X4 Pharmaceuticals, Inc - XFOR
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| CAXTON CORP | History | No change | 15,557 | 72,650 | 3.92% | 3.92% | 1 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| MORGAN STANLEY | History | No change | 9,461,279 | 44,184 | 0.0% | 0.0% | 2 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| FMR LLC | History | No change | 8,321,657 | 38,862 | 0.0% | 0.0% | 3 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Bain Capital Life Sciences Investors, LLC | History | No change | 7,967,454 | 37,208 | 2.21% | 2.21% | 4 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| PERCEPTIVE ADVISORS LLC | History | No change | 7,933,491 | 37,049 | 0.56% | 0.56% | 5 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Saturn V Capital Management LP | History | No change | 6,973,343 | 32,565 | 4.67% | 4.67% | 6 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Empery Asset Management, LP | History | No change | 6,930,591 | 32,365 | 37.43% | 37.43% | 7 | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Deep Track Capital, LP | History | No change | 5,878,757 | 27,453 | 0.4% | 0.4% | 8 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| BlackRock, Inc. | History | No change | 5,554,906 | 25,941 | 0.0% | 0.0% | 9 | 0 | 0.0% | Q2 2026 | Aug 07, 2026 |
| Kalehua Capital Management LLC | History | No change | 3,722,840 | 17,385 | 12.46% | 12.46% | 10 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | No change | 3,715,859 | 17,353 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Rosalind Advisors, Inc. | History | No change | 3,214,766 | 15,012 | 5.58% | 5.58% | 12 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| BRAIDWELL LP | History | No change | 2,922,754 | 13,649 | 0.5% | 0.5% | 13 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Blackstone Inc. | History | No change | 2,681,922 | 12,524 | 0.04% | 0.04% | 14 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Trails Edge Capital Partners, LP | History | No change | 2,571,478 | 12,008 | 1.91% | 1.91% | 15 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Nantahala Capital Management, LLC | History | No change | 2,449,468 | 11,439 | 0.38% | 0.38% | 16 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| BVF INC/IL | History | No change | 2,233,742 | 10,431 | 0.27% | 0.27% | 17 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | No change | 2,098,047 | 9,800 | 0.0% | 0.0% | 18 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| Venrock Adviser, LLC | History | No change | 1,934,253 | 9,032 | 0.27% | 0.27% | 19 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Samsara BioCapital, LLC | History | No change | 1,395,587 | 6,517 | 0.54% | 0.54% | 20 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| STATE STREET CORP | History | No change | 1,296,017 | 6,052 | 0.0% | 0.0% | 21 | 0 | 0.0% | Q2 2026 | Sep 22, 2026 |
| Woodline Partners LP | History | No change | 1,001,095 | 4,675 | 0.01% | 0.01% | 22 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| GOLDMAN SACHS GROUP INC | History | No change | 916,536 | 4,280 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| NORTHERN TRUST CORP | History | No change | 652,849 | 3,048 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | No change | 572,038 | 2,671 | 0.0% | 0.0% | 25 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | History | No change | 542,128 | 2,531 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Verdad Advisers, LP | History | No change | 352,093 | 1,644 | 1.57% | 1.57% | 27 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | No change | 264,350 | 1,234 | 0.0% | 0.0% | 28 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | No change | 263,264 | 1,229 | 0.0% | 0.0% | 29 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Caption Management, LLC | History | No change | 250,000 | 1,167 | 0.01% | 0.01% | 30 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Stonepine Capital Management, LLC | History | No change | 224,989 | 1,050 | 0.59% | 0.59% | 31 | 0 | 0.0% | Q2 2026 | Aug 17, 2026 |
| Affinity Asset Advisors, LLC | History | No change | 145,000 | 677 | 0.03% | 0.03% | 32 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Bank of New York Mellon Corp | History | Added to | 204,991 | 594 | 0.0% | 0.0% | 33 | +8,651 | 4.41% | Q3 2026 | Nov 05, 2026 |
| Nuveen, LLC | History | No change | 107,389 | 501 | 0.0% | 0.0% | 34 | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Invesco Ltd. | History | No change | 96,772 | 451 | 0.0% | 0.0% | 35 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| RHUMBLINE ADVISERS | History | No change | 95,081 | 444 | 0.0% | 0.0% | 36 | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Susquehanna Portfolio Strategies, LLC | History | No change | 87,282 | 407 | 0.01% | 0.01% | 37 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| ALPS ADVISORS INC | History | Added to | 130,424 | 378 | 0.0% | 0.0% | 38 | +34,698 | 36.25% | Q3 2026 | Nov 02, 2026 |
| DEUTSCHE BANK AG\ | History | No change | 78,885 | 368 | 0.0% | 0.0% | 39 | 0 | 0.0% | Q2 2026 | Aug 07, 2026 |
| GSA CAPITAL PARTNERS LLP | History | No change | 76,314 | 356 | 0.02% | 0.02% | 40 | 0 | 0.0% | Q2 2026 | Aug 06, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | No change | 74,795 | 349 | 0.0% | 0.0% | 41 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 67,712 | 316 | 0.0% | 0.0% | 42 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops LLC | History | No change | 67,078 | 313 | 0.0% | 0.0% | 43 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Palumbo Wealth Management LLC | History | No change | 67,116 | 313 | 0.07% | 0.07% | 44 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | No change | 66,379 | 310 | 0.0% | 0.0% | 45 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| UBS Group AG | History | No change | 58,043 | 271 | 0.0% | 0.0% | 46 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | No change | 51,800 | 241 | 0.0% | 0.0% | 47 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| MetLife Investment Management, LLC | History | No change | 47,969 | 224 | 0.0% | 0.0% | 48 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| BANK OF AMERICA CORP /DE/ | History | No change | 46,861 | 218 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | History | No change | 41,072 | 191 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | No change | 37,073 | 173 | 0.0% | 0.0% | 51 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Jump Financial, LLC | History | No change | 34,253 | 159 | 0.0% | 0.0% | 52 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Vanguard Global Advisers, LLC | History | No change | 32,977 | 154 | 0.0% | 0.0% | 53 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| JPMORGAN CHASE & CO | History | No change | 33,552 | 141 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| CITIGROUP INC | History | Reduced | 42,762 | 124 | 0.0% | 0.0% | 55 | -27,350 | -39.01% | Q3 2026 | Nov 04, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | No change | 23,846 | 111 | 0.0% | 0.0% | 56 | 0 | 0.0% | Q2 2026 | Jul 23, 2026 |
| AXQ CAPITAL, LP | History | No change | 22,880 | 106 | 0.01% | 0.01% | 57 | 0 | 0.0% | Q2 2026 | Aug 06, 2026 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | History | No change | 22,083 | 103 | 0.0% | 0.0% | 58 | 0 | 0.0% | Q2 2026 | Sep 09, 2026 |
| BARCLAYS PLC | History | No change | 19,439 | 90 | 0.0% | 0.0% | 59 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 19,426 | 90 | 0.0% | 0.0% | 60 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| STIFEL FINANCIAL CORP | History | No change | 18,519 | 86 | 0.0% | 0.0% | 61 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | No change | 18,100 | 84 | 0.0% | 0.0% | 62 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| INTECH INVESTMENT MANAGEMENT LLC | History | No change | 17,290 | 80 | 0.0% | 0.0% | 63 | 0 | 0.0% | Q2 2026 | Aug 10, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 16,500 | 77 | 0.0% | 0.0% | 64 | 0 | 0.0% | Q2 2026 | Jul 29, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 16,384 | 76 | 0.0% | 0.0% | 65 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| VOYA INVESTMENT MANAGEMENT LLC | History | No change | 15,838 | 73 | 0.0% | 0.0% | 66 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| WINTON GROUP Ltd | History | No change | 14,400 | 67 | 0.0% | 0.0% | 67 | 0 | 0.0% | Q2 2026 | Aug 07, 2026 |
| ALLIANCEBERNSTEIN L.P. | History | No change | 14,580 | 60 | 0.0% | 0.0% | 68 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| PRUDENTIAL FINANCIAL INC | History | No change | 12,500 | 58 | 0.0% | 0.0% | 69 | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| Legal & General Group Plc | History | No change | 7,858 | 36 | 0.0% | 0.0% | 70 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Tower Research Capital LLC (TRC) | History | No change | 7,745 | 36 | 0.0% | 0.0% | 71 | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 7,338 | 34 | 0.0% | 0.0% | 72 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Russell Investments Group, Ltd. | History | No change | 7,178 | 33 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q2 2026 | Aug 06, 2026 |
| Creative Planning | History | Reduced | 11,308 | 32 | 0.0% | 0.0% | 74 | -2,564 | -18.48% | Q3 2026 | Nov 02, 2026 |
| ProShare Advisors LLC | History | Reduced | 10,533 | 30 | 0.0% | 0.0% | 75 | -55 | -0.52% | Q3 2026 | Oct 28, 2026 |
| Pettinga Financial Advisors LLC | History | No change | 10,000 | 29 | 0.0% | 0.01% | 76 | 0 | 0.0% | Q3 2026 | Oct 13, 2026 |
| ROYAL BANK OF CANADA | History | No change | 2,559 | 12 | 0.0% | 0.0% | 77 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | No change | 1,759 | 8 | 0.0% | 0.0% | 78 | 0 | 0.0% | Q2 2026 | Aug 07, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | No change | 1,113 | 5 | 0.0% | 0.0% | 79 | 0 | 0.0% | Q2 2026 | Aug 24, 2026 |
| Sterling Capital Management LLC | History | Added to | 1,652 | 4 | 0.0% | 0.0% | 80 | +23 | 1.41% | Q3 2026 | Oct 22, 2026 |
| GROUP ONE TRADING LLC | History | No change | 712 | 3 | 0.0% | 0.0% | 81 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Farther Finance Advisors, LLC | History | New | 789 | 2 | 0.0% | — | 83 | +789 | New | Q3 2026 | Oct 08, 2026 |
| Bleichroeder LP | History | No change | 595 | 2 | 0.0% | 0.0% | 82 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| SIMPLEX TRADING, LLC | History | New | 424 | 1 | 0.0% | — | 84 | +424 | New | Q3 2026 | Nov 04, 2026 |
| GAMMA Investing LLC | History | New | 385 | 1 | 0.0% | — | 85 | +385 | New | Q3 2026 | Oct 08, 2026 |
| Indivisible Partners | History | Closed out | 0 | 0 | — | 0.0% | — | -10,000 | -100.0% | Q3 2026 | Oct 26, 2026 |
| Caitong International Asset Management Co., Ltd | History | Reduced | 11 | 0 | — | — | — | -19 | -63.33% | Q3 2026 | Oct 29, 2026 |
| SBI Securities Co., Ltd. | History | Added to | 11 | 0 | — | — | — | +2 | 22.22% | Q3 2026 | Oct 21, 2026 |
| Root Financial Partners, LLC | History | New | 1 | 0 | — | — | — | +1 | New | Q3 2026 | Oct 21, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | No change | 38 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Rockefeller Capital Management L.P. | History | No change | 33 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| HighMark Wealth Management LLC | History | No change | 6 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| Blue Trust, Inc. | History | No change | 284 | 0 | — | 0.0% | — | 0 | 0.0% | Q3 2026 | Oct 15, 2026 |