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, Q4 2021
Institutional positions in Y-mAbs Therapeutics, Inc. as of Dec 31, 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
- +1 vs. Q3 2021
- Shares held
- 25.7M
- −507.1K (−1.9%) vs. Q3 2021
- Total value
- $417.1M
- −$331.8M (−44.3%) vs. Q3 2021
- New holders
- 16
- 38 more added
- Sold out
- 15
- 28 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 4,271,382 | $69.2M | 0.01% | −6,715−0.2% | Reduced |
| BlackRock Inc. | 2,767,360 | $44.9M | 0.00% | +30,500+1.1% | Added |
| Sofinnova Investments, Inc. | 2,194,278 | $35.6M | 2.28% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 1,942,334 | $31.5M | 0.01% | +524,525+37.0% | Added |
| Vanguard Group Inc | 1,817,074 | $29.5M | 0.00% | +13,150+0.7% | Added |
| Artisan Partners Limited Partnership | 1,581,845 | $25.6M | 0.03% | −106,711−6.3% | Reduced |
| FMR LLC | 1,525,787 | $24.7M | 0.00% | 00.0% | Unchanged |
| State Street Corp | 1,456,670 | $23.6M | 0.00% | +124,727+9.4% | Added |
| Polar Capital Holdings Plc | 1,377,671 | $22.3M | 0.12% | +222,710+19.3% | Added |
| Geode Capital Management, LLC | 620,977 | $10.1M | 0.00% | +43,866+7.6% | Added |
| MPM Oncology Impact Management LP | 446,457 | $7.24M | 1.32% | −6,513−1.4% | Reduced |
| Artal Group S.A. | 400,000 | $6.48M | 0.19% | 00.0% | Unchanged |
| Lombard Odier Asset Management (Switzerland) SA | 385,440 | $6.25M | 0.40% | +32,601+9.2% | Added |
| Northern Trust Corp | 343,987 | $5.58M | 0.00% | −3,047−0.9% | Reduced |
| Soleus Capital Management, L.P. | 310,494 | $5.03M | 0.68% | +44,794+16.9% | Added |
| Cormorant Asset Management, LP | 300,000 | $4.86M | 0.29% | −200,000−40.0% | Reduced |
| Morgan Stanley | 290,384 | $4.71M | 0.00% | +206,378+245.7% | Added |
| Logos Global Management LP | 250,000 | $4.05M | 0.42% | +250,000 | New |
| Charles Schwab Investment Management Inc | 244,744 | $3.97M | 0.00% | +5,125+2.1% | Added |
| New York State Common Retirement Fund | 236,284 | $3.83M | 0.00% | −65,714−21.8% | Reduced |
| Ashford Capital Management Inc | 226,180 | $3.67M | 0.37% | −225,930−50.0% | Reduced |
| Goldman Sachs Group Inc | 217,361 | $3.52M | 0.00% | −595,994−73.3% | Reduced |
| Dimensional Fund Advisors LP | 191,802 | $3.11M | 0.00% | +66,280+52.8% | Added |
| Memorial Sloan Kettering Cancer Center | 191,176 | $3.10M | 1.95% | −25,740−11.9% | Reduced |
| Candriam Luxembourg S.C.A. | 183,692 | $2.98M | 0.02% | +5,511+3.1% | Added |
| Citadel Advisors LLC | 125,698 | $2.04M | 0.00% | +21,183+20.3% | Added |
| Bank of New York Mellon Corp | 103,345 | $1.68M | 0.00% | −289−0.3% | Reduced |
| Nuveen Asset Management, LLC | 105,509 | $1.62M | 0.00% | −34,704−24.8% | Reduced |
| Renaissance Technologies LLC | 98,600 | $1.60M | 0.00% | +98,600 | New |
| Rice Hall James & Associates, LLC | 84,395 | $1.37M | 0.05% | −14,896−15.0% | Reduced |
| Bank of America Corp | 81,925 | $1.33M | 0.00% | +1,661+2.1% | Added |
| Rafferty Asset Management, LLC | 76,576 | $1.24M | 0.01% | +35,991+88.7% | Added |
| Gsa Capital Partners LLP | 69,311 | $1.12M | 0.14% | +69,311 | New |
| Citigroup Inc | 67,755 | $1.10M | 0.00% | +35,999+113.4% | Added |
| UBS Group AG | 64,449 | $1.04M | 0.00% | +38,890+152.2% | Added |
| Russell Investments Group, Ltd. | 64,404 | $1.04M | 0.00% | +28,124+77.5% | Added |
| Barclays PLC | 59,978 | $972.0K | 0.00% | +42,509+243.3% | Added |
| Swiss National Bank | 57,300 | $929.0K | 0.00% | 00.0% | Unchanged |
| Alps Advisors Inc | 50,503 | $819.0K | 0.01% | −2,906−5.4% | Reduced |
| Jane Street Group, LLC | 44,673 | $724.0K | 0.00% | +26,362+144.0% | Added |
| California State Teachers Retirement System | 41,126 | $667.0K | 0.00% | +894+2.2% | Added |
| State of Wisconsin Investment Board | 41,000 | $665.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 38,792 | $629.0K | 0.00% | +38,792 | New |
| JPMorgan Chase & Co | 37,570 | $610.0K | 0.00% | +1,690+4.7% | Added |
| Rhumbline Advisers | 36,417 | $590.0K | 0.00% | −605−1.6% | Reduced |
| SEI Investments Co | 32,950 | $534.0K | 0.00% | +7,859+31.3% | Added |
| Susquehanna International Group, LLP | 30,280 | $491.0K | 0.00% | +3,701+13.9% | Added |
| Allianz Asset Management GmbH | 29,754 | $482.0K | 0.00% | −7,600−20.3% | Reduced |
| Wells Fargo & Company | 28,965 | $470.0K | 0.00% | −13,158−31.2% | Reduced |
| Teachers Retirement System of the State of Kentucky | 25,674 | $416.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 24,400 | $396.0K | 0.00% | −24,600−50.2% | Reduced |
| Brandywine Global Investment Management, LLC | 24,400 | $396.0K | 0.00% | −8,137−25.0% | Reduced |
| Deutsche Bank AG | 24,402 | $396.0K | 0.00% | +1,545+6.8% | Added |
| Virtus ETF Advisers LLC | 23,646 | $383.0K | 0.14% | +11,068+88.0% | Added |
| Manufacturers Life Insurance Company, The | 19,220 | $312.0K | 0.00% | +364+1.9% | Added |
| American International Group, Inc. | 18,572 | $301.0K | 0.00% | −556−2.9% | Reduced |
| Ergoteles LLC | 18,566 | $301.0K | 0.01% | +18,566 | New |
| Cna Financial Corp | 18,230 | $296.0K | 0.08% | +4,470+32.5% | Added |
| Credit Suisse AG | 18,066 | $294.0K | 0.00% | +1,124+6.6% | Added |
| Walleye Capital LLC | 17,188 | $279.0K | 0.01% | +17,188 | New |
| Qube Research & Technologies Ltd | 15,577 | $253.0K | 0.00% | +15,577 | New |
| UBS Asset Management Americas Inc | 15,600 | $252.9K | 0.00% | −7,819−33.4% | Reduced |
| Parametric Portfolio Associates LLC | 15,134 | $245.0K | 0.00% | +4,083+36.9% | Added |
| Invesco Ltd. | 15,033 | $244.0K | 0.00% | −1,396−8.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 15,063 | $244.0K | 0.00% | +15,063 | New |
| SG Americas Securities, LLC | 15,020 | $243.0K | 0.00% | −10,790−41.8% | Reduced |
| ProShare Advisors LLC | 13,779 | $224.0K | 0.00% | −8−0.1% | Reduced |
| Voya Investment Management LLC | 13,661 | $221.0K | 0.00% | −41−0.3% | Reduced |
| DekaBank Deutsche Girozentrale | 13,100 | $221.0K | 0.00% | +400+3.1% | Added |
| MetLife Investment Management | 13,415 | $217.5K | 0.00% | 00.0% | Unchanged |
| DnB Asset Management AS | 13,367 | $216.7K | 0.00% | +801+6.4% | Added |
| Royal Bank of Canada | 12,723 | $206.0K | 0.00% | −2,837−18.2% | Reduced |
| Millennium Management LLC | 12,613 | $204.0K | 0.00% | +12,613 | New |
| State Board of Administration of Florida Retirement System | 11,156 | $181.0K | 0.00% | +137+1.2% | Added |
| Erste Asset Management GmbH | 10,000 | $168.9K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,999 | $162.0K | 0.00% | +85+0.9% | Added |
| Metropolitan Life Insurance Co | 9,573 | $155.2K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 9,100 | $147.5K | 0.00% | +2,651+41.1% | Added |
| Ensign Peak Advisors, Inc | 4,340 | $70.0K | 0.00% | −1,703−28.2% | Reduced |
| Advisor Group Holdings, Inc. | 4,159 | $67.0K | 0.00% | +4,159 | New |
| Tower Research Capital LLC (TRC) | 3,175 | $52.0K | 0.00% | +932+41.6% | Added |
| Ameritas Investment Partners, Inc. | 2,645 | $43.0K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 2,700 | $43.0K | 0.00% | +2,100+350.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,868 | $30.0K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 1,443 | $23.0K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,313 | $21.0K | 0.00% | +1,313 | New |
| HighMark Wealth Management LLC | 870 | $14.0K | 0.01% | −233−21.1% | Reduced |
| Migdal Insurance & Financial Holdings Ltd. | 730 | $12.0K | 0.00% | −990−57.6% | Reduced |
| Cassady Schiller Wealth Management, LLC | 525 | $9.00K | 0.01% | +525 | New |
| Macquarie Group Ltd | 471 | $8.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 249 | $4.00K | 0.00% | +160+179.8% | Added |
| Daiwa Securities Group Inc. | 149 | $2.00K | 0.00% | 00.0% | Unchanged |
| Eagle Bay Advisors LLC | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 83 | $1.00K | 0.00% | +83 | New |
| Lindbrook Capital, LLC | 51 | $1.00K | 0.00% | +51 | New |
| Parallel Advisors, LLC | 16 | $0 | 0.00% | +16 | New |
| Covestor Ltd | 16 | $0 | 0.00% | +16 | New |
| First Light Asset Management, LLC | 0 | $0 | 0.00% | −577,663−100.0% | Sold out |
| Oracle Investment Management Inc | 0 | $0 | 0.00% | −315,642−100.0% | Sold out |
| Brookfield Asset Management Inc. | 0 | $0 | 0.00% | −179,236−100.0% | Sold out |