Inhibrx Biosciences Ownership | Who Owns Inhibrx Biosciences?
Inhibrx Biosciences Ownership Summary
Inhibrx Biosciences is owned by 91.98% institutional investors, 23.08% insiders. Morgan stanley is the largest institutional shareholder, holding 8.39% of INBX shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 2.52% of its assets in Inhibrx Biosciences shares.
INBX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Inhibrx Biosciences | 91.98% | 23.08% | -15.07% |
| Sector | Healthcare Stocks | 246.48% | 12.12% | -158.60% |
| Industry | Biotech Stocks | 384.82% | 11.76% | -296.58% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Morgan stanley | 1.31M | 8.39% | $123.94M |
| Perceptive advisors | 1.30M | 8.33% | $122.96M |
| Sanofi | 1.16M | 7.43% | $109.71M |
| Viking global investors lp | 1.12M | 7.21% | $106.49M |
| Hightower advisors | 870.55K | 5.59% | $82.48M |
| Bank of america corp /de/ | 841.14K | 5.40% | $79.70M |
| Blackrock funding, inc. /de | 825.97K | 5.30% | $78.26M |
| Schonfeld strategic advisors | 697.59K | 4.48% | $66.10M |
| State street | 640.46K | 4.11% | $60.68M |
| Vanguard group | 623.08K | 4.03% | $49.22M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Sanofi | 1.16M | 20.54% | $109.71M |
| Pfm health sciences, lp | 308.38K | 2.51% | $29.22M |
| Parkman healthcare partners | 256.95K | 2.49% | $24.35M |
| Perceptive advisors | 1.30M | 1.85% | $122.96M |
| First turn management | 164.78K | 1.67% | $15.61M |
| Cannon global investment management | 5.90K | 1.58% | $559.02K |
| Western standard | 47.00K | 1.51% | $4.45M |
| Sofinnova investments | 303.10K | 1.48% | $28.72M |
| Hussman strategic advisors | 31.50K | 0.69% | $2.98M |
| Viking global investors lp | 1.12M | 0.30% | $106.49M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bank of america corp /de/ | 841.14K | 0.01% | 808.46K |
| Schonfeld strategic advisors | 697.59K | 0.24% | 442.76K |
| Parkman healthcare partners | 256.95K | 2.49% | 256.95K |
| Goldman sachs group | 338.18K | 0.00% | 243.10K |
| First turn management | 164.78K | 1.67% | 164.78K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | - | - | -2.75M |
| Ra capital management | - | - | -2.63M |
| Tcg crossover management | - | - | -1.75M |
| Alpine associates management | - | - | -1.05M |
| Tang capital management | - | - | -700.00K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Parkman healthcare partners | 256.95K | 2.49% | 256.95K | $24.35M |
| First turn management | 164.78K | 1.67% | 164.78K | $15.61M |
| First trust advisors lp | 128.42K | 0.01% | 128.42K | $12.17M |
| Norges bank | 90.30K | 0.00% | 90.30K | $8.56M |
| Eventide asset management | 61.55K | 0.08% | 61.55K | $5.83M |
Sold Out
| Holder | Change |
|---|---|
| Financial gravity asset management | -2.00 |
| Ifp advisors | -4.00 |
| Jones financial companies lllp | -4.00 |
| True wealth design | -4.00 |
| Eastern bank | -5.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 175 | 19.05% | 14,335,338 | 12.75% | 91 | 1.38% | 106 | 35.90% | 42 | 16.67% |
| Mar 31, 2026 | 143 | -7.74% | 12,680,697 | -0.76% | 81 | 1.20% | 76 | -10.59% | 34 | -15.00% |
| Dec 31, 2025 | 67 | -36.19% | 4,787,060 | -54.40% | 30 | 0.67% | 38 | -19.15% | 14 | -61.11% |
| Sep 30, 2025 | 40 | -54.02% | 3,943,558 | -62.21% | 25 | 0.56% | 11 | -64.52% | 14 | -58.82% |
| Jun 30, 2025 | 86 | -10.42% | 10,434,307 | -3.62% | 67 | 1.38% | 30 | 3.45% | 34 | -5.56% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 369.64K | 2.52% | - |
| Vanguard Total Stock Mkt Idx Inv | 369.64K | 2.52% | - |
| Vanguard MStar Total Stk Mkt Idx Invest | 369.64K | 2.51% | - |
| American Funds SMALLCAP World A | 353.29K | 2.40% | - |
| State Street® SPDR® S&P® Biotech ETF | 326.92K | 2.22% | -6.25K |
| iShares Russell 2000 ETF | 247.84K | 1.68% | -2.88K |
| Vanguard Institutional Extnd Mkt Idx Tr | 111.10K | 0.76% | 195.00 |
| Fidelity Small Cap Index | 103.94K | 0.71% | 929.00 |
| iShares Biotechnology ETF | 85.74K | 0.58% | -648.00 |
| First Trust Small Cap Gr AlphaDEX® ETF | 81.24K | 0.55% | 144.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | $207.65K |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | $8.58K |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | $8.58K |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | $209.95K |
| Oct 14, 2026 | Lappe Mark | Chief Executive Officer | Buy | $208.33K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q4 | 6 | - |
| 2026 Q3 | 14 | 5 |
| 2026 Q2 | - | - |
| 2025 Q4 | - | 3 |
| 2025 Q2 | - | - |
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