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 2023
Institutional positions in Y-mAbs Therapeutics, Inc. as of Dec 31, 2023. 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
- 94
- −4 vs. Q3 2023
- Shares held
- 20.2M
- +765.3K (+3.9%) vs. Q3 2023
- Total value
- $138.0M
- +$31.8M (+29.9%) vs. Q3 2023
- New holders
- 11
- 37 more added
- Sold out
- 15
- 32 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 2023
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 2,917,080 | $19.9M | 0.00% | +443,724+17.9% | Added |
| Vanguard Group Inc | 2,244,238 | $15.3M | 0.00% | +12,330+0.6% | Added |
| Sofinnova Investments, Inc. | 2,194,278 | $15.0M | 0.84% | 00.0% | Unchanged |
| Polar Capital Holdings Plc | 2,056,872 | $14.0M | 0.10% | −46,426−2.2% | Reduced |
| D. E. Shaw & Co., Inc. | 1,323,780 | $9.03M | 0.01% | −25,430−1.9% | Reduced |
| Caligan Partners LP | 1,048,425 | $7.15M | 2.41% | +1,025,104+4,395.6% | Added |
| Acadian Asset Management LLC | 802,381 | $5.47M | 0.02% | −8,880−1.1% | Reduced |
| State Street Corp | 761,532 | $5.19M | 0.00% | +20,434+2.8% | Added |
| Geode Capital Management, LLC | 738,548 | $5.04M | 0.00% | +27,715+3.9% | Added |
| Boothbay Fund Management, LLC | 694,094 | $4.73M | 0.18% | +678,548+4,364.8% | Added |
| Nuveen Asset Management, LLC | 399,940 | $2.73M | 0.00% | +41,541+11.6% | Added |
| Goldman Sachs Group Inc | 397,951 | $2.71M | 0.00% | +8,604+2.2% | Added |
| Los Angeles Capital Management LLC | 356,530 | $2.43M | 0.01% | +52,610+17.3% | Added |
| Northern Trust Corp | 325,439 | $2.22M | 0.00% | +2,252+0.7% | Added |
| Dimensional Fund Advisors LP | 313,101 | $2.14M | 0.00% | +71,512+29.6% | Added |
| Jacobs Levy Equity Management, Inc | 252,920 | $1.72M | 0.01% | −277,519−52.3% | Reduced |
| Charles Schwab Investment Management Inc | 247,506 | $1.69M | 0.00% | −1,938−0.8% | Reduced |
| Morgan Stanley | 245,145 | $1.67M | 0.00% | +137,271+127.3% | Added |
| Renaissance Technologies LLC | 174,800 | $1.19M | 0.00% | −62,290−26.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 170,003 | $1.16M | 0.01% | −13,945−7.6% | Reduced |
| Two Sigma Advisers, LP | 165,000 | $1.13M | 0.00% | −37,200−18.4% | Reduced |
| Soleus Capital Management, L.P. | 157,182 | $1.07M | 0.12% | 00.0% | Unchanged |
| Citadel Advisors LLC | 137,500 | $937.8K | 0.00% | −276,807−66.8% | Reduced |
| Bank of New York Mellon Corp | 119,967 | $818.2K | 0.00% | +362+0.3% | Added |
| Marshall Wace, LLP | 114,786 | $782.8K | 0.00% | +15,855+16.0% | Added |
| Prudential Financial Inc | 113,650 | $775.1K | 0.00% | −172,200−60.2% | Reduced |
| Bridgeway Capital Management, LLC | 95,600 | $652.0K | 0.01% | 00.0% | Unchanged |
| Rice Hall James & Associates, LLC | 85,513 | $583.2K | 0.03% | −5,736−6.3% | Reduced |
| Campbell & CO Investment Adviser LLC | 82,391 | $561.9K | 0.05% | +82,391 | New |
| Massachusetts Financial Services Co | 79,617 | $543.0K | 0.00% | −2,514−3.1% | Reduced |
| STRS Ohio | 78,700 | $536.0K | 0.00% | −10,300−11.6% | Reduced |
| State of Wisconsin Investment Board | 76,903 | $524.5K | 0.00% | −24,800−24.4% | Reduced |
| New York Life Investment Management LLC | 68,932 | $470.1K | 0.00% | −2,023−2.9% | Reduced |
| Alliancebernstein L.P. | 62,730 | $427.8K | 0.00% | −14,559−18.8% | Reduced |
| Two Sigma Investments, LP | 61,839 | $421.7K | 0.00% | −11,192−15.3% | Reduced |
| Rhumbline Advisers | 54,013 | $368.4K | 0.00% | −874−1.6% | Reduced |
| Barclays PLC | 50,437 | $344.0K | 0.00% | +44,135+700.3% | Added |
| Federated Hermes, Inc. | 44,474 | $303.3K | 0.00% | +43,549+4,708.0% | Added |
| Sapient Capital LLC | 43,700 | $298.0K | 0.01% | +43,700 | New |
| EntryPoint Capital, LLC | 41,949 | $286.1K | 0.27% | +41,949 | New |
| JPMorgan Chase & Co | 41,364 | $282.1K | 0.00% | +8,841+27.2% | Added |
| Cubist Systematic Strategies, LLC | 37,112 | $253.1K | 0.00% | +559+1.5% | Added |
| FMR LLC | 36,842 | $251.3K | 0.00% | +767+2.1% | Added |
| UBS Group AG | 36,744 | $250.6K | 0.00% | +17,211+88.1% | Added |
| Bank of America Corp | 36,513 | $249.0K | 0.00% | +2,077+6.0% | Added |
| BNP Paribas Arbitrage, SA | 35,174 | $239.9K | 0.00% | +21,681+160.7% | Added |
| Jane Street Group, LLC | 32,288 | $220.2K | 0.00% | +32,288 | New |
| Trexquant Investment LP | 28,616 | $195.2K | 0.00% | −47,969−62.6% | Reduced |
| American Century Companies Inc | 28,444 | $194.0K | 0.00% | +6,683+30.7% | Added |
| Exchange Traded Concepts, LLC | 28,095 | $191.6K | 0.01% | +7,124+34.0% | Added |
| Susquehanna Fundamental Investments, LLC | 26,482 | $180.6K | 0.18% | −14,478−35.3% | Reduced |
| ExodusPoint Capital Management, LP | 26,224 | $179.0K | 0.00% | +12,098+85.6% | Added |
| Mirae Asset Global Investments Co., Ltd. | 26,090 | $177.9K | 0.00% | +1,089+4.4% | Added |
| SG Americas Securities, LLC | 21,559 | $147.0K | 0.00% | +3,210+17.5% | Added |
| Millennium Management LLC | 21,061 | $143.6K | 0.00% | −325,855−93.9% | Reduced |
| MetLife Investment Management | 20,086 | $137.0K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 19,501 | $133.0K | 0.00% | +1,219+6.7% | Added |
| Deutsche Bank AG | 18,664 | $127.3K | 0.00% | +509+2.8% | Added |
| American International Group, Inc. | 18,287 | $124.7K | 0.00% | −74−0.4% | Reduced |
| Russell Investments Group, Ltd. | 16,928 | $115.4K | 0.00% | −9,725−36.5% | Reduced |
| Bailard, Inc. | 16,900 | $115.3K | 0.00% | +16,900 | New |
| Susquehanna International Group, LLP | 16,640 | $113.5K | 0.00% | −6,070−26.7% | Reduced |
| Denali Advisors LLC | 16,400 | $111.8K | 0.03% | −69,500−80.9% | Reduced |
| Franklin Resources Inc | 15,738 | $107.3K | 0.00% | +59+0.4% | Added |
| Voya Investment Management LLC | 15,605 | $106.4K | 0.00% | −22,765−59.3% | Reduced |
| Manufacturers Life Insurance Company, The | 15,582 | $106.3K | 0.00% | 00.0% | Unchanged |
| Susquehanna Portfolio Strategies, LLC | 15,456 | $105.4K | 0.00% | +15,456 | New |
| Cim Investment Mangement Inc | 15,313 | $104.4K | 0.03% | 00.0% | Unchanged |
| Principal Financial Group Inc | 14,829 | $101.1K | 0.00% | −390−2.6% | Reduced |
| State Board of Administration of Florida Retirement System | 14,596 | $99.5K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 13,261 | $90.4K | 0.00% | +1,477+12.5% | Added |
| ADAR1 Capital Management, LLC | 13,045 | $89.0K | 0.04% | +13,045 | New |
| Wells Fargo & Company | 10,433 | $71.2K | 0.00% | +2,202+26.8% | Added |
| Royal Bank of Canada | 10,377 | $71.0K | 0.00% | +4,910+89.8% | Added |
| Avestar Capital, LLC | 10,000 | $68.2K | 0.01% | 00.0% | Unchanged |
| Point72 Middle East FZE | 7,359 | $50.2K | 0.00% | +7,359 | New |
| Tower Research Capital LLC (TRC) | 6,686 | $45.6K | 0.00% | +5,185+345.4% | Added |
| Qube Research & Technologies Ltd | 6,249 | $42.6K | 0.00% | +6,249 | New |
| New York State Common Retirement Fund | 6,239 | $42.5K | 0.00% | −31−0.5% | Reduced |
| California State Teachers Retirement System | 6,056 | $41.3K | 0.00% | −2,062−25.4% | Reduced |
| Citigroup Inc | 6,011 | $41.0K | 0.00% | +5,992+31,536.8% | Added |
| Public Employees Retirement System of Ohio | 5,253 | $35.8K | 0.00% | −10,847−67.4% | Reduced |
| China Universal Asset Management Co., Ltd. | 5,050 | $34.4K | 0.01% | +5,050 | New |
| Amalgamated Bank | 4,121 | $28.0K | 0.00% | −362−8.1% | Reduced |
| Legal & General Group Plc | 3,670 | $25.1K | 0.00% | +299+8.9% | Added |
| Ameritas Investment Partners, Inc. | 2,645 | $18.0K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 2,055 | $14.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,577 | $10.0K | 0.00% | +764+94.0% | Added |
| HighMark Wealth Management LLC | 220 | $1.50K | 0.00% | 00.0% | Unchanged |
| Eagle Bay Advisors LLC | 50 | $341 | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 46 | $313 | 0.00% | −6,438−99.3% | Reduced |
| Nisa Investment Advisors, LLC | 40 | $273 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1 | $7 | 0.00% | +1 | New |
| CWM, LLC | 65 | $0 | 0.00% | 00.0% | Unchanged |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −245,482−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −137,299−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −109,500−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −79,600−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −41,781−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −31,690−100.0% | Sold out |