Inhibrx Biosciences, Inc.
INBX- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0002007919
In the last 90 days, Inhibrx Biosciences, Inc. insiders filed 6 open-market purchases and 2 sales; 162 institutions reported holding it in 13F filings for Q2 2026, worth $1.36B in total; Viking Global Investors is the only superinvestor holding it.
13F holders, Q4 2025
Institutional positions in Inhibrx Biosciences, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 138
- +37 vs. Q3 2025
- Shares held
- 12.8M
- +2.32M (+22.2%) vs. Q3 2025
- Total value
- $1.01B
- +$657.3M (+186.6%) vs. Q3 2025
- New holders
- 45
- 38 more added
- Sold out
- 8
- 38 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting INBX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 162 | $1.36B |
| Q1 2026 | 135 | $854.6M |
| Q4 2025 | 138 | $1.01B |
| Q3 2025 | 102 | $353.6M |
| Q2 2025 | 89 | $148.9M |
| Q1 2025 | 92 | $151.0M |
| Q4 2024 | 101 | $171.9M |
| Q3 2024 | 96 | $139.3M |
| Q2 2024 | 88 | $137.9M |
| Q1 2024 | 126 | $1.34B |
| Q4 2023 | 126 | $1.54B |
| Q3 2023 | 111 | $716.1M |
| Q2 2023 | 107 | $935.2M |
| Q1 2023 | 108 | $691.6M |
| Q4 2022 | 116 | $886.0M |
| Q3 2022 | 102 | $512.2M |
| Q2 2022 | 100 | $297.3M |
| Q1 2022 | 99 | $548.0M |
| Q4 2021 | 101 | $1.01B |
| Q3 2021 | 66 | $681.6M |
| Q2 2021 | 61 | $538.8M |
| Q1 2021 | 55 | $326.3M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Inhibrx Biosciences, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 28,393 | $2.24M | 0.00% | −1,366−4.6% | Reduced |
| Franklin Resources Inc | 29,308 | $2.32M | 0.00% | +12,144+70.8% | Added |
| Marshall Wace, LLP | 29,310 | $2.32M | 0.00% | +2,068+7.6% | Added |
| Jane Street Group, LLC | 33,019 | $2.61M | 0.00% | −29,922−47.5% | Reduced |
| ArrowMark Colorado Holdings LLC | 35,176 | $2.78M | 0.06% | 00.0% | Unchanged |
| Laird Norton Trust Company, LLC | 40,382 | $3.19M | 0.07% | +40,382 | New |
| FMR LLC | 46,269 | $3.66M | 0.00% | +6,942+17.7% | Added |
| Renaissance Technologies LLC | 52,600 | $4.16M | 0.01% | +44,200+526.2% | Added |
| Citigroup Inc | 55,759 | $4.40M | 0.00% | +50,788+1,021.7% | Added |
| Bank of America Corp | 69,119 | $5.46M | 0.00% | +51,287+287.6% | Added |
| Kennedy Capital Management, Inc. | 71,488 | $5.65M | 0.12% | −90,421−55.8% | Reduced |
| UBS Group AG | 73,699 | $5.82M | 0.00% | +64,273+681.9% | Added |
| SummitTX Capital, L.P. | 82,885 | $6.55M | 0.20% | +28,742+53.1% | Added |
| Northern Trust Corp | 88,509 | $6.99M | 0.00% | −4,148−4.5% | Reduced |
| Boothbay Fund Management, LLC | 92,009 | $7.27M | 0.19% | +13,197+16.7% | Added |
| Goldman Sachs Group Inc | 100,617 | $7.95M | 0.00% | +74,651+287.5% | Added |
| CDC Financial, Inc. | 110,810 | $8.75M | 8.09% | +110,810 | New |
| Invesco Ltd. | 112,396 | $8.88M | 0.00% | +94,822+539.6% | Added |
| D. E. Shaw & Co., Inc. | 122,101 | $9.65M | 0.01% | +110,548+956.9% | Added |
| Norges Bank | 133,300 | $10.5M | 0.00% | +133,300 | New |
| Woodline Partners LP | 139,479 | $11.0M | 0.04% | −197,111−58.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 214,725 | $17.0M | 0.09% | +117,343+120.5% | Added |
| Geode Capital Management, LLC | 226,009 | $17.9M | 0.00% | +4,089+1.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 264,000 | $20.9M | 0.04% | +264,000 | New |
| PFM Health Sciences, LP | 265,517 | $21.0M | 2.12% | +25,873+10.8% | Added |
| Millennium Management LLC | 275,917 | $21.8M | 0.02% | −21,903−7.4% | Reduced |
| Susquehanna International Group, LLP | 297,116 | $23.5M | 0.03% | +297,116 | New |
| Caligan Partners LP | 323,565 | $25.6M | 2.34% | +87,182+36.9% | Added |
| State Street Corp | 374,961 | $29.6M | 0.00% | +171,038+83.9% | Added |
| Capital Research Global Investors | 421,575 | $33.3M | 0.01% | +421,575 | New |
| Sofinnova Investments, Inc. | 454,657 | $35.9M | 1.55% | +14,565+3.3% | Added |
| Vanguard Group Inc | 623,084 | $49.2M | 0.00% | +28,166+4.7% | Added |
| BlackRock, Inc. | 777,383 | $61.4M | 0.00% | +92,637+13.5% | Added |
| HighTower Advisors, LLC | 870,507 | $68.8M | 0.08% | −1,252−0.1% | Reduced |
| Sanofi | 1,157,926 | $91.5M | 29.47% | 00.0% | Unchanged |
| Morgan Stanley | 1,167,728 | $92.3M | 0.01% | +724,872+163.7% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 1,437,705 | $113.6M | 0.30% | −350,000−19.6% | Reduced |
| Perceptive Advisors LLC | 1,452,707 | $114.8M | 2.10% | +125,000+9.4% | Added |
| Readystate Asset Management LP | 0 | $0 | 0.00% | −170,158−100.0% | Sold out |
| Slotnik Capital, LLC | 0 | $0 | 0.00% | −41,401−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −15,513−100.0% | Sold out |
| HighVista Strategies LLC | 0 | $0 | 0.00% | −7,626−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −7,388−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −6,003−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −250−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −75−100.0% | Sold out |
| Wetherby Asset Management Inc | – | – | – | – | Not filed |