argenx
ARGX
447 hedge funds and large institutions have $19.7B invested in argenx in 2025 Q1 according to their latest regulatory filings, with 83 funds opening new positions, 158 increasing their positions, 149 reducing their positions, and 27 closing their positions.
207% more first-time investments, than exits
New positions opened: 83 | Existing positions closed: 27
84% more call options, than puts
Call options by funds: $319M | Put options by funds: $174M
13% more funds holding
Funds holding: 397 → 447 (+50)
6% more repeat investments, than reductions
Existing positions increased: 158 | Existing positions reduced: 149
0% more funds holding in top 10
Funds holding in top 10: 18 → 18 (0)
1.63% less ownership
Funds ownership: 56.53% → 54.9% (-1.6%)
6% less capital invested
Capital invested by funds: $21B → $19.7B (-$1.26B)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$129M |
| 2 |
Capital World Investors
Los Angeles,
California
|
+$95.3M |
| 3 |
BNP Paribas Financial Markets
Paris,
France
|
+$77.7M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$51.9M |
| 5 |
Bank of America
Charlotte,
North Carolina
|
+$51.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PBA
Paradigm Biocapital Advisors
New York
|
-$266M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$257M |
| 3 |
Artisan Partners
Milwaukee,
Wisconsin
|
-$179M |
| 4 |
Janus Henderson Group
London,
|
-$107M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
-$91M |
ARGX Hedge Fund Activity: Q1 2025 in Review
447 of the 7,471 institutional investors tracked by Wall St. Rank reported a position in argenx (ARGX) for Q1 2025, worth a combined $19.7B — down 6% from $21B a quarter earlier.
Buyers outnumbered sellers: 83 funds opened new ARGX positions and 27 closed out — a net gain of 56 holders — while 158 added to existing stakes and 149 trimmed.
The largest buyer was Millennium Management, adding an estimated $129M. The largest seller was Paradigm Biocapital Advisors, cutting an estimated $266M.
- 447 institutional investors held argenx (ARGX) as of Q1 2025, up from 397 in Q4 2024.
- Funds reported $19.7B of argenx stock for Q1 2025, down 6% quarter-over-quarter.
- 83 funds opened new argenx positions in Q1 2025 and 27 closed out, a net change of +56 holders.
- The largest argenx buyer in Q1 2025 was Millennium Management, an estimated $129M added.
- The largest argenx seller in Q1 2025 was Paradigm Biocapital Advisors, an estimated $266M sold.
Based on aggregated 13F filings for Q1 2025.