X4 PharmaceuticalsXFOR
13F holders, Q2 2026 (June 30)88holders +6
32new positions
26sold out
2famous investors
$4.67avg. 13F price*
At the end of Q2 2026, 88 institutions reported holding X4 Pharmaceuticals Inc. (XFOR) in their 13F filings, up 6 from Q1 2026. 32 opened new positions and 26 sold out. The largest holders were Morgan Stanley ($44.2M), FMR LLC ($38.9M) and Bain Capital Life Sciences Investors, LLC ($37.2M). 2 famous investors held it, including 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 Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 32 | $10.3M |
| Exits | 26 | $13.7M |
All 13F filers, Q1 2026 → Q2 2026: 13,364,259 shares bought and 7,878,492 shares sold, net +5,485,767 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 88 holders
| Morgan Stanley | 0.00% | Reduce -0.1% | 9,461,279 | $44.2M |
| FMR LLC | 0.00% | Add +2.7% | 8,321,657 | $38.9M |
| Bain Capital Life Sciences Investors, LLC | 2.21% | No change | 7,967,454 | $37.2M |
| Perceptive Advisors LLC | 0.58% | Add +17.8% | 7,933,491 | $37.0M |
| Saturn V Capital Management LP | 4.67% | Add +8.0% | 6,973,343 | $32.6M |
| Empery Asset Management, LP | 38.02% | Reduce -22.5% | 6,930,591 | $32.4M |
| Deep Track Capital, LP | 0.40% | Reduce -7.3% | 5,878,757 | $27.5M |
| BlackRock, Inc. | 0.00% | Add +358.4% | 5,554,906 | $25.9M |
| Kalehua Capital Management LLC | 9.99% | No change | 3,722,840 | $17.4M |
| Vanguard Capital Management LLC | 0.00% | Add +6.2% | 3,715,859 | $17.4M |
| Rosalind Advisors, Inc. | 5.64% | No change | 3,214,766 | $15.0M |
| Braidwell LP | 0.52% | Reduce -10.7% | 2,922,754 | $13.6M |
| Blackstone Inc. | 0.04% | No change | 2,681,922 | $12.5M |
| Trails Edge Capital Partners, LP | 1.91% | No change | 2,571,478 | $12.0M |
| Nantahala Capital Management, LLC | 0.69% | No change | 2,449,468 | $11.4M |
| BVF Inc. | 0.27% | No change | 2,233,742 | $10.4M |
| Geode Capital Management, LLC | 0.00% | Add +123.3% | 2,098,047 | $9.8M |
| Venrock Adviser, LLC | 0.27% | Add +485.2% | 1,934,253 | $9.0M |
| Samsara Biocapital, LLC | 0.54% | Reduce -23.9% | 1,395,587 | $6.5M |
| State Street Corp. | 0.00% | Add +221.2% | 1,296,017 | $6.1M |
| Woodline Partners LP | 0.01% | No change | 1,001,095 | $4.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +3.9% | 916,536 | $4.3M |
| Northern Trust Corp. | 0.00% | Add +266.3% | 652,849 | $3.0M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +19.0% | 572,038 | $2.7M |
| Vanguard Portfolio Management LLC | 0.00% | New | 542,128 | $2.5M |
| Verdad Advisers, LP | 1.57% | New | 352,093 | $1.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +294.4% | 263,264 | $1.2M |
| Stonepine Capital Management, LLC | 0.80% | Reduce -32.9% | 224,989 | $1.1M |
| Bank of New York Mellon Corp | 0.00% | New | 196,340 | $917K |
| Affinity Asset Advisors, LLC | 0.03% | No change | 145,000 | $677K |
| Nuveen, LLC | 0.00% | New | 107,389 | $502K |
| Invesco Ltd. | 0.00% | Add +384.6% | 96,772 | $452K |
| Alps Advisors Inc. | 0.00% | New | 95,726 | $447K |
| Rhumbline Advisers | 0.00% | New | 95,081 | $444K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Reduce -14.9% | 87,282 | $408K |
| Deutsche Bank AG | 0.00% | New | 78,885 | $368K |
| Gsa Capital Partners LLP | 0.02% | New | 76,314 | $356K |
| American Century Companies Inc. | 0.00% | New | 74,795 | $349K |
| Citigroup Inc. | 0.00% | Add +96.0% | 70,112 | $327K |
| Wells Fargo & Company | 0.00% | New | 67,712 | $316K |
| Palumbo Wealth Management LLC | 0.07% | Reduce -48.8% | 67,116 | $313K |
| Squarepoint Ops LLC | 0.00% | New | 67,078 | $313K |
| T. Rowe Price Associates Inc. | 0.00% | New | 66,379 | $310K |
| UBS Group AG | 0.00% | Reduce -78.3% | 58,043 | $271K |
| Wellington Management Group LLP | 0.00% | New | 51,800 | $242K |
| MetLife Investment Management, LLC | 0.00% | New | 47,969 | $224K |
| Bank of America Corp. | 0.00% | Reduce -68.9% | 46,861 | $219K |
| Point72 Asset Management | 0.00% | New | 41,072 | $192K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | New | 37,073 | $173K |
| Jump Financial, LLC | 0.00% | Add +178.1% | 34,253 | $160K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 32,977 | $154K |
| JPMorgan Chase & Co. | 0.00% | Add +101572.7% | 33,552 | $142K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | New | 23,846 | $111K |
| Axq Capital, LP | 0.01% | New | 22,880 | $107K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 22,083 | $103K |
| Barclays PLC | 0.00% | Add +590.8% | 19,439 | $91K |
| Two Sigma Investments, LP | 0.00% | Add +40.1% | 19,426 | $91K |
| Stifel Financial Corp. | 0.00% | Reduce -15.0% | 18,519 | $86K |
| Renaissance Technologies | 0.00% | New | 18,100 | $85K |
| Intech Investment Management LLC | 0.00% | New | 17,290 | $81K |
| New York State Common Retirement Fund | 0.00% | New | 16,500 | $77K |
| BNP Paribas Financial Markets | 0.00% | Add +244.5% | 16,384 | $77K |
| Voya Investment Management LLC | 0.00% | New | 15,838 | $74K |
| Caxton Corp. | 3.92% | No change | 15,557 | $73K |
| WINTON GROUP Ltd | 0.00% | Add +35.9% | 14,400 | $67K |
| Susquehanna International Group, LLP | 0.00% | Reduce -98.4% | 14,050 | $66K |
| Creative Planning | 0.00% | Add +0.4% | 13,872 | $65K |
| Alliancebernstein L.P. | 0.00% | New | 14,580 | $60K |
| Prudential Financial Inc. | 0.00% | New | 12,500 | $58K |
| ProShare Advisors LLC | 0.00% | New | 10,588 | $49K |
| Indivisible Partners | 0.00% | No change | 10,000 | $47K |
| Pettinga Financial Advisors LLC | 0.01% | New | 10,000 | $47K |
| Legal & General Group Plc | 0.00% | New | 7,858 | $37K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +4202.8% | 7,745 | $36K |
| Ameritas Investment Partners, Inc. | 0.00% | New | 7,338 | $34K |
| Russell Investments Group, Ltd. | 0.00% | Add +884.6% | 7,178 | $34K |
| Royal Bank of Canada | 0.00% | Add +2125.2% | 2,559 | $12K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 1,759 | $8K |
| Sterling Capital Management LLC | 0.00% | New | 1,629 | $8K |
| California State Teachers Retirement System | 0.00% | New | 1,113 | $5K |
| Group One Trading LLC | 0.00% | No change | 712 | $3K |
| Bleichroeder LP | 0.00% | No change | 595 | $3K |
| Blue Trust, Inc. | 0.00% | No change | 284 | $1K |
| Rockefeller Capital Management L.P. | 0.00% | No change | 33 | $154 |
| Jones Financial Companies LLLP | 0.00% | No change | 38 | $153 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 30 | $140 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -83.3% | 9 | $42 |
| HighMark Wealth Management LLC | 0.00% | No change | 6 | $28 |
"% of holder's portfolio" is XFOR's weight in each manager's 13F, not the share of X4 Pharmaceuticals Inc. the manager owns.