ARGX Institutional Ownership
Who owns Argenx SE and what the big funds did with it last quarter, from every SEC 13F filing. 512 funds reported holding ARGX at Jun 30, 2026.
- ▲258 buying vs 212 selling
- ▼Shares held by funds -1.9%
- ▲Funds holding +31
- ▲Superinvestors: 3 added, 1 cut
- ▼Put/call 0.13 to 0.14
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 512 | 481 | +6.4% |
| In funds' top 10 | 13 | 12 | +8.3% |
| 13F shares | 28.3M | 28.8M | −1.9% |
| Held by funds | – | – | – |
| New positions | 80 | 58 | +37.9% |
| Increased | 178 | 177 | +0.6% |
| Reduced | 164 | 173 | −5.2% |
| Sold out | 48 | 89 | −46.1% |
| Calls (shares) | 84K | 125K | −33.3% |
| Puts (shares) | 12K | 16K | −26.4% |
| Put/call ratio | 0.14 | 0.13 | +10.2% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ARGX
All superinvestors →
Who owns ARGX
share of fund held shares- Index and passive funds5.9%
- Active managers and hedge funds84.2%
- Banks and brokers9.0%
- Pensions, insurers and other0.8%
The top 10 holders own 64.2% of all ARGX shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
139 funds changed their position- CenterBook Partners LPAdded+12K sh
- Gunderson Capital Management LLCNew+6,078 sh
- iA Global Asset Management Inc.Trimmed−5,222 sh
- Y-Intercept (Hong Kong) LtdNew+3,992 sh
- Assenagon Asset Management S.A.Added+3,355 sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Fmr LLC | – | 5.2M | $4.9B | +240K |
| 2 | Price T Rowe Associates Inc /md/ | – | 2.7M | $2.5B | −697K |
| 3 | Jupiter Topco LLC | – | 2.5M | $2.3B | – |
| 4 | Capital World Investors | – | 2.2M | $2B | −56K |
| 5 | Artisan Partners Limited Partnership | – | 1.5M | $1.4B | +41K |
| 6 | Avoro Capital Advisors LLC | – | 1M | $928M | 0 |
| 7 | Wellington Management Group LLP | – | 931K | $863M | −91K |
| 8 | BlackRock, Inc. | – | 777K | $721M | −31K |
| 9 | Rtw Investments, LP | – | 709K | $658M | 0 |
| 10 | Morgan Stanley | – | 643K | $597M | +82K |
- Fmr LLC+240K sh+$223M
- Bessemer Group Inc+204K sh+$189M
- Barclays PLC+129K sh+$120M
- Capital Research Global Investors+89K sh+$82.1M
- Morgan Stanley+82K sh+$76.5M
- Two Sigma Investments, LP+77K sh+$71M
- 1832 Asset Management L.P.+74K sh+$68.4M
- Canada Pension Plan Investment Board+61K sh+$56.2M
- Price T Rowe Associates Inc /md/−697K sh−$647M
- Invesco Ltd.−151K sh−$140M
- Fiera Capital Corp−127K sh−$118M
- Wellington Management Group LLP−91K sh−$84.3M
- Braidwell LP−67K sh−$62.4M
- Capital World Investors−56K sh−$52.4M
- TD Asset Management Inc−56K sh−$52.1M
- Goldman Sachs Group Inc−54K sh−$50.2M
ARGX institutional ownership FAQ
Who owns the most ARGX stock?
In Q2 2026 13F filings the largest holder of ARGX was Fmr LLC, followed by Price T Rowe Associates Inc /md/ and Jupiter Topco LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ARGX is owned by institutions?
512 funds reported holding 28.3M ARGX shares at Jun 30, 2026.
Are hedge funds buying ARGX?
In Q2 2026, 258 funds bought ARGX (80 of them new positions) and 212 sold (48 sold out completely). Among well known investors, 3 added and 1 cut. Our fund sentiment for ARGX is neutral.
What is ARGX's institutional put/call ratio?
Funds reported $10.9M of ARGX puts against $77.7M of calls, a put/call ratio of 0.14 (0.13 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this ARGX ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.