Y-Mabs TherapeuticsYMAB
13F holders, Q1 2025 (March 31)102holders −10
16new positions
26sold out
5famous investors
$4.43avg. 13F price*
At the end of Q1 2025, 102 institutions reported holding Y-Mabs Therapeutics Inc. (YMAB) in their 13F filings, down 10 from Q4 2024. 16 opened new positions and 26 sold out. The largest holders were Paradigm Biocapital Advisors LP ($18.8M), Acorn Capital Advisors, LLC ($14.3M) and BlackRock, Inc. ($12.9M). 5 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Y-Mabs Therapeutics Inc.
- CUSIP
- 984241109
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 16 | $1.6M |
| Exits | 26 | $15.1M |
All 13F filers, Q4 2024 → Q1 2025: 3,394,082 shares bought and 3,386,045 shares sold, net +8,037 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 102 holders
| Paradigm Biocapital Advisors LP | 0.86% | No change | 4,236,346 | $18.8M |
| Acorn Capital Advisors, LLC | 9.56% | Add +13.1% | 3,235,387 | $14.3M |
| BlackRock, Inc. | 0.00% | Reduce -3.2% | 2,902,025 | $12.9M |
| Caligan Partners LP | 2.17% | Add +32.5% | 2,342,609 | $10.4M |
| Sofinnova Investments, Inc. | 0.73% | No change | 2,194,278 | $9.7M |
| Vanguard Group Inc. | 0.00% | Reduce -2.7% | 1,946,509 | $8.6M |
| Polar Capital Holdings Plc | 0.05% | No change | 1,831,000 | $8.1M |
| Geode Capital Management, LLC | 0.00% | Add +3.3% | 849,500 | $3.8M |
| State Street Corp. | 0.00% | Reduce -40.0% | 789,021 | $3.5M |
| Boothbay Fund Management, LLC | 0.11% | No change | 693,693 | $3.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -10.6% | 549,666 | $2.4M |
| Morgan Stanley | 0.00% | Add +55.9% | 500,161 | $2.2M |
| Millennium Management | 0.00% | Add +1216.4% | 466,620 | $2.1M |
| Pictet Asset Management Holding SA | 0.00% | Reduce -41.6% | 441,934 | $2.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -9.7% | 418,554 | $1.9M |
| Soleus Capital Management, L.P. | 0.12% | No change | 349,982 | $1.6M |
| Northern Trust Corp. | 0.00% | Reduce -8.7% | 327,901 | $1.5M |
| Bank of America Corp. | 0.00% | Add +122.0% | 282,318 | $1.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.4% | 277,610 | $1.2M |
| Renaissance Technologies | 0.00% | Add +95.1% | 256,706 | $1.1M |
| JPMorgan Chase & Co. | 0.00% | Add +153.4% | 247,442 | $1.1M |
| Jacobs Levy Equity Management, Inc. | 0.00% | Add +58.7% | 237,511 | $1.1M |
| Wellington Management Group LLP | 0.00% | Add +53.1% | 204,052 | $904K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -7.9% | 201,776 | $894K |
| AQR Capital Management | 0.00% | Add +869.3% | 164,788 | $730K |
| Infinitum Asset Management, LLC | 0.22% | No change | 155,529 | $689K |
| Cubist Systematic Strategies, LLC | 0.01% | Add +223.9% | 155,522 | $689K |
| Two Sigma Investments, LP | 0.00% | Add +75.2% | 154,785 | $686K |
| Citadel Advisors | 0.00% | Reduce -30.6% | 153,955 | $682K |
| Federated Hermes, Inc. | 0.00% | Add +245.0% | 153,453 | $680K |
| Two Sigma Advisers, LP | 0.00% | Add +93.9% | 143,300 | $635K |
| Stonepine Capital Management, LLC | 0.57% | New | 131,160 | $581K |
| Squarepoint Ops LLC | 0.00% | Add +24.8% | 128,527 | $569K |
| Nuveen, LLC | 0.00% | — | 112,483 | $498K |
| Rice Hall James & Associates, LLC | 0.03% | Reduce -4.5% | 103,642 | $459K |
| BNP Paribas Financial Markets | 0.00% | Add +1859.4% | 95,502 | $423K |
| Bank of New York Mellon Corp | 0.00% | Add +0.0% | 92,474 | $410K |
| UBS Group AG | 0.00% | Add +135.2% | 91,576 | $406K |
| XTX Topco Ltd | 0.02% | Add +340.4% | 91,454 | $405K |
| Susquehanna International Group, LLP | 0.00% | Add +112.9% | 60,660 | $269K |
| Wesbanco Bank Inc. | 0.01% | New | 55,000 | $244K |
| Alliancebernstein L.P. | 0.00% | No change | 54,780 | $243K |
| Rhumbline Advisers | 0.00% | Add +4.8% | 53,909 | $239K |
| Barclays PLC | 0.00% | Reduce -38.4% | 46,758 | $207K |
| Sapient Capital LLC | 0.00% | No change | 43,700 | $194K |
| STRS Ohio | 0.00% | No change | 43,400 | $192K |
| AlphaQuest LLC | 0.02% | Add +43.5% | 38,925 | $172K |
| Jump Financial, LLC | 0.00% | Add +14.1% | 38,079 | $169K |
| Virtus Investment Advisers, LLC | 0.04% | New | 36,751 | $163K |
| Alps Advisors Inc. | 0.00% | Reduce -8.0% | 33,309 | $148K |
| Invesco Ltd. | 0.00% | Add +118.1% | 32,547 | $144K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.04% | New | 31,088 | $138K |
| FMR LLC | 0.00% | Reduce -43.4% | 29,261 | $130K |
| Deutsche Bank AG | 0.00% | Reduce -10.7% | 28,803 | $128K |
| Citigroup Inc. | 0.00% | Reduce -42.1% | 28,518 | $126K |
| Exchange Traded Concepts, LLC | 0.00% | Add +107.9% | 26,762 | $119K |
| Intech Investment Management LLC | 0.00% | Add +20.4% | 26,695 | $118K |
| Man Group plc | 0.00% | New | 26,004 | $115K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -50.1% | 24,900 | $110K |
| Principal Financial Group Inc. | 0.00% | Add +1.1% | 22,434 | $99K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -3.0% | 22,121 | $98K |
| Gsa Capital Partners LLP | 0.01% | New | 20,631 | $91K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.5% | 18,305 | $81K |
| Wells Fargo & Company | 0.00% | Add +2.3% | 17,852 | $79K |
| T. Rowe Price Associates Inc. | 0.00% | Add +22.4% | 17,211 | $77K |
| MetLife Investment Management, LLC | 0.00% | Reduce -22.9% | 17,076 | $76K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 14,596 | $65K |
| Bayesian Capital Management, LP | 0.01% | New | 14,382 | $64K |
| Atom Investors LP | 0.01% | New | 14,141 | $63K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +0.9% | 13,939 | $62K |
| SG Americas Securities, LLC | 0.00% | Reduce -25.1% | 13,284 | $59K |
| EntryPoint Capital, LLC | 0.03% | New | 12,654 | $56K |
| Corton Capital Inc. | 0.18% | New | 12,432 | $55K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | New | 11,084 | $49K |
| Voya Investment Management LLC | 0.00% | Reduce -12.7% | 10,211 | $45K |
| New York State Common Retirement Fund | 0.00% | No change | 10,110 | $45K |
| ProShare Advisors LLC | 0.00% | Reduce -20.1% | 10,109 | $45K |
| China Universal Asset Management Co., Ltd. | 0.00% | Reduce -5.4% | 8,984 | $40K |
| Legal & General Group Plc | 0.00% | Reduce -75.5% | 8,575 | $38K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 7,327 | $32K |
| Brooklyn Investment Group | 0.01% | Add +4563.8% | 5,923 | $26K |
| Point72 (DIFC) Ltd | 0.00% | Add +936.5% | 5,058 | $22K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +205.7% | 5,020 | $22K |
| Lazard Asset Management LLC | 0.00% | New | 4,812 | $21K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,701 | $16K |
| California State Teachers Retirement System | 0.00% | Reduce -91.0% | 2,665 | $12K |
| Cwm, LLC | 0.00% | Add +3355.9% | 2,350 | $10K |
| Farther Finance Advisors, LLC | 0.00% | Add +199700.0% | 1,998 | $9K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +0.8% | 1,505 | $7K |
| Royal Bank of Canada | 0.00% | Reduce -96.9% | 1,710 | $7K |
| Amalgamated Bank | 0.00% | No change | 1,217 | $5K |
| GF Fund Management Co. LTD. | 0.00% | Add +18.2% | 1,111 | $5K |
| Nisa Investment Advisors, LLC | 0.00% | Add +379.6% | 259 | $1K |
| Daiwa Securities Group Inc. | 0.00% | No change | 162 | $1K |
| Simplex Trading, LLC | 0.00% | Reduce -75.5% | 437 | $1K |
| Rothschild Investment LLC | 0.00% | Add +175.0% | 110 | $487 |
| SouthState Bank Corp | 0.00% | New | 68 | $302 |
| CoreCap Advisors, LLC | 0.00% | New | 46 | $204 |
| EverSource Wealth Advisors, LLC | 0.00% | New | 44 | $195 |
| Sterling Capital Management LLC | 0.00% | No change | 38 | $168 |
"% of holder's portfolio" is YMAB's weight in each manager's 13F, not the share of Y-Mabs Therapeutics Inc. the manager owns.