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, Q2 2021
Institutional positions in Y-mAbs Therapeutics, Inc. as of Jun 30, 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
- 100
- −17 vs. Q1 2021
- Shares held
- 26.1M
- −370.2K (−1.4%) vs. Q1 2021
- Total value
- $886.9M
- +$82.1M (+10.2%) vs. Q1 2021
- New holders
- 13
- 45 more added
- Sold out
- 30
- 22 more reduced
Compare with Q1 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, Q2 2021
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 4,448,610 | $150.4M | 0.03% | +1,428,152+47.3% | Added |
| BlackRock Inc. | 2,703,691 | $91.4M | 0.00% | +178,915+7.1% | Added |
| Sofinnova Investments, Inc. | 2,194,278 | $74.2M | 4.51% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,635,255 | $55.3M | 0.00% | +36,676+2.3% | Added |
| FMR LLC | 1,548,987 | $52.4M | 0.00% | 00.0% | Unchanged |
| State Street Corp | 1,389,511 | $47.0M | 0.00% | −319,910−18.7% | Reduced |
| Alliancebernstein L.P. | 1,348,596 | $45.6M | 0.02% | +117,258+9.5% | Added |
| Artisan Partners Limited Partnership | 1,318,279 | $44.6M | 0.05% | +3790.0% | Added |
| First Light Asset Management, LLC | 950,192 | $32.1M | 1.93% | +5,939+0.6% | Added |
| Goldman Sachs Group Inc | 820,482 | $27.7M | 0.01% | +2,633+0.3% | Added |
| Cormorant Asset Management, LP | 800,000 | $27.0M | 1.05% | −430,000−35.0% | Reduced |
| Polar Capital Holdings Plc | 585,921 | $19.8M | 0.11% | +577,892+7,197.6% | Added |
| Ashford Capital Management Inc | 583,508 | $19.7M | 1.78% | +75,425+14.8% | Added |
| Geode Capital Management, LLC | 551,047 | $18.6M | 0.00% | +76,929+16.2% | Added |
| Artal Group S.A. | 400,000 | $13.5M | 0.31% | 00.0% | Unchanged |
| Northern Trust Corp | 346,406 | $11.7M | 0.00% | +605+0.2% | Added |
| MPM Oncology Impact Management LP | 337,291 | $11.4M | 1.87% | 00.0% | Unchanged |
| Lombard Odier Asset Management (Switzerland) SA | 320,032 | $10.8M | 0.55% | +138,540+76.3% | Added |
| Oracle Investment Management Inc | 300,642 | $10.2M | 1.41% | −80,000−21.0% | Reduced |
| Candriam Luxembourg S.C.A. | 178,181 | $9.26M | 0.06% | −1,764−1.0% | Reduced |
| New York State Common Retirement Fund | 241,770 | $8.17M | 0.01% | +3,243+1.4% | Added |
| Memorial Sloan Kettering Cancer Center | 216,916 | $7.33M | 4.79% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 202,119 | $6.83M | 0.00% | +11,601+6.1% | Added |
| Tekla Capital Management LLC | 197,820 | $6.69M | 0.22% | 00.0% | Unchanged |
| Citadel Advisors LLC | 175,185 | $5.92M | 0.01% | +83,790+91.7% | Added |
| Brookfield Asset Management Inc. | 166,654 | $5.63M | 0.03% | +58,954+54.7% | Added |
| Nuveen Asset Management, LLC | 161,625 | $5.46M | 0.00% | +33,288+25.9% | Added |
| Soleus Capital Management, L.P. | 144,300 | $4.88M | 0.75% | +144,300 | New |
| Two Sigma Advisers, LP | 135,300 | $4.57M | 0.01% | −104,800−43.6% | Reduced |
| Burrage Capital Management LLC | 114,454 | $3.87M | 3.88% | 00.0% | Unchanged |
| Maven Securities LTD | 102,800 | $3.52M | 0.37% | +37,800+58.2% | Added |
| Rice Hall James & Associates, LLC | 96,774 | $3.27M | 0.12% | −4,254−4.2% | Reduced |
| Morgan Stanley | 92,166 | $3.11M | 0.00% | −122,270−57.0% | Reduced |
| Bank of New York Mellon Corp | 91,626 | $3.10M | 0.00% | −9,284−9.2% | Reduced |
| Bank of America Corp | 82,570 | $2.79M | 0.00% | +20.0% | Added |
| Citigroup Inc | 73,302 | $2.48M | 0.00% | −23,651−24.4% | Reduced |
| Alps Advisors Inc | 57,386 | $1.94M | 0.02% | +57,386 | New |
| Swiss National Bank | 57,300 | $1.94M | 0.00% | +11,000+23.8% | Added |
| California State Teachers Retirement System | 48,177 | $1.63M | 0.00% | +2,169+4.7% | Added |
| Parametric Portfolio Associates LLC | 47,474 | $1.60M | 0.00% | +30,604+181.4% | Added |
| Two Sigma Investments, LP | 46,228 | $1.56M | 0.00% | −227,989−83.1% | Reduced |
| Rafferty Asset Management, LLC | 45,705 | $1.54M | 0.01% | −31,677−40.9% | Reduced |
| Vident Investment Advisory, LLC | 41,609 | $1.41M | 0.04% | +10,170+32.3% | Added |
| State of Wisconsin Investment Board | 41,000 | $1.39M | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 39,083 | $1.32M | 0.00% | −41,382−51.4% | Reduced |
| Allianz Asset Management GmbH | 37,271 | $1.26M | 0.00% | +110.0% | Added |
| JPMorgan Chase & Co | 35,419 | $1.20M | 0.00% | +3,503+11.0% | Added |
| Rhumbline Advisers | 35,021 | $1.18M | 0.00% | −675−1.9% | Reduced |
| Deutsche Bank AG | 27,999 | $946.0K | 0.00% | +1,329+5.0% | Added |
| Hillsdale Investment Management Inc. | 26,699 | $902.0K | 0.07% | +26,699 | New |
| Teachers Retirement System of the State of Kentucky | 25,674 | $868.0K | 0.01% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 25,436 | $860.0K | 0.00% | −3,730−12.8% | Reduced |
| UBS Asset Management Americas Inc | 23,419 | $791.6K | 0.00% | +10,519+81.5% | Added |
| Ensign Peak Advisors, Inc | 22,598 | $764.0K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 20,197 | $683.0K | 0.00% | +2,412+13.6% | Added |
| SEI Investments Co | 19,951 | $674.0K | 0.00% | +850+4.5% | Added |
| American International Group, Inc. | 19,582 | $662.0K | 0.00% | +1,799+10.1% | Added |
| Squarepoint Ops LLC | 18,554 | $627.0K | 0.00% | −18,335−49.7% | Reduced |
| ExodusPoint Capital Management, LP | 17,000 | $575.0K | 0.01% | +17,000 | New |
| ProShare Advisors LLC | 16,894 | $571.0K | 0.00% | +2,724+19.2% | Added |
| Wells Fargo & Company | 16,600 | $562.0K | 0.00% | +2,226+15.5% | Added |
| Susquehanna International Group, LLP | 15,947 | $539.0K | 0.00% | −3,379−17.5% | Reduced |
| Credit Suisse AG | 15,567 | $527.0K | 0.00% | +851+5.8% | Added |
| Royal Bank of Canada | 14,870 | $503.0K | 0.00% | +5,564+59.8% | Added |
| Invesco Ltd. | 13,866 | $468.0K | 0.00% | +5,363+63.1% | Added |
| Virtus ETF Advisers LLC | 13,728 | $464.0K | 0.19% | +1,735+14.5% | Added |
| Voya Investment Management LLC | 13,702 | $463.0K | 0.00% | −4,093−23.0% | Reduced |
| MetLife Investment Management | 13,415 | $453.4K | 0.00% | 00.0% | Unchanged |
| Cna Financial Corp | 13,290 | $449.0K | 0.13% | +910+7.4% | Added |
| DnB Asset Management AS | 12,815 | $433.1K | 0.00% | +12,815 | New |
| DekaBank Deutsche Girozentrale | 12,700 | $430.0K | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 12,310 | $415.0K | 0.00% | +12,310 | New |
| State Board of Administration of Florida Retirement System | 11,019 | $372.0K | 0.00% | +2,174+24.6% | Added |
| Principal Financial Group Inc | 10,036 | $339.0K | 0.00% | +1,148+12.9% | Added |
| Erste Asset Management GmbH | 10,000 | $338.8K | 0.01% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 9,433 | $318.8K | 0.00% | +472+5.3% | Added |
| Allstate Corp | 9,394 | $318.0K | 0.01% | +2,455+35.4% | Added |
| Trexquant Investment LP | 8,690 | $294.0K | 0.02% | −852−8.9% | Reduced |
| Marshall Wace North America L.P. | 8,204 | $277.0K | 0.00% | +8,204 | New |
| Boothbay Fund Management, LLC | 7,935 | $268.0K | 0.01% | +7,935 | New |
| Arizona State Retirement System | 7,065 | $239.0K | 0.00% | +7,065 | New |
| Barclays PLC | 6,854 | $232.0K | 0.00% | −27,147−79.8% | Reduced |
| Amalgamated Bank | 6,599 | $223.0K | 0.00% | +6,599 | New |
| Legal & General Group Plc | 4,831 | $163.0K | 0.00% | +303+6.7% | Added |
| Credit Agricole S A | 3,500 | $118.0K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 2,976 | $100.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 2,645 | $89.0K | 0.00% | 00.0% | Unchanged |
| First Mercantile Trust Co | 2,445 | $83.0K | 0.01% | −304−11.1% | Reduced |
| Tower Research Capital LLC (TRC) | 1,795 | $61.0K | 0.00% | −2,254−55.7% | Reduced |
| BNP Paribas Arbitrage, SA | 1,528 | $51.6K | 0.00% | −8,737−85.1% | Reduced |
| Great West Life Assurance Co | 1,443 | $49.0K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1,352 | $45.0K | 0.00% | +1,247+1,187.6% | Added |
| HighMark Wealth Management LLC | 1,281 | $43.0K | 0.03% | +930+265.0% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 1,000 | $34.0K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 990 | $33.0K | 0.00% | +10+1.0% | Added |
| Macquarie Group Ltd | 471 | $16.0K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 76 | $3.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 62 | $2.00K | 0.00% | +62 | New |
| Signaturefd, LLC | 29 | $1.00K | 0.00% | +29 | New |
| Red Door Wealth Management, LLC | 40 | $1.00K | 0.00% | +40 | New |