Who owns Inhibrx Biosciences (INBX)
Which tracked institutional funds hold INBX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See INBX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on INBX is one-sided between 2026-Q1 and 2026-Q2: 69 added or opened and 17 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
INBX’s largest tracked holder by dollar value, MORGAN STANLEY, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in INBX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 157 tracked filers holding INBX, 103 increased or opened the position and 66 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in INBX between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 21
- Parkman Healthcare Partners LLC$24M
- First Turn Management, LLC$16M
- FIRST TRUST ADVISORS LP$12M
- NORGES BANK$9M
- EVENTIDE ASSET MANAGEMENT, LLC$6M
- Western Standard LLC$4M
Full exits 8
- HighTower Advisors, LLC$59M
- Soleus Capital Management, L.P.$9M
- KENNEDY CAPITAL MANAGEMENT LLC$5M
- CITADEL ADVISORS LLC$2M
- Jump Financial, LLC$2M
- Centiva Capital, LP$1M
Largest adds
- BANK OF AMERICA CORP /DE/$78M
- Schonfeld Strategic Advisors LLC$49M
- MORGAN STANLEY$39M
- Sanofi$32M
- PERCEPTIVE ADVISORS LLC$26M
- GOLDMAN SACHS GROUP INC$26M
Largest trims
- MILLENNIUM MANAGEMENT LLC$8M
- SummitTX Capital, L.P.$8M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$5M
- FMR LLC$3M
- D. E. Shaw & Co., Inc.$3M
- ExodusPoint Capital Management, LP$2M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MORGAN STANLEY added | 1,308,051 | $124M | 9.8% | 2026-Q2 |
| PERCEPTIVE ADVISORS LLC trimmed | 1,297,763 | $123M | 9.7% | 2026-Q2 |
| Sanofi | 1,157,926 | $110M | 8.7% | 2026-Q2 |
| VIKING GLOBAL INVESTORS LP trimmed | 1,123,929 | $106M | 8.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 841,141 | $80M | 6.3% | 2026-Q2 |
| BlackRock, Inc. added | 825,972 | $78M | 6.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 697,586 | $66M | 5.2% | 2026-Q2 |
| STATE STREET CORP added | 640,458 | $61M | 4.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 492,477 | $47M | 3.7% | 2026-Q2 |
| Woodline Partners LP added | 400,892 | $38M | 3.0% | 2026-Q2 |
| Capital Research Global Investors trimmed | 363,050 | $34M | 2.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 338,176 | $32M | 2.5% | 2026-Q2 |
| PFM Health Sciences, LP added | 308,385 | $29M | 2.3% | 2026-Q2 |
| Sofinnova Investments, Inc. trimmed | 303,103 | $29M | 2.3% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 271,700 | $26M | 2.0% | 2026-Q2 |
| Parkman Healthcare Partners LLC new | 256,950 | $24M | 1.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 256,175 | $24M | 1.9% | 2026-Q2 |
| First Turn Management, LLC new | 164,783 | $16M | 1.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 147,200 | $14M | 1.1% | 2026-Q2 |
| CDC Financial, Inc. added | 140,130 | $13M | 1.0% | 2026-Q2 |
| FIRST TRUST ADVISORS LP new | 128,424 | $12M | 1.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 122,557 | $12M | 0.9% | 2026-Q2 |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC trimmed | 119,200 | $11M | 0.9% | 2026-Q2 |
| NORTHERN TRUST CORP added | 100,957 | $10M | 0.8% | 2026-Q2 |
| NORGES BANK trimmed | 90,300 | $9M | 0.7% | 2026-Q2 |
| CITIGROUP INC added | 75,721 | $7M | 0.6% | 2026-Q2 |
| Jefferies Financial Group Inc. added | 73,416 | $7M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 69,920 | $7M | 0.5% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 62,201 | $6M | 0.5% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC new | 61,545 | $6M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 59,841 | $6M | 0.4% | 2026-Q2 |
| Voleon Capital Management LP added | 58,358 | $6M | 0.4% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 48,765 | $5M | 0.4% | 2026-Q2 |
| Western Standard LLC new | 47,000 | $4M | 0.4% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 36,443 | $3M | 0.3% | 2026-Q2 |
| ArrowMark Colorado Holdings LLC | 35,176 | $3M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 35,019 | $3M | 0.3% | 2026-Q2 |
| HUSSMAN STRATEGIC ADVISORS, INC. new | 31,500 | $3M | 0.2% | 2026-Q2 |
| Empyrean Capital Partners, LP new | 30,000 | $3M | 0.2% | 2026-Q2 |
| Atom Investors LP added | 29,594 | $3M | 0.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 28,678 | $3M | 0.2% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 28,653 | $3M | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 26,200 | $2M | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. new | 26,011 | $2M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 25,209 | $2M | 0.2% | 2026-Q2 |
| Informed Momentum Co LLC new | 23,077 | $2M | 0.2% | 2026-Q2 |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 22,584 | $2M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 22,322 | $2M | 0.2% | 2026-Q2 |
| Nicholas Investment Partners, LP new | 21,443 | $2M | 0.2% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 21,421 | $2M | 0.2% | 2026-Q2 |
| Opaleye Management Inc. new | 20,291 | $2M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 20,067 | $2M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 18,658 | $2M | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 18,363 | $2M | 0.1% | 2026-Q2 |
| Verition Fund Management LLC new | 17,993 | $2M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP trimmed | 17,396 | $2M | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 17,272 | $2M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 16,858 | $2M | 0.1% | 2026-Q2 |
| Ratan Capital Management LP new | 16,612 | $2M | 0.1% | 2026-Q2 |
| SummitTX Capital, L.P. trimmed | 15,251 | $1M | 0.1% | 2026-Q2 |
| Swiss National Bank trimmed | 13,900 | $1M | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 13,343 | $1M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 12,056 | $1M | 0.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 11,247 | $1M | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 11,148 | $1M | 0.1% | 2026-Q2 |
| Tidal Investments LLC new | 10,170 | $964K | 0.1% | 2026-Q2 |
| Tema ETFs LLC new | 10,170 | $964K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 9,650 | $649K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 9,579 | $908K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 9,563 | $906K | 0.1% | 2026-Q2 |
| Ethic Inc. trimmed | 9,345 | $885K | 0.1% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 8,800 | $834K | 0.1% | 2026-Q2 |
| Meridian Wealth Advisors, LLC trimmed | 8,500 | $805K | 0.1% | 2026-Q2 |
| NOMURA HOLDINGS INC new | 8,000 | $758K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 7,812 | $741K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 7,747 | $734K | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP new | 7,649 | $725K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 7,402 | $701K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 6,543 | $620K | 0.0% | 2026-Q2 |
| Creative Planning trimmed | 6,514 | $617K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 6,326 | $599K | 0.0% | 2026-Q2 |
| PLATINUM INVESTMENT MANAGEMENT LTD new | 6,146 | $582K | 0.0% | 2026-Q2 |
| Cannon Global Investment Management, LLC new | 5,900 | $559K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 5,675 | $539K | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC added | 5,638 | $534K | 0.0% | 2026-Q2 |
| PROFUND ADVISORS LLC trimmed | 5,620 | $532K | 0.0% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 5,612 | $532K | 0.0% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 5,378 | $510K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 5,260 | $502K | 0.0% | 2026-Q2 |
| Legal & General Group Plc added | 5,138 | $487K | 0.0% | 2026-Q2 |
| Persium Advisors, LLC new | 4,875 | $462K | 0.0% | 2026-Q2 |
| Dynamic Advisor Solutions LLC new | 4,824 | $457K | 0.0% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 4,799 | $455K | 0.0% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. new | 4,728 | $448K | 0.0% | 2026-Q2 |
| Mariner, LLC trimmed | 4,569 | $433K | 0.0% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM added | 4,276 | $405K | 0.0% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 4,206 | $399K | 0.0% | 2026-Q2 |
| MACQUARIE GROUP LTD new | 4,000 | $379K | 0.0% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 4,000 | $379K | 0.0% | 2026-Q2 |
| LANARK FINANCIAL, INC. added | 3,900 | $370K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.