X4 PharmaceuticalsXFOR
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 40 institutions reported holding X4 Pharmaceuticals Inc. (XFOR) in their 13F filings, down 9 from Q2 2025. 11 opened new positions and 21 sold out. The largest holders were Bain Capital Life Sciences Investors, LLC ($8.3M), BVF Inc. ($7.6M) and Nantahala Capital Management, LLC ($7.6M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Steve Cohen (0.0% of Point72 Asset Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- X4 Pharmaceuticals Inc.
- CUSIP
- 98420X202
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 11 | $31.5M |
| Exits | 21 | $892K |
All 13F filers, Q2 2025 → Q3 2025: 12,180,034 shares bought and 678,701 shares sold, net +11,501,333 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 40 holders
| Bain Capital Life Sciences Investors, LLC | 0.55% | Add +332.1% | 2,436,588 | $8.3M |
| BVF Inc. | 0.31% | New | 2,233,742 | $7.6M |
| Nantahala Capital Management, LLC | 0.47% | New | 2,228,350 | $7.6M |
| Rosalind Advisors, Inc. | 1.87% | New | 1,544,607 | $5.3M |
| Deep Track Capital, LP | 0.11% | New | 1,122,484 | $3.8M |
| Stonepine Capital Management, LLC | 2.94% | New | 1,056,338 | $3.6M |
| Kingdon Capital Management, L.L.C. | 0.50% | Add +300.0% | 933,332 | $3.2M |
| Stempoint Capital LP | 0.38% | New | 555,411 | $1.9M |
| Vanguard Group Inc. | 0.00% | Add +77.0% | 410,485 | $1.4M |
| Boothbay Fund Management, LLC | 0.03% | New | 343,963 | $1.2M |
| Pale Fire Capital SE | 0.07% | Add +201.2% | 180,851 | $619K |
| UBS Group AG | 0.00% | Add +45.4% | 159,835 | $547K |
| Palumbo Wealth Management LLC | 0.10% | New | 95,327 | $326K |
| Geode Capital Management, LLC | 0.00% | Add +62.1% | 79,658 | $272K |
| Millennium Management | 0.00% | Reduce -17.0% | 64,795 | $222K |
| BlackRock, Inc. | 0.00% | Reduce -65.4% | 61,934 | $212K |
| State Street Corp. | 0.00% | Add +149.3% | 38,734 | $132K |
| Point72 Asset Management | 0.00% | Reduce 0.0% | 21,666 | $74K |
| Bank of America Corp. | 0.00% | Reduce -76.0% | 19,304 | $66K |
| Renaissance Technologies | 0.00% | Add +10.4% | 19,177 | $66K |
| Two Sigma Investments, LP | 0.00% | New | 13,868 | $47K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +105.3% | 10,679 | $37K |
| Group One Trading LLC | 0.00% | No change | 3,998 | $14K |
| Morgan Stanley | 0.00% | Reduce -65.9% | 3,728 | $13K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | New | 2,914 | $10K |
| Royal Bank of Canada | 0.00% | Reduce -17.9% | 2,533 | $9K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 2,166 | $7K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -1.9% | 1,759 | $6K |
| TD Waterhouse Canada Inc. | 0.00% | No change | 1,500 | $5K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -92.5% | 729 | $2K |
| Bleichroeder LP | 0.00% | No change | 595 | $2K |
| BNP Paribas Financial Markets | 0.00% | Reduce -12.9% | 554 | $2K |
| Blue Trust, Inc. | 0.00% | No change | 284 | $971 |
| SBI Securities Co., Ltd. | 0.00% | No change | 216 | $739 |
| Jones Financial Companies LLLP | 0.00% | No change | 38 | $131 |
| JPMorgan Chase & Co. | 0.00% | No change | 33 | $113 |
| NewEdge Advisors, LLC | 0.00% | No change | 33 | $113 |
| Rockefeller Capital Management L.P. | 0.00% | New | 33 | $113 |
| Citigroup Inc. | 0.00% | Reduce -95.8% | 32 | $109 |
| HighMark Wealth Management LLC | 0.00% | No change | 6 | $21 |
"% of holder's portfolio" is XFOR's weight in each manager's 13F, not the share of X4 Pharmaceuticals Inc. the manager owns.