Inhibrx
INBX
138 hedge funds and large institutions have $1.01B invested in Inhibrx in 2025 Q4 according to their latest regulatory filings, with 45 funds opening new positions, 38 increasing their positions, 38 reducing their positions, and 8 closing their positions.
463% more first-time investments, than exits
New positions opened: 45 | Existing positions closed: 8
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
186% more capital invested
Capital invested by funds: $354M → $1.01B (+$656M)
35% more funds holding
Funds holding: 102 → 138 (+36)
23% more call options, than puts
Call options by funds: $54.8M | Put options by funds: $44.6M
15.39% more ownership
Funds ownership: 72.47% → 87.86% (+15%)
0% more repeat investments, than reductions
Existing positions increased: 38 | Existing positions reduced: 38
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$49.4M |
| 2 |
Capital Research Global Investors
Los Angeles,
California
|
+$28.7M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$20.2M |
| 4 |
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Toronto,
Ontario, Canada
|
+$18M |
| 5 |
State Street
Boston,
Massachusetts
|
+$11.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Viking Global Investors
Stamford,
Connecticut
|
-$23.8M |
| 2 |
WP
Woodline Partners
San Francisco,
California
|
-$13.4M |
| 3 |
KCM
Kennedy Capital Management
St Louis,
Missouri
|
-$6.16M |
| 4 |
RAM
Readystate Asset Management
Chicago,
Illinois
|
-$5.73M |
| 5 |
GLF
Groupe la Francaise
Paris,
France
|
-$2.16M |
INBX Hedge Fund Activity: Q4 2025 in Review
138 of the 8,270 institutional investors tracked by Wall St. Rank reported a position in Inhibrx (INBX) for Q4 2025, worth a combined $1.01B — up 186% from $354M a quarter earlier.
Buyers outnumbered sellers: 45 funds opened new INBX positions and 8 closed out — a net gain of 37 holders — while 38 added to existing stakes and 38 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $49.4M. The largest seller was Viking Global Investors, cutting an estimated $23.8M.
- 138 institutional investors held Inhibrx (INBX) as of Q4 2025, up from 102 in Q3 2025.
- Funds reported $1.01B of Inhibrx stock for Q4 2025, up 186% quarter-over-quarter.
- 45 funds opened new Inhibrx positions in Q4 2025 and 8 closed out, a net change of +37 holders.
- The largest Inhibrx buyer in Q4 2025 was Morgan Stanley, an estimated $49.4M added.
- The largest Inhibrx seller in Q4 2025 was Viking Global Investors, an estimated $23.8M sold.
Based on aggregated 13F filings for Q4 2025.