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 |
|---|---|---|---|---|---|
| CWM, LLC | 65 | $0 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1 | $7 | 0.00% | +1 | New |
| Nisa Investment Advisors, LLC | 40 | $273 | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 46 | $313 | 0.00% | −6,438−99.3% | Reduced |
| Eagle Bay Advisors LLC | 50 | $341 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 220 | $1.50K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,577 | $10.0K | 0.00% | +764+94.0% | Added |
| Metropolitan Life Insurance Co | 2,055 | $14.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 2,645 | $18.0K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 3,670 | $25.1K | 0.00% | +299+8.9% | Added |
| Amalgamated Bank | 4,121 | $28.0K | 0.00% | −362−8.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 5,050 | $34.4K | 0.01% | +5,050 | New |
| Public Employees Retirement System of Ohio | 5,253 | $35.8K | 0.00% | −10,847−67.4% | Reduced |
| Citigroup Inc | 6,011 | $41.0K | 0.00% | +5,992+31,536.8% | Added |
| California State Teachers Retirement System | 6,056 | $41.3K | 0.00% | −2,062−25.4% | Reduced |
| New York State Common Retirement Fund | 6,239 | $42.5K | 0.00% | −31−0.5% | Reduced |
| Qube Research & Technologies Ltd | 6,249 | $42.6K | 0.00% | +6,249 | New |
| Tower Research Capital LLC (TRC) | 6,686 | $45.6K | 0.00% | +5,185+345.4% | Added |
| Point72 Middle East FZE | 7,359 | $50.2K | 0.00% | +7,359 | New |
| Avestar Capital, LLC | 10,000 | $68.2K | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 10,377 | $71.0K | 0.00% | +4,910+89.8% | Added |
| Wells Fargo & Company | 10,433 | $71.2K | 0.00% | +2,202+26.8% | Added |
| ADAR1 Capital Management, LLC | 13,045 | $89.0K | 0.04% | +13,045 | New |
| Invesco Ltd. | 13,261 | $90.4K | 0.00% | +1,477+12.5% | Added |
| State Board of Administration of Florida Retirement System | 14,596 | $99.5K | 0.00% | 00.0% | Unchanged |
| Principal Financial Group Inc | 14,829 | $101.1K | 0.00% | −390−2.6% | Reduced |
| Cim Investment Mangement Inc | 15,313 | $104.4K | 0.03% | 00.0% | Unchanged |
| Susquehanna Portfolio Strategies, LLC | 15,456 | $105.4K | 0.00% | +15,456 | New |
| Manufacturers Life Insurance Company, The | 15,582 | $106.3K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 15,605 | $106.4K | 0.00% | −22,765−59.3% | Reduced |
| Franklin Resources Inc | 15,738 | $107.3K | 0.00% | +59+0.4% | Added |
| Denali Advisors LLC | 16,400 | $111.8K | 0.03% | −69,500−80.9% | Reduced |
| Susquehanna International Group, LLP | 16,640 | $113.5K | 0.00% | −6,070−26.7% | Reduced |
| Bailard, Inc. | 16,900 | $115.3K | 0.00% | +16,900 | New |
| Russell Investments Group, Ltd. | 16,928 | $115.4K | 0.00% | −9,725−36.5% | Reduced |
| American International Group, Inc. | 18,287 | $124.7K | 0.00% | −74−0.4% | Reduced |
| Deutsche Bank AG | 18,664 | $127.3K | 0.00% | +509+2.8% | Added |
| Price T Rowe Associates Inc | 19,501 | $133.0K | 0.00% | +1,219+6.7% | Added |
| MetLife Investment Management | 20,086 | $137.0K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 21,061 | $143.6K | 0.00% | −325,855−93.9% | Reduced |
| SG Americas Securities, LLC | 21,559 | $147.0K | 0.00% | +3,210+17.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 26,090 | $177.9K | 0.00% | +1,089+4.4% | Added |
| ExodusPoint Capital Management, LP | 26,224 | $179.0K | 0.00% | +12,098+85.6% | Added |
| Susquehanna Fundamental Investments, LLC | 26,482 | $180.6K | 0.18% | −14,478−35.3% | Reduced |
| Exchange Traded Concepts, LLC | 28,095 | $191.6K | 0.01% | +7,124+34.0% | Added |
| American Century Companies Inc | 28,444 | $194.0K | 0.00% | +6,683+30.7% | Added |
| Trexquant Investment LP | 28,616 | $195.2K | 0.00% | −47,969−62.6% | Reduced |
| Jane Street Group, LLC | 32,288 | $220.2K | 0.00% | +32,288 | New |
| BNP Paribas Arbitrage, SA | 35,174 | $239.9K | 0.00% | +21,681+160.7% | Added |
| Bank of America Corp | 36,513 | $249.0K | 0.00% | +2,077+6.0% | Added |
| UBS Group AG | 36,744 | $250.6K | 0.00% | +17,211+88.1% | Added |
| FMR LLC | 36,842 | $251.3K | 0.00% | +767+2.1% | Added |
| Cubist Systematic Strategies, LLC | 37,112 | $253.1K | 0.00% | +559+1.5% | Added |
| JPMorgan Chase & Co | 41,364 | $282.1K | 0.00% | +8,841+27.2% | Added |
| EntryPoint Capital, LLC | 41,949 | $286.1K | 0.27% | +41,949 | New |
| Sapient Capital LLC | 43,700 | $298.0K | 0.01% | +43,700 | New |
| Federated Hermes, Inc. | 44,474 | $303.3K | 0.00% | +43,549+4,708.0% | Added |
| Barclays PLC | 50,437 | $344.0K | 0.00% | +44,135+700.3% | Added |
| Rhumbline Advisers | 54,013 | $368.4K | 0.00% | −874−1.6% | Reduced |
| Two Sigma Investments, LP | 61,839 | $421.7K | 0.00% | −11,192−15.3% | Reduced |
| Alliancebernstein L.P. | 62,730 | $427.8K | 0.00% | −14,559−18.8% | Reduced |
| New York Life Investment Management LLC | 68,932 | $470.1K | 0.00% | −2,023−2.9% | Reduced |
| State of Wisconsin Investment Board | 76,903 | $524.5K | 0.00% | −24,800−24.4% | Reduced |
| STRS Ohio | 78,700 | $536.0K | 0.00% | −10,300−11.6% | Reduced |
| Massachusetts Financial Services Co | 79,617 | $543.0K | 0.00% | −2,514−3.1% | Reduced |
| Campbell & CO Investment Adviser LLC | 82,391 | $561.9K | 0.05% | +82,391 | New |
| Rice Hall James & Associates, LLC | 85,513 | $583.2K | 0.03% | −5,736−6.3% | Reduced |
| Bridgeway Capital Management, LLC | 95,600 | $652.0K | 0.01% | 00.0% | Unchanged |
| Prudential Financial Inc | 113,650 | $775.1K | 0.00% | −172,200−60.2% | Reduced |
| Marshall Wace, LLP | 114,786 | $782.8K | 0.00% | +15,855+16.0% | Added |
| Bank of New York Mellon Corp | 119,967 | $818.2K | 0.00% | +362+0.3% | Added |
| Citadel Advisors LLC | 137,500 | $937.8K | 0.00% | −276,807−66.8% | Reduced |
| Soleus Capital Management, L.P. | 157,182 | $1.07M | 0.12% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 165,000 | $1.13M | 0.00% | −37,200−18.4% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 170,003 | $1.16M | 0.01% | −13,945−7.6% | Reduced |
| Renaissance Technologies LLC | 174,800 | $1.19M | 0.00% | −62,290−26.3% | Reduced |
| Morgan Stanley | 245,145 | $1.67M | 0.00% | +137,271+127.3% | Added |
| Charles Schwab Investment Management Inc | 247,506 | $1.69M | 0.00% | −1,938−0.8% | Reduced |
| Jacobs Levy Equity Management, Inc | 252,920 | $1.72M | 0.01% | −277,519−52.3% | Reduced |
| Dimensional Fund Advisors LP | 313,101 | $2.14M | 0.00% | +71,512+29.6% | Added |
| Northern Trust Corp | 325,439 | $2.22M | 0.00% | +2,252+0.7% | Added |
| Los Angeles Capital Management LLC | 356,530 | $2.43M | 0.01% | +52,610+17.3% | Added |
| Goldman Sachs Group Inc | 397,951 | $2.71M | 0.00% | +8,604+2.2% | Added |
| Nuveen Asset Management, LLC | 399,940 | $2.73M | 0.00% | +41,541+11.6% | Added |
| Boothbay Fund Management, LLC | 694,094 | $4.73M | 0.18% | +678,548+4,364.8% | Added |
| Geode Capital Management, LLC | 738,548 | $5.04M | 0.00% | +27,715+3.9% | Added |
| State Street Corp | 761,532 | $5.19M | 0.00% | +20,434+2.8% | Added |
| Acadian Asset Management LLC | 802,381 | $5.47M | 0.02% | −8,880−1.1% | Reduced |
| Caligan Partners LP | 1,048,425 | $7.15M | 2.41% | +1,025,104+4,395.6% | Added |
| D. E. Shaw & Co., Inc. | 1,323,780 | $9.03M | 0.01% | −25,430−1.9% | Reduced |
| Polar Capital Holdings Plc | 2,056,872 | $14.0M | 0.10% | −46,426−2.2% | Reduced |
| Sofinnova Investments, Inc. | 2,194,278 | $15.0M | 0.84% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,244,238 | $15.3M | 0.00% | +12,330+0.6% | Added |
| BlackRock Inc. | 2,917,080 | $19.9M | 0.00% | +443,724+17.9% | Added |
| 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 |