Y-mAbs Therapeutics, Inc.
YMABDelisted Sep 16, 2025- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001722964
Y-mAbs Therapeutics, Inc. was delisted on Sep 16, 2025; its insiders filed their last Form 4 on Sep 19, 2025; 97 institutions reported holding it in 13F filings for Q2 2025, worth $125.9M in total; no superinvestor held it.
13F holders, Q3 2021
Institutional positions in Y-mAbs Therapeutics, Inc. as of Sep 30, 2021. 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
- 97
- −3 vs. Q2 2021
- Shares held
- 26.2M
- +102.8K (+0.4%) vs. Q2 2021
- Total value
- $749.0M
- −$137.9M (−15.5%) vs. Q2 2021
- New holders
- 10
- 41 more added
- Sold out
- 13
- 29 more reduced
Compare with Q2 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting YMAB 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 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 2 | $78.3K |
| Q2 2025 | 97 | $125.9M |
| Q1 2025 | 103 | $127.6M |
| Q4 2024 | 113 | $225.5M |
| Q3 2024 | 105 | $338.5M |
| Q2 2024 | 96 | $294.2M |
| Q1 2024 | 96 | $374.0M |
| Q4 2023 | 94 | $138.0M |
| Q3 2023 | 99 | $107.3M |
| Q2 2023 | 95 | $132.4M |
| Q1 2023 | 86 | $95.4M |
| Q4 2022 | 91 | $94.2M |
| Q3 2022 | 100 | $339.7M |
| Q2 2022 | 91 | $374.7M |
| Q1 2022 | 88 | $300.6M |
| Q4 2021 | 97 | $417.1M |
| Q3 2021 | 97 | $749.0M |
| Q2 2021 | 100 | $886.9M |
| Q1 2021 | 117 | $804.8M |
Institutions, Q3 2021
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 4,278,097 | $122.1M | 0.02% | −170,513−3.8% | Reduced |
| BlackRock Inc. | 2,736,860 | $78.1M | 0.00% | +33,169+1.2% | Added |
| Sofinnova Investments, Inc. | 2,194,278 | $62.6M | 4.01% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,803,924 | $51.5M | 0.00% | +168,669+10.3% | Added |
| Artisan Partners Limited Partnership | 1,688,556 | $48.2M | 0.06% | +370,277+28.1% | Added |
| FMR LLC | 1,525,787 | $43.5M | 0.00% | −23,200−1.5% | Reduced |
| Alliancebernstein L.P. | 1,417,809 | $40.5M | 0.02% | +69,213+5.1% | Added |
| State Street Corp | 1,331,943 | $38.0M | 0.00% | −57,568−4.1% | Reduced |
| Polar Capital Holdings Plc | 1,154,961 | $33.0M | 0.18% | +569,040+97.1% | Added |
| Goldman Sachs Group Inc | 813,355 | $23.2M | 0.01% | −7,127−0.9% | Reduced |
| First Light Asset Management, LLC | 577,663 | $16.5M | 1.09% | −372,529−39.2% | Reduced |
| Geode Capital Management, LLC | 577,111 | $16.5M | 0.00% | +26,064+4.7% | Added |
| Cormorant Asset Management, LP | 500,000 | $14.3M | 0.58% | −300,000−37.5% | Reduced |
| MPM Oncology Impact Management LP | 452,970 | $12.9M | 2.01% | +115,679+34.3% | Added |
| Ashford Capital Management Inc | 452,110 | $12.9M | 1.17% | −131,398−22.5% | Reduced |
| Artal Group S.A. | 400,000 | $11.4M | 0.28% | 00.0% | Unchanged |
| Lombard Odier Asset Management (Switzerland) SA | 352,839 | $10.1M | 0.63% | +32,807+10.3% | Added |
| Northern Trust Corp | 347,034 | $9.90M | 0.00% | +628+0.2% | Added |
| Oracle Investment Management Inc | 315,642 | $9.01M | 1.13% | +15,000+5.0% | Added |
| New York State Common Retirement Fund | 301,998 | $8.62M | 0.01% | +60,228+24.9% | Added |
| Soleus Capital Management, L.P. | 265,700 | $7.58M | 1.18% | +121,400+84.1% | Added |
| Charles Schwab Investment Management Inc | 239,619 | $6.84M | 0.00% | +37,500+18.6% | Added |
| Memorial Sloan Kettering Cancer Center | 216,916 | $6.19M | 3.86% | 00.0% | Unchanged |
| Brookfield Asset Management Inc. | 179,236 | $5.12M | 0.02% | +12,582+7.5% | Added |
| Candriam Luxembourg S.C.A. | 178,181 | $5.08M | 0.03% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 140,213 | $4.00M | 0.00% | −21,412−13.2% | Reduced |
| Dimensional Fund Advisors LP | 125,522 | $3.58M | 0.00% | +125,522 | New |
| Citadel Advisors LLC | 104,515 | $2.98M | 0.00% | −70,670−40.3% | Reduced |
| Bank of New York Mellon Corp | 103,634 | $2.96M | 0.00% | +12,008+13.1% | Added |
| Rice Hall James & Associates, LLC | 99,291 | $2.83M | 0.10% | +2,517+2.6% | Added |
| Morgan Stanley | 84,006 | $2.40M | 0.00% | −8,160−8.9% | Reduced |
| Bank of America Corp | 80,264 | $2.29M | 0.00% | −2,306−2.8% | Reduced |
| Swiss National Bank | 57,300 | $1.64M | 0.00% | 00.0% | Unchanged |
| Alps Advisors Inc | 53,409 | $1.52M | 0.01% | −3,977−6.9% | Reduced |
| Two Sigma Advisers, LP | 49,000 | $1.40M | 0.00% | −86,300−63.8% | Reduced |
| Maven Securities LTD | 48,759 | $1.39M | 0.16% | −54,041−52.6% | Reduced |
| Wells Fargo & Company | 42,123 | $1.20M | 0.00% | +25,523+153.8% | Added |
| State of Wisconsin Investment Board | 41,000 | $1.17M | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 40,585 | $1.16M | 0.01% | −5,120−11.2% | Reduced |
| California State Teachers Retirement System | 40,232 | $1.15M | 0.00% | −7,945−16.5% | Reduced |
| Vident Investment Advisory, LLC | 38,835 | $1.11M | 0.03% | −2,774−6.7% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 37,900 | $1.08M | 0.01% | +36,900+3,690.0% | Added |
| Allianz Asset Management GmbH | 37,354 | $1.07M | 0.00% | +83+0.2% | Added |
| Rhumbline Advisers | 37,022 | $1.06M | 0.00% | +2,001+5.7% | Added |
| Russell Investments Group, Ltd. | 36,280 | $1.03M | 0.00% | +33,304+1,119.1% | Added |
| JPMorgan Chase & Co | 35,880 | $1.02M | 0.00% | +461+1.3% | Added |
| Brandywine Global Investment Management, LLC | 32,537 | $929.0K | 0.01% | +32,537 | New |
| Citigroup Inc | 31,756 | $906.0K | 0.00% | −41,546−56.7% | Reduced |
| Susquehanna International Group, LLP | 26,579 | $759.0K | 0.00% | +10,632+66.7% | Added |
| SG Americas Securities, LLC | 25,810 | $737.0K | 0.00% | +374+1.5% | Added |
| Teachers Retirement System of the State of Kentucky | 25,674 | $733.0K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 25,559 | $729.0K | 0.00% | +24,207+1,790.5% | Added |
| SEI Investments Co | 25,091 | $716.0K | 0.00% | +5,140+25.8% | Added |
| UBS Asset Management Americas Inc | 23,419 | $668.4K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 22,857 | $653.0K | 0.00% | −5,142−18.4% | Reduced |
| American International Group, Inc. | 19,128 | $546.0K | 0.00% | −454−2.3% | Reduced |
| Manufacturers Life Insurance Company, The | 18,856 | $538.0K | 0.00% | −1,341−6.6% | Reduced |
| Jane Street Group, LLC | 18,311 | $523.0K | 0.00% | +18,311 | New |
| Barclays PLC | 17,469 | $498.0K | 0.00% | +10,615+154.9% | Added |
| ExodusPoint Capital Management, LP | 17,399 | $497.0K | 0.01% | +399+2.3% | Added |
| Credit Suisse AG | 16,942 | $483.0K | 0.00% | +1,375+8.8% | Added |
| Invesco Ltd. | 16,429 | $469.0K | 0.00% | +2,563+18.5% | Added |
| Principal Financial Group Inc | 15,971 | $455.0K | 0.00% | +5,935+59.1% | Added |
| Royal Bank of Canada | 15,560 | $444.0K | 0.00% | +690+4.6% | Added |
| Cubist Systematic Strategies, LLC | 14,884 | $425.0K | 0.01% | +14,884 | New |
| ProShare Advisors LLC | 13,787 | $393.0K | 0.00% | −3,107−18.4% | Reduced |
| Cna Financial Corp | 13,760 | $393.0K | 0.11% | +470+3.5% | Added |
| Voya Investment Management LLC | 13,702 | $391.0K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 13,415 | $382.9K | 0.00% | 00.0% | Unchanged |
| Virtus ETF Advisers LLC | 12,578 | $359.0K | 0.16% | −1,150−8.4% | Reduced |
| DnB Asset Management AS | 12,566 | $358.6K | 0.00% | −249−1.9% | Reduced |
| DekaBank Deutsche Girozentrale | 12,700 | $355.0K | 0.00% | 00.0% | Unchanged |
| Parametric Portfolio Associates LLC | 11,051 | $315.0K | 0.00% | −36,423−76.7% | Reduced |
| State Board of Administration of Florida Retirement System | 11,019 | $314.0K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,914 | $282.0K | 0.00% | +5,083+105.2% | Added |
| Erste Asset Management GmbH | 10,000 | $279.2K | 0.01% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 9,573 | $273.2K | 0.00% | +140+1.5% | Added |
| Allstate Corp | 9,394 | $268.0K | 0.01% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 7,682 | $219.0K | 0.01% | −253−3.2% | Reduced |
| Arizona State Retirement System | 7,121 | $203.0K | 0.00% | +56+0.8% | Added |
| BNP Paribas Arbitrage, SA | 6,449 | $184.1K | 0.00% | +4,921+322.1% | Added |
| Ensign Peak Advisors, Inc | 6,043 | $172.0K | 0.00% | −16,555−73.3% | Reduced |
| Ameritas Investment Partners, Inc. | 2,645 | $75.0K | 0.00% | 00.0% | Unchanged |
| First Mercantile Trust Co | 2,350 | $67.0K | 0.01% | −95−3.9% | Reduced |
| Tower Research Capital LLC (TRC) | 2,243 | $64.0K | 0.00% | +448+25.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,868 | $53.0K | 0.00% | +1,868 | New |
| Lazard Asset Management LLC | 1,801 | $51.0K | 0.00% | +1,801 | New |
| Migdal Insurance & Financial Holdings Ltd. | 1,720 | $49.0K | 0.00% | +1,720 | New |
| Great West Life Assurance Co | 1,443 | $41.0K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 1,103 | $31.0K | 0.02% | −178−13.9% | Reduced |
| Penserra Capital Management LLC | 995 | $28.0K | 0.00% | +5+0.5% | Added |
| Point72 Hong Kong Ltd | 995 | $28.0K | 0.00% | +995 | New |
| Quantbot Technologies LP | 600 | $17.0K | 0.00% | +600 | New |
| Macquarie Group Ltd | 471 | $13.0K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 149 | $4.00K | 0.00% | +73+96.1% | Added |
| TCI Wealth Advisors, Inc. | 89 | $3.00K | 0.00% | +27+43.5% | Added |
| Eagle Bay Advisors LLC | 50 | $1.00K | 0.00% | +50 | New |
| Tekla Capital Management LLC | 0 | $0 | 0.00% | −197,820−100.0% | Sold out |
| Burrage Capital Management LLC | 0 | $0 | 0.00% | −114,454−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −46,228−100.0% | Sold out |