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, Q1 2025
Institutional positions in Y-mAbs Therapeutics, Inc. as of Mar 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
- 103
- −9 vs. Q4 2024
- Shares held
- 28.8M
- +120.5K (+0.4%) vs. Q4 2024
- Total value
- $127.6M
- −$97.0M (−43.2%) vs. Q4 2024
- New holders
- 17
- 40 more added
- Sold out
- 26
- 28 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Paradigm Biocapital Advisors LP | 4,236,346 | $18.8M | 0.86% | 00.0% | Unchanged |
| Acorn Capital Advisors, LLC | 3,235,387 | $14.3M | 9.56% | +373,562+13.1% | Added |
| BlackRock, Inc. | 2,902,025 | $12.9M | 0.00% | −96,447−3.2% | Reduced |
| Caligan Partners LP | 2,342,609 | $10.4M | 2.17% | +574,627+32.5% | Added |
| Sofinnova Investments, Inc. | 2,194,278 | $9.72M | 0.73% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,946,509 | $8.62M | 0.00% | −53,513−2.7% | Reduced |
| Polar Capital Holdings Plc | 1,831,000 | $8.11M | 0.05% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 849,500 | $3.76M | 0.00% | +27,191+3.3% | Added |
| State Street Corp | 789,021 | $3.50M | 0.00% | −525,388−40.0% | Reduced |
| Boothbay Fund Management, LLC | 693,693 | $3.07M | 0.11% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 549,666 | $2.44M | 0.00% | −65,465−10.6% | Reduced |
| Morgan Stanley | 500,161 | $2.22M | 0.00% | +179,354+55.9% | Added |
| Millennium Management LLC | 466,620 | $2.07M | 0.00% | +431,173+1,216.4% | Added |
| Pictet Asset Management Holding SA | 441,934 | $1.96M | 0.00% | −314,363−41.6% | Reduced |
| Dimensional Fund Advisors LP | 418,554 | $1.86M | 0.00% | −44,681−9.6% | Reduced |
| Soleus Capital Management, L.P. | 349,982 | $1.55M | 0.12% | 00.0% | Unchanged |
| Northern Trust Corp | 327,901 | $1.45M | 0.00% | −31,322−8.7% | Reduced |
| Bank of America Corp | 282,318 | $1.25M | 0.00% | +155,159+122.0% | Added |
| Charles Schwab Investment Management Inc | 277,610 | $1.23M | 0.00% | −6,930−2.4% | Reduced |
| Renaissance Technologies LLC | 256,706 | $1.14M | 0.00% | +125,106+95.1% | Added |
| JPMorgan Chase & Co | 247,442 | $1.10M | 0.00% | +149,782+153.4% | Added |
| Jacobs Levy Equity Management, Inc | 237,511 | $1.05M | 0.00% | +87,830+58.7% | Added |
| Wellington Management Group LLP | 204,052 | $904.0K | 0.00% | +70,789+53.1% | Added |
| Goldman Sachs Group Inc | 201,776 | $893.9K | 0.00% | −17,399−7.9% | Reduced |
| AQR Capital Management LLC | 164,788 | $730.0K | 0.00% | +147,788+869.3% | Added |
| Infinitum Asset Management, LLC | 155,529 | $689.0K | 0.22% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 155,522 | $689.0K | 0.01% | +107,511+223.9% | Added |
| Two Sigma Investments, LP | 154,785 | $685.7K | 0.00% | +66,448+75.2% | Added |
| Citadel Advisors LLC | 153,955 | $682.0K | 0.00% | −67,959−30.6% | Reduced |
| Federated Hermes, Inc. | 153,453 | $679.8K | 0.00% | +108,979+245.0% | Added |
| Two Sigma Advisers, LP | 143,300 | $634.8K | 0.00% | +69,400+93.9% | Added |
| Stonepine Capital Management, LLC | 131,160 | $581.0K | 0.68% | +131,160 | New |
| Squarepoint Ops LLC | 128,527 | $569.4K | 0.00% | +25,559+24.8% | Added |
| Nuveen, LLC | 112,483 | $498.3K | 0.00% | +112,483 | New |
| Rice Hall James & Associates, LLC | 103,642 | $459.1K | 0.03% | −4,907−4.5% | Reduced |
| BNP Paribas Arbitrage, SA | 95,502 | $423.1K | 0.00% | +90,628+1,859.4% | Added |
| Bank of New York Mellon Corp | 92,474 | $409.7K | 0.00% | +250.0% | Added |
| UBS Group AG | 91,576 | $405.7K | 0.00% | +52,644+135.2% | Added |
| XTX Topco Ltd | 91,454 | $405.1K | 0.02% | +70,686+340.4% | Added |
| Susquehanna International Group, LLP | 60,660 | $268.7K | 0.00% | +32,171+112.9% | Added |
| Wesbanco Bank Inc | 55,000 | $243.7K | 0.01% | +55,000 | New |
| Alliancebernstein L.P. | 54,780 | $242.7K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 53,909 | $238.8K | 0.00% | +2,457+4.8% | Added |
| Barclays PLC | 46,758 | $207.1K | 0.00% | −29,104−38.4% | Reduced |
| Sapient Capital LLC | 43,700 | $193.6K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 43,400 | $192.3K | 0.00% | 00.0% | Unchanged |
| Quest Partners LLC | 38,925 | $172.4K | 0.02% | +11,790+43.4% | Added |
| Jump Financial, LLC | 38,079 | $168.7K | 0.00% | +4,699+14.1% | Added |
| Virtus Investment Advisers, Inc. | 36,751 | $162.8K | 0.04% | +36,751 | New |
| Alps Advisors Inc | 33,309 | $147.6K | 0.00% | −2,906−8.0% | Reduced |
| Invesco Ltd. | 32,547 | $144.2K | 0.00% | +17,624+118.1% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 31,088 | $137.7K | 0.04% | +31,088 | New |
| FMR LLC | 29,261 | $129.6K | 0.00% | −22,461−43.4% | Reduced |
| Deutsche Bank AG | 28,803 | $127.6K | 0.00% | −3,450−10.7% | Reduced |
| Citigroup Inc | 28,518 | $126.3K | 0.00% | −20,713−42.1% | Reduced |
| Exchange Traded Concepts, LLC | 26,762 | $118.6K | 0.00% | +13,890+107.9% | Added |
| Intech Investment Management LLC | 26,695 | $118.3K | 0.00% | +4,519+20.4% | Added |
| Man Group plc | 26,004 | $115.2K | 0.00% | +26,004 | New |
| Bridgeway Capital Management, LLC | 24,900 | $110.3K | 0.00% | −25,000−50.1% | Reduced |
| Principal Financial Group Inc | 22,434 | $99.4K | 0.00% | +237+1.1% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 22,121 | $98.0K | 0.00% | −697−3.1% | Reduced |
| Gsa Capital Partners LLP | 20,631 | $91.0K | 0.01% | +20,631 | New |
| Corebridge Financial, Inc. | 18,305 | $81.1K | 0.00% | −272−1.5% | Reduced |
| Wells Fargo & Company | 17,852 | $79.1K | 0.00% | +394+2.3% | Added |
| Price T Rowe Associates Inc | 17,211 | $77.0K | 0.00% | +3,144+22.4% | Added |
| MetLife Investment Management | 17,076 | $75.6K | 0.00% | −5,065−22.9% | Reduced |
| State Board of Administration of Florida Retirement System | 14,596 | $64.7K | 0.00% | 00.0% | Unchanged |
| Bayesian Capital Management, LP | 14,382 | $63.7K | 0.01% | +14,382 | New |
| Atom Investors LP | 14,141 | $62.6K | 0.01% | +14,141 | New |
| Manufacturers Life Insurance Company, The | 13,939 | $61.8K | 0.00% | +121+0.9% | Added |
| SG Americas Securities, LLC | 13,284 | $59.0K | 0.00% | −4,445−25.1% | Reduced |
| EntryPoint Capital, LLC | 12,654 | $56.1K | 0.03% | +12,654 | New |
| Corton Capital Inc. | 12,432 | $55.1K | 0.18% | +12,432 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 11,084 | $49.1K | 0.00% | +11,084 | New |
| Voya Investment Management LLC | 10,211 | $45.2K | 0.00% | −1,484−12.7% | Reduced |
| New York State Common Retirement Fund | 10,110 | $44.8K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 10,109 | $44.8K | 0.00% | −2,536−20.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 8,984 | $39.8K | 0.00% | −513−5.4% | Reduced |
| Legal & General Group Plc | 8,575 | $38.0K | 0.00% | −26,367−75.5% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 7,327 | $32.5K | 0.00% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 5,923 | $26.2K | 0.01% | +5,796+4,563.8% | Added |
| Point72 (DIFC) Ltd | 5,058 | $22.4K | 0.00% | +4,570+936.5% | Added |
| Tower Research Capital LLC (TRC) | 5,020 | $22.2K | 0.00% | +3,378+205.7% | Added |
| Lazard Asset Management LLC | 4,812 | $21.0K | 0.00% | +4,812 | New |
| Ameritas Investment Partners, Inc. | 3,701 | $16.4K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 2,665 | $11.8K | 0.00% | −26,816−91.0% | Reduced |
| CWM, LLC | 2,350 | $10.0K | 0.00% | +2,282+3,355.9% | Added |
| Farther Finance Advisors, LLC | 1,998 | $8.99K | 0.00% | +1,997+199,700.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 1,505 | $7.24K | 0.00% | +12+0.8% | Added |
| Royal Bank of Canada | 1,710 | $7.00K | 0.00% | −53,967−96.9% | Reduced |
| Amalgamated Bank | 1,217 | $5.00K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 1,111 | $4.92K | 0.00% | +171+18.2% | Added |
| Nisa Investment Advisors, LLC | 259 | $1.15K | 0.00% | +205+379.6% | Added |
| Simplex Trading, LLC | 437 | $1.00K | 0.00% | −1,346−75.5% | Reduced |
| Daiwa Securities Group Inc. | 162 | $1.00K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 110 | $487 | 0.00% | +70+175.0% | Added |
| South State Corp. | 68 | $302 | 0.00% | +68 | New |
| CoreCap Advisors, LLC | 46 | $204 | 0.00% | +46 | New |
| EverSource Wealth Advisors, LLC | 44 | $195 | 0.00% | +44 | New |
| Sterling Capital Management LLC | 38 | $168 | 0.00% | 00.0% | Unchanged |