Who owns argenx?
Institutions own 46.0% of argenx's shares, through 528 funds, banks and other managers that report their holdings to the SEC; individual investors and others hold the rest. The largest on 30 June 2026 were FMR LLC (8.4%), Price T Rowe Associates Inc (4.3%), Jupiter Topco LLC (4.0%).
- Institutions own
- 46.0%
- Institutional holders
- 528
- The 10 largest hold
- 29.2%
- Free float
- 99.8%
- Holdings as of
- 30 Jun 2026
Who owns the shares
Shares free to trade
Closely held shares belong to insiders, founders and owners of more than 5%, and seldom change hands. The free float is the rest: the shares anyone can buy and sell.
The largest shareholders
| # | Holder | Shares | Of the company | Value | Change last quarter (shares) |
|---|---|---|---|---|---|
| 1 | FMR LLC | 5,231,452 | 8.41% | 4.85B USD | +240,418 |
| 2 | Price T Rowe Associates Inc | 2,678,047 | 4.31% | 2.48B USD | -696,908 |
| 3 | Jupiter Topco LLC | 2,474,015 | 3.98% | 2.30B USD | New position |
| 4 | Capital World Investors | 2,199,770 | 3.54% | 2.04B USD | -56,446 |
| 5 | Artisan Partners Limited Partnership | 1,508,778 | 2.43% | 1.40B USD | +40,796 |
| 6 | Avoro Capital Advisors LLC | 1,000,000 | 1.61% | 927.77M USD | 0 |
| 7 | Wellington Management Group LLP | 930,548 | 1.50% | 863.33M USD | -90,909 |
| 8 | BlackRock, Inc. | 777,237 | 1.25% | 721.10M USD | -31,100 |
| 9 | Rtw Investments, LP | 709,446 | 1.14% | 658.20M USD | 0 |
| 10 | Morgan Stanley | 643,123 | 1.03% | 596.67M USD | +82,412 |
| 11 | Invesco Ltd. | 443,990 | 0.71% | 411.92M USD | -150,707 |
| 12 | Bank Of America Corp | 400,234 | 0.64% | 371.33M USD | +117 |
| 13 | Alliancebernstein L.P. | 395,661 | 0.64% | 288.93M USD | -26,643 |
| 14 | Bellevue Group AG | 301,000 | 0.48% | 279.26M USD | -12,000 |
| 15 | Sands Capital Management, LLC | 298,599 | 0.48% | 277.03M USD | -41,686 |
| 16 | Bessemer Group Inc | 267,779 | 0.43% | 248.44M USD | +203,528 |
| 17 | William Blair Investment Management, LLC | 264,617 | 0.43% | 245.49M USD | -1,450 |
| 18 | Sei Investments Co | 255,073 | 0.41% | 236.65M USD | -31,893 |
| 19 | Clearbridge Investments, LLC | 253,776 | 0.41% | 235.45M USD | +22,420 |
| 20 | Jennison Associates LLC | 226,200 | 0.36% | 209.86M USD | -11,268 |
| 21 | Franklin Templeton Inc | 224,930 | 0.36% | 208.68M USD | -8,563 |
| 22 | Citadel Advisors LLC | 212,416 | 0.34% | 197.07M USD | -6,710 |
| 23 | Pictet Asset Management Holding SA | 198,282 | 0.32% | 183.81M USD | +49,976 |
| 24 | Two Sigma Investments, LP | 185,638 | 0.30% | 172.23M USD | +76,517 |
| 25 | Ameriprise Financial Inc | 181,464 | 0.29% | 168.36M USD | -34,446 |
All institutions last quarter
- Bought or added
- 350 · 84 new
- Sold or cut
- 219 · 52 sold out
- Net shares bought
- -564.94K · 524.14M USD
- Institutional ownership
- 47.0% → 46.0%
Biggest buyers last quarter
- Jupiter Topco LLCNew position
- FMR LLC+240,418
- Bessemer Group Inc+203,528
- Barclays PLC+128,927
- Capital Research Global InvestorsNew position
Biggest sellers last quarter
- Price T Rowe Associates Inc-696,908
- Invesco Ltd.-150,707
- Fiera Capital Corp-126,775
- Wellington Management Group LLP-90,909
- Susquehanna International Group, LLP-61,200
From the holders' 13F filings with the SEC for the quarter to 30 Jun 2026, filed up to 45 days after it; the buyers and sellers are among the 100 largest holders.
Common questions about argenx's shareholders
Source: Financial Modeling Prep
