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 2025
Institutional positions in Y-mAbs Therapeutics, Inc. as of Sep 30, 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
YMAB is no longer listed, and 13F filings after Q2 2025 list far fewer holders. See Q2 2025
- Institutional holders
- 2
- −95 vs. Q2 2025
- Shares held
- 16.4K
- −27.9M (−99.9%) vs. Q2 2025
- Total value
- $78.3K
- −$125.8M (−99.9%) vs. Q2 2025
- New holders
- 0
- 1 more added
- Sold out
- 95
- 1 more reduced
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Skopos Labs, Inc. | 16,061 | $75.5K | 0.01% | +11,110+224.4% | Added |
| IFP Advisors, Inc | 332 | $2.86K | 0.00% | −2−0.6% | Reduced |
| Paradigm Biocapital Advisors LP | 0 | $0 | 0.00% | −4,236,346−100.0% | Sold out |
| Acorn Capital Advisors, LLC | 0 | $0 | 0.00% | −3,418,995−100.0% | Sold out |
| BlackRock, Inc. | 0 | $0 | 0.00% | −2,748,077−100.0% | Sold out |
| Caligan Partners LP | 0 | $0 | 0.00% | −2,342,609−100.0% | Sold out |
| Sofinnova Investments, Inc. | 0 | $0 | 0.00% | −2,194,278−100.0% | Sold out |
| Vanguard Group Inc | 0 | $0 | 0.00% | −1,943,285−100.0% | Sold out |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −1,789,800−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −848,461−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −780,145−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −693,693−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −516,857−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −412,246−100.0% | Sold out |
| Nantahala Capital Management, LLC | 0 | $0 | 0.00% | −351,878−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −349,982−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −308,130−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −292,567−100.0% | Sold out |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −285,300−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −278,179−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −274,164−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −252,142−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −229,072−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −212,751−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −207,642−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −186,062−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −164,100−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −164,055−100.0% | Sold out |
| Infinitum Asset Management, LLC | 0 | $0 | 0.00% | −155,529−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −142,641−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −139,955−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −125,298−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −119,425−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −115,700−100.0% | Sold out |
| Rice Hall James & Associates, LLC | 0 | $0 | 0.00% | −109,604−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −99,352−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −94,383−100.0% | Sold out |
| Nuveen, LLC | 0 | $0 | 0.00% | −93,418−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −86,440−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −72,842−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −69,908−100.0% | Sold out |
| Rhumbline Advisers | 0 | $0 | 0.00% | −68,399−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −62,400−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −61,500−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −60,873−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −59,380−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −55,700−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −51,336−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −51,090−100.0% | Sold out |
| Sapient Capital LLC | 0 | $0 | 0.00% | −43,700−100.0% | Sold out |
| Invesco Ltd. | 0 | $0 | 0.00% | −42,833−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −40,181−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −38,925−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −30,868−100.0% | Sold out |
| Deutsche Bank AG | 0 | $0 | 0.00% | −28,803−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −24,429−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −21,928−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −21,674−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −21,185−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −19,037−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −17,211−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −15,250−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −14,596−100.0% | Sold out |
| Manufacturers Life Insurance Company, The | 0 | $0 | 0.00% | −13,143−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −12,233−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −12,171−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −11,948−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −11,494−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −10,742−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −10,284−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −10,110−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −9,097−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −7,701−100.0% | Sold out |
| Police & Firemen's Retirement System of New Jersey | 0 | $0 | 0.00% | −7,327−100.0% | Sold out |
| CWM, LLC | 0 | $0 | 0.00% | −7,121−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −4,131−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −3,701−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −2,665−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −1,750−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −1,612−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −1,265−100.0% | Sold out |
| GF Fund Management Co. Ltd. | 0 | $0 | 0.00% | −1,111−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −1,217−100.0% | Sold out |
| Essential Partners LLC | 0 | $0 | 0.00% | −930−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −287−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −162−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −201−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −129−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −122−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −104−100.0% | Sold out |
| Sterling Capital Management LLC | 0 | $0 | 0.00% | −87−100.0% | Sold out |
| Rothschild Investment LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| SBI Securities Co., Ltd. | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |