |
| Artisan Partners Limited Partnership | 1,508,778 | 2.44% | $1.40B | +40,796 | 2.22% |
| Avoro Capital Advisors LLC | 1,000,000 | 1.62% | $927.77M | – | 8.33% |
| Wellington Management Group Llp | 930,548 | 1.50% | $863.33M | −90,909 | 0.15% |
| BlackRock, Inc. | 777,237 | 1.26% | $721.10M | −31,100 | 0.01% |
| Rtw Investments, LP | 709,446 | 1.15% | $658.20M | – | 5.62% |
| Morgan Stanley | 643,123 | 1.04% | $596.67M | +82,412 | 0.03% |
| Invesco Ltd. | 443,990 | 0.72% | $411.92M | −150,707 | 0.03% |
| Bank Of America Corp /De/ | 400,234 | 0.65% | $371.33M | +117 | 0.02% |
| Alliancebernstein L.P. | 395,661 | 0.64% | $288.93M | −26,643 | 0.10% |
| Bellevue Group AG | 301,000 | 0.49% | $279.26M | −12,000 | 5.88% |
| Sands Capital Management, LLC | 298,599 | 0.48% | $277.03M | −41,686 | 1.03% |
| Bessemer Group Inc | 267,779 | 0.43% | $248.44K | +203,528 | 0.34% |
| William Blair Investment Management, LLC | 264,617 | 0.43% | $245.49M | −1,450 | 0.74% |
| Sei Investments Co | 255,073 | 0.41% | $236.65M | −31,893 | 0.21% |
| Clearbridge Investments, LLC | 253,776 | 0.41% | $235.45M | +22,420 | 0.19% |
| Jennison Associates LLC | 226,200 | 0.37% | $209.86M | −11,268 | 0.13% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 506 | 28M | 45.7% | 84 / 181 | 162 / 48 | 4M | 2M |
| Q1 2026 | 477 | 29M | 46.6% | 63 / 177 | 172 / 89 | 2M | 3M |
| Q4 2025 | 509 | 30M | 48.5% | 100 / 174 | 167 / 52 | 3M | 4M |
| Q3 2025 | 469 | 31M | 49.3% | 91 / 178 | 136 / 57 | 2M | 4M |
| Q2 2025 | 438 | 32M | 52.0% | 54 / 176 | 145 / 60 | 3M | 4M |
| Q1 2025 | 447 | 33M | 53.9% | 83 / 156 | 151 / 27 | 2M | 3M |
| Q4 2024 | 397 | 34M | 55.2% | 80 / 144 | 122 / 34 | 3M | 3M |
| Q3 2024 | 357 | 35M | 56.7% | 55 / 135 | 117 / 32 | 5M | 3M |
| Q2 2024 | 336 | 34M | 55.7% | 52 / 130 | 106 / 41 | 3M | 4M |
| Q1 2024 | 328 | 35M | 57.2% | 44 / 127 | 115 / 61 | 6M | 4M |
| Q4 2023 | 346 | 33M | 54.1% | 66 / 149 | 99 / 58 | 6M | 5M |
| Q3 2023 | 341 | 33M | 52.8% | 78 / 137 | 95 / 23 | 5M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of ARGX | Value | % of fund | As of |
|---|---|---|---|---|---|
| EUPAC Fund | 1,024,240 | 1.66% | $950.26M | 0.67% | Jun 30, 2026 |
| New Economy Fund | 713,694 | 1.15% | $596.64M | 1.16% | May 31, 2026 |
| Fidelity Growth Company Fund | 609,066 | 0.98% | $509.17M | 0.52% | May 31, 2026 |
| Janus Henderson Forty Fund | 518,956 | 0.84% | $481.47M | 2.02% | Jun 30, 2026 |
| Fidelity OTC Portfolio | 481,926 | 0.78% | $411.48M | 0.95% | Jul 31, 2026 |
| iShares Biotechnology ETF | 368,177 | 0.59% | $341.58M | 3.76% | Jun 30, 2026 |
| Janus Henderson Enterprise Fund | 309,064 | 0.50% | $286.74M | 1.28% | Jun 30, 2026 |
| Invesco American Franchise Fund | 245,620 | 0.40% | $205.34M | 1.12% | May 31, 2026 |
| T. Rowe Price Growth Stock Fund, Inc. | 225,019 | 0.36% | $208.77M | 0.42% | Jun 30, 2026 |
| T. Rowe Price Large-Cap Growth Fund | 211,419 | 0.34% | $196.15M | 0.95% | Jun 30, 2026 |
| Fidelity Contrafund | 210,533 | 0.34% | $195.33M | 0.11% | Jun 30, 2026 |
| Fidelity Puritan Fund | 209,689 | 0.34% | $175.30M | 0.52% | May 31, 2026 |
| T. Rowe Price New Horizons Fund, Inc. | 208,186 | 0.34% | $193.15M | 1.31% | Jun 30, 2026 |
| T. Rowe Price Overseas Stock Fund | 188,952 | 0.31% | $161.33M | 0.65% | Jul 31, 2026 |
| Fidelity Advisor Growth Opportunities Fund | 181,699 | 0.29% | $151.90M | 0.43% | May 31, 2026 |