argenx
ARGX
469 hedge funds and large institutions have $22.5B invested in argenx in 2025 Q3 according to their latest regulatory filings, with 91 funds opening new positions, 178 increasing their positions, 136 reducing their positions, and 57 closing their positions.
114% more call options, than puts
Call options by funds: $542M | Put options by funds: $253M
60% more first-time investments, than exits
New positions opened: 91 | Existing positions closed: 57
31% more repeat investments, than reductions
Existing positions increased: 178 | Existing positions reduced: 136
27% more capital invested
Capital invested by funds: $17.7B → $22.5B (+$4.81B)
7% more funds holding
Funds holding: 438 → 469 (+31)
2.73% less ownership
Funds ownership: 52.6% → 49.87% (-2.7%)
18% less funds holding in top 10
Funds holding in top 10: 17 → 14 (-3)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$214M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$177M |
| 3 |
Two Sigma Investments
New York
|
+$165M |
| 4 |
WP
Woodline Partners
San Francisco,
California
|
+$85.2M |
| 5 |
Two Sigma Advisers
New York
|
+$82.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$883M |
| 2 |
Adage Capital Partners
Boston,
Massachusetts
|
-$164M |
| 3 |
ACA
Avoro Capital Advisors
New York
|
-$122M |
| 4 |
Marshall Wace
London,
United Kingdom
|
-$109M |
| 5 |
Artisan Partners
Milwaukee,
Wisconsin
|
-$108M |
ARGX Hedge Fund Activity: Q3 2025 in Review
469 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in argenx (ARGX) for Q3 2025, worth a combined $22.5B — up 27% from $17.7B a quarter earlier.
Buyers outnumbered sellers: 91 funds opened new ARGX positions and 57 closed out — a net gain of 34 holders — while 178 added to existing stakes and 136 trimmed.
The largest buyer was Wellington Management Group, adding an estimated $214M. The largest seller was T. Rowe Price Associates, cutting an estimated $883M.
- 469 institutional investors held argenx (ARGX) as of Q3 2025, up from 438 in Q2 2025.
- Funds reported $22.5B of argenx stock for Q3 2025, up 27% quarter-over-quarter.
- 91 funds opened new argenx positions in Q3 2025 and 57 closed out, a net change of +34 holders.
- The largest argenx buyer in Q3 2025 was Wellington Management Group, an estimated $214M added.
- The largest argenx seller in Q3 2025 was T. Rowe Price Associates, an estimated $883M sold.
Based on aggregated 13F filings for Q3 2025.