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 2025
Institutional positions in Y-mAbs Therapeutics, Inc. as of Jun 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
- Institutional holders
- 97
- −6 vs. Q1 2025
- Shares held
- 27.9M
- −901.5K (−3.1%) vs. Q1 2025
- Total value
- $125.9M
- −$1.76M (−1.4%) vs. Q1 2025
- New holders
- 13
- 29 more added
- Sold out
- 19
- 36 more reduced
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Y-mAbs Therapeutics, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Paradigm Biocapital Advisors LP | 4,236,346 | $19.1M | 0.82% | 00.0% | Unchanged |
| Acorn Capital Advisors, LLC | 3,418,995 | $15.4M | 10.09% | +183,608+5.7% | Added |
| BlackRock, Inc. | 2,748,077 | $12.4M | 0.00% | −153,948−5.3% | Reduced |
| Caligan Partners LP | 2,342,609 | $10.6M | 2.05% | 00.0% | Unchanged |
| Sofinnova Investments, Inc. | 2,194,278 | $9.90M | 0.67% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,943,285 | $8.76M | 0.00% | −3,224−0.2% | Reduced |
| Polar Capital Holdings Plc | 1,789,800 | $8.07M | 0.04% | −41,200−2.3% | Reduced |
| Geode Capital Management, LLC | 848,461 | $3.83M | 0.00% | −1,039−0.1% | Reduced |
| State Street Corp | 780,145 | $3.52M | 0.00% | −8,876−1.1% | Reduced |
| Boothbay Fund Management, LLC | 693,693 | $3.13M | 0.10% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 516,857 | $2.33M | 0.00% | −32,809−6.0% | Reduced |
| Dimensional Fund Advisors LP | 412,246 | $1.86M | 0.00% | −6,308−1.5% | Reduced |
| Nantahala Capital Management, LLC | 351,878 | $1.59M | 0.11% | +351,878 | New |
| Soleus Capital Management, L.P. | 349,982 | $1.58M | 0.11% | 00.0% | Unchanged |
| Northern Trust Corp | 308,130 | $1.39M | 0.00% | −19,771−6.0% | Reduced |
| Morgan Stanley | 292,567 | $1.32M | 0.00% | −207,594−41.5% | Reduced |
| Stonepine Capital Management, LLC | 285,300 | $1.29M | 1.27% | +154,140+117.5% | Added |
| Charles Schwab Investment Management Inc | 278,179 | $1.25M | 0.00% | +569+0.2% | Added |
| Bank of America Corp | 274,164 | $1.24M | 0.00% | −8,154−2.9% | Reduced |
| AQR Capital Management LLC | 252,142 | $1.14M | 0.00% | +87,354+53.0% | Added |
| UBS Group AG | 229,072 | $1.03M | 0.00% | +137,496+150.1% | Added |
| Goldman Sachs Group Inc | 212,751 | $959.5K | 0.00% | +10,975+5.4% | Added |
| Citadel Advisors LLC | 207,642 | $936.5K | 0.00% | +53,687+34.9% | Added |
| Gsa Capital Partners LLP | 186,062 | $839.0K | 0.06% | +165,431+801.9% | Added |
| Renaissance Technologies LLC | 164,100 | $740.1K | 0.00% | −92,606−36.1% | Reduced |
| JPMorgan Chase & Co | 164,055 | $739.9K | 0.00% | −83,387−33.7% | Reduced |
| Infinitum Asset Management, LLC | 155,529 | $701.4K | 0.16% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 142,641 | $643.3K | 0.00% | −94,870−39.9% | Reduced |
| Millennium Management LLC | 139,955 | $631.2K | 0.00% | −326,665−70.0% | Reduced |
| Two Sigma Investments, LP | 125,298 | $565.1K | 0.00% | −29,487−19.1% | Reduced |
| Federated Hermes, Inc. | 119,425 | $538.6K | 0.00% | −34,028−22.2% | Reduced |
| Two Sigma Advisers, LP | 115,700 | $521.8K | 0.00% | −27,600−19.3% | Reduced |
| Rice Hall James & Associates, LLC | 109,604 | $494.3K | 0.03% | +5,962+5.8% | Added |
| Bank of New York Mellon Corp | 99,352 | $448.1K | 0.00% | +6,878+7.4% | Added |
| BNP Paribas Arbitrage, SA | 94,383 | $425.7K | 0.00% | −1,119−1.2% | Reduced |
| Nuveen, LLC | 93,418 | $421.3K | 0.00% | −19,065−16.9% | Reduced |
| XTX Topco Ltd | 86,440 | $389.8K | 0.02% | −5,014−5.5% | Reduced |
| Barclays PLC | 72,842 | $328.5K | 0.00% | +26,084+55.8% | Added |
| Cubist Systematic Strategies, LLC | 69,908 | $315.3K | 0.00% | −85,614−55.0% | Reduced |
| Rhumbline Advisers | 68,399 | $308.5K | 0.00% | +14,490+26.9% | Added |
| STRS Ohio | 62,400 | $281.4K | 0.00% | +19,000+43.8% | Added |
| Jump Financial, LLC | 61,500 | $277.4K | 0.00% | +23,421+61.5% | Added |
| Jane Street Group, LLC | 60,873 | $274.5K | 0.00% | +60,873 | New |
| Alliancebernstein L.P. | 59,380 | $267.8K | 0.00% | +4,600+8.4% | Added |
| Bridgeway Capital Management, LLC | 55,700 | $251.2K | 0.01% | +30,800+123.7% | Added |
| State of Wisconsin Investment Board | 51,336 | $231.5K | 0.00% | +51,336 | New |
| Susquehanna International Group, LLP | 51,090 | $230.4K | 0.00% | −9,570−15.8% | Reduced |
| Sapient Capital LLC | 43,700 | $197.1K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 42,833 | $193.2K | 0.00% | +10,286+31.6% | Added |
| Marshall Wace, LLP | 40,181 | $181.2K | 0.00% | +40,181 | New |
| Quest Partners LLC | 38,925 | $175.6K | 0.02% | 00.0% | Unchanged |
| FMR LLC | 30,868 | $139.2K | 0.00% | +1,607+5.5% | Added |
| Deutsche Bank AG | 28,803 | $129.9K | 0.00% | 00.0% | Unchanged |
| Alps Advisors Inc | 24,429 | $110.2K | 0.00% | −8,880−26.7% | Reduced |
| MetLife Investment Management | 21,928 | $98.9K | 0.00% | +4,852+28.4% | Added |
| Intech Investment Management LLC | 21,674 | $97.8K | 0.00% | −5,021−18.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 21,185 | $95.5K | 0.00% | −936−4.2% | Reduced |
| Wells Fargo & Company | 19,037 | $85.9K | 0.00% | +1,185+6.6% | Added |
| Price T Rowe Associates Inc | 17,211 | $78.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 15,250 | $68.8K | 0.00% | −13,268−46.5% | Reduced |
| State Board of Administration of Florida Retirement System | 14,596 | $65.8K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 13,143 | $59.3K | 0.00% | −796−5.7% | Reduced |
| Squarepoint Ops LLC | 12,233 | $55.2K | 0.00% | −116,294−90.5% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 12,171 | $54.9K | 0.01% | −18,917−60.8% | Reduced |
| HSBC Holdings PLC | 11,948 | $54.8K | 0.00% | +11,948 | New |
| Tower Research Capital LLC (TRC) | 11,494 | $51.8K | 0.00% | +6,474+129.0% | Added |
| Voya Investment Management LLC | 10,742 | $48.4K | 0.00% | +531+5.2% | Added |
| Los Angeles Capital Management LLC | 10,284 | $46.4K | 0.00% | +10,284 | New |
| New York State Common Retirement Fund | 10,110 | $45.6K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 9,097 | $41.0K | 0.00% | +113+1.3% | Added |
| Raymond James Financial Inc | 7,701 | $34.7K | 0.00% | +7,701 | New |
| Police & Firemen's Retirement System of New Jersey | 7,327 | $33.0K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 7,121 | $32.0K | 0.00% | +4,771+203.0% | Added |
| Skopos Labs, Inc. | 4,951 | $22.3K | 0.00% | −972−16.4% | Reduced |
| Legal & General Group Plc | 4,131 | $18.6K | 0.00% | −4,444−51.8% | Reduced |
| Ameritas Investment Partners, Inc. | 3,701 | $16.7K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 2,665 | $12.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 1,750 | $7.89K | 0.00% | +245+16.3% | Added |
| Royal Bank of Canada | 1,612 | $7.00K | 0.00% | −98−5.7% | Reduced |
| EverSource Wealth Advisors, LLC | 1,265 | $5.71K | 0.00% | +1,221+2,775.0% | Added |
| GF Fund Management Co. Ltd. | 1,111 | $5.01K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,217 | $5.00K | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 930 | $4.19K | 0.00% | +930 | New |
| IFP Advisors, Inc | 334 | $1.51K | 0.00% | +334 | Added |
| Point72 (DIFC) Ltd | 287 | $1.29K | 0.00% | −4,771−94.3% | Reduced |
| Daiwa Securities Group Inc. | 162 | $1.00K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 201 | $907 | 0.00% | +201 | New |
| The PNC Financial Services Group, Inc. | 129 | $582 | 0.00% | +129 | New |
| Rialto Wealth Management, LLC | 122 | $551 | 0.00% | +122 | New |
| Nisa Investment Advisors, LLC | 104 | $469 | 0.00% | −155−59.8% | Reduced |
| Sterling Capital Management LLC | 87 | $392 | 0.00% | +49+128.9% | Added |
| Rothschild Investment LLC | 50 | $226 | 0.00% | −60−54.5% | Reduced |
| True Wealth Design, LLC | 29 | $131 | 0.00% | +12+70.6% | Added |
| SBI Securities Co., Ltd. | 16 | $72 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 9 | $41 | 0.00% | +9 | New |
| Advisor Group Holdings, Inc. | 4 | $18 | 0.00% | +4 | New |
| Farther Finance Advisors, LLC | 1 | $5 | 0.00% | −1,997−99.9% | Reduced |
| Pictet Asset Management Holding SA | 0 | $0 | 0.00% | −441,934−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −204,052−100.0% | Sold out |
| Wesbanco Bank Inc | 0 | $0 | 0.00% | −55,000−100.0% | Sold out |