X4 Pharmaceuticals, Inc
XFOR- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001501697
In the last 90 days, X4 Pharmaceuticals, Inc insiders filed 0 open-market purchases and 3 sales; 89 institutions reported holding it in 13F filings for Q2 2026, worth $491.9M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in X4 Pharmaceuticals, Inc as of Jun 30, 2026. 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
- 89
- +5 vs. Q1 2026
- Shares held
- 105.3M
- +6.85M (+7.0%) vs. Q1 2026
- Total value
- $491.9M
- +$84.9M (+20.9%) vs. Q1 2026
- New holders
- 32
- 25 more added
- Sold out
- 27
- 13 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting XFOR 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 | 89 | $491.9M |
| Q1 2026 | 84 | $407.0M |
| Q4 2025 | 79 | $357.7M |
| Q3 2025 | 42 | $55.3M |
| Q2 2025 | 52 | $5.33M |
| Q1 2025 | 94 | $23.6M |
| Q4 2024 | 90 | $73.3M |
| Q3 2024 | 98 | $67.4M |
| Q2 2024 | 99 | $60.7M |
| Q1 2024 | 98 | $147.1M |
| Q4 2023 | 93 | $87.1M |
| Q3 2023 | 91 | $122.6M |
| Q2 2023 | 96 | $219.2M |
| Q1 2023 | 59 | $53.7M |
| Q4 2022 | 54 | $60.2M |
| Q3 2022 | 59 | $74.0M |
| Q2 2022 | 51 | $16.6M |
| Q1 2022 | 56 | $30.7M |
| Q4 2021 | 52 | $40.4M |
| Q3 2021 | 52 | $85.7M |
| Q2 2021 | 63 | $111.5M |
| Q1 2021 | 61 | $139.0M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding X4 Pharmaceuticals, Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Morgan Stanley | 9,461,279 | $44.2M | 0.00% | −5,713−0.1% | Reduced |
| FMR LLC | 8,321,657 | $38.9M | 0.00% | +218,257+2.7% | Added |
| Bain Capital Life Sciences Investors, LLC | 7,967,454 | $37.2M | 2.21% | 00.0% | Unchanged |
| Perceptive Advisors LLC | 7,933,491 | $37.0M | 0.58% | +1,195,843+17.7% | Added |
| Kalehua Capital Management LLC | 7,445,680 | $34.8M | 11.09% | 00.0% | Unchanged |
| Saturn V Capital Management LLC | 6,973,343 | $32.6M | 4.67% | +516,697+8.0% | Added |
| Empery Asset Management, LP | 6,930,591 | $32.4M | 37.43% | −2,013,527−22.5% | Reduced |
| Deep Track Capital, LP | 5,878,757 | $27.5M | 0.40% | −460,778−7.3% | Reduced |
| BlackRock, Inc. | 5,554,906 | $25.9M | 0.00% | +4,343,112+358.4% | Added |
| Nantahala Capital Management, LLC | 4,898,936 | $22.9M | 0.69% | +2,449,468+100.0% | Added |
| Vanguard Capital Management LLC | 3,715,859 | $17.4M | 0.00% | +218,247+6.2% | Added |
| NEA Management Company, LLC | 3,233,743 | $15.1M | 0.95% | 00.0% | Unchanged |
| Rosalind Advisors, Inc. | 3,214,766 | $15.0M | 5.64% | 00.0% | Unchanged |
| Braidwell LP | 2,922,754 | $13.6M | 0.50% | −350,200−10.7% | Reduced |
| Blackstone Group Inc. | 2,681,922 | $12.5M | 0.04% | 00.0% | Unchanged |
| Trails Edge Capital Partners, LP | 2,571,478 | $12.0M | 1.91% | 00.0% | Unchanged |
| BVF Inc | 2,233,742 | $10.4M | 0.27% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 2,098,047 | $9.80M | 0.00% | +1,158,321+123.3% | Added |
| VR Adviser, LLC | 1,934,253 | $9.03M | 0.27% | +1,603,728+485.2% | Added |
| Samsara BioCapital, LLC | 1,395,587 | $6.52M | 0.54% | −436,979−23.8% | Reduced |
| State Street Corp | 1,296,017 | $6.05M | 0.00% | +892,483+221.2% | Added |
| Woodline Partners LP | 1,001,095 | $4.68M | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 916,536 | $4.28M | 0.00% | +34,402+3.9% | Added |
| Northern Trust Corp | 652,849 | $3.05M | 0.00% | +474,614+266.3% | Added |
| Vanguard Fiduciary Trust Co | 572,038 | $2.67M | 0.00% | +91,305+19.0% | Added |
| Vanguard Portfolio Management LLC | 542,128 | $2.53M | 0.00% | +542,128 | New |
| Verdad Advisers, LP | 352,093 | $1.64M | 1.57% | +352,093 | New |
| Charles Schwab Investment Management Inc | 263,264 | $1.23M | 0.00% | +196,515+294.4% | Added |
| Stonepine Capital Management, LLC | 224,989 | $1.05M | 0.80% | −110,320−32.9% | Reduced |
| Bank of New York Mellon Corp | 196,340 | $916.9K | 0.00% | +196,340 | New |
| Affinity Asset Advisors, LLC | 145,000 | $677.1K | 0.03% | 00.0% | Unchanged |
| Nuveen, LLC | 107,389 | $501.5K | 0.00% | +107,389 | New |
| Invesco Ltd. | 96,772 | $451.9K | 0.00% | +76,804+384.6% | Added |
| Alps Advisors Inc | 95,726 | $447.0K | 0.00% | +95,726 | New |
| Rhumbline Advisers | 95,081 | $444.0K | 0.00% | +95,081 | New |
| Susquehanna Portfolio Strategies, LLC | 87,282 | $407.6K | 0.01% | −15,317−14.9% | Reduced |
| Deutsche Bank AG | 78,885 | $368.4K | 0.00% | +78,885 | New |
| Gsa Capital Partners LLP | 76,314 | $356.0K | 0.02% | +76,314 | New |
| American Century Companies Inc | 74,795 | $349.3K | 0.00% | +74,795 | New |
| Citigroup Inc | 70,112 | $327.4K | 0.00% | +34,347+96.0% | Added |
| Wells Fargo & Company | 67,712 | $316.2K | 0.00% | +67,712 | New |
| Palumbo Wealth Management LLC | 67,116 | $313.4K | 0.07% | −63,898−48.8% | Reduced |
| Squarepoint Ops LLC | 67,078 | $313.3K | 0.00% | +67,078 | New |
| Price T Rowe Associates Inc | 66,379 | $310.0K | 0.00% | +66,379 | New |
| UBS Group AG | 58,043 | $271.1K | 0.00% | −209,297−78.3% | Reduced |
| Wellington Management Group LLP | 51,800 | $241.9K | 0.00% | +51,800 | New |
| MetLife Investment Management | 47,969 | $224.0K | 0.00% | +47,969 | New |
| Bank of America Corp | 46,861 | $218.8K | 0.00% | −103,815−68.9% | Reduced |
| Point72 Asset Management, L.P. | 41,072 | $191.8K | 0.00% | +41,072 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 37,073 | $173.1K | 0.00% | +37,073 | New |
| Jump Financial, LLC | 34,253 | $160.0K | 0.00% | +21,936+178.1% | Added |
| Vanguard Global Advisers, LLC | 32,977 | $154.0K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 33,552 | $141.9K | 0.00% | +33,519+101,572.7% | Added |
| Police & Firemen's Retirement System of New Jersey | 23,846 | $111.4K | 0.00% | +23,846 | New |
| Axq Capital, LP | 22,880 | $106.8K | 0.01% | +22,880 | New |
| Manufacturers Life Insurance Company, The | 22,083 | $103.1K | 0.00% | +22,083 | New |
| Barclays PLC | 19,439 | $90.8K | 0.00% | +16,625+590.8% | Added |
| Two Sigma Investments, LP | 19,426 | $90.7K | 0.00% | +5,558+40.1% | Added |
| Stifel Financial Corp | 18,519 | $86.5K | 0.00% | −3,270−15.0% | Reduced |
| Renaissance Technologies LLC | 18,100 | $84.5K | 0.00% | +18,100 | New |
| Intech Investment Management LLC | 17,290 | $80.7K | 0.00% | +17,290 | New |
| New York State Common Retirement Fund | 16,500 | $77.1K | 0.00% | +16,500 | New |
| BNP Paribas Arbitrage, SA | 16,384 | $76.5K | 0.00% | +11,628+244.5% | Added |
| Voya Investment Management LLC | 15,838 | $74.0K | 0.00% | +15,838 | New |
| Caxton Corp | 15,557 | $72.7K | 3.92% | 00.0% | Unchanged |
| Winton Group Ltd | 14,400 | $67.2K | 0.00% | +3,800+35.8% | Added |
| Susquehanna International Group, LLP | 14,050 | $65.6K | 0.00% | −842,172−98.4% | Reduced |
| Creative Planning | 13,872 | $64.8K | 0.00% | +53+0.4% | Added |
| Alliancebernstein L.P. | 14,580 | $60.2K | 0.00% | +14,580 | New |
| Prudential Financial Inc | 12,500 | $58.4K | 0.00% | +12,500 | New |
| ProShare Advisors LLC | 10,588 | $49.4K | 0.00% | +10,588 | New |
| Indivisible Partners | 10,000 | $46.9K | 0.00% | 00.0% | Unchanged |
| Pettinga Financial Advisors, LLC | 10,000 | $46.7K | 0.01% | +10,000 | New |
| Legal & General Group Plc | 7,858 | $36.7K | 0.00% | +7,858 | New |
| Tower Research Capital LLC (TRC) | 7,745 | $36.2K | 0.00% | +7,565+4,202.8% | Added |
| Ameritas Investment Partners, Inc. | 7,338 | $34.3K | 0.00% | +7,338 | New |
| Russell Investments Group, Ltd. | 7,178 | $33.5K | 0.00% | +6,449+884.6% | Added |
| Royal Bank of Canada | 2,559 | $12.0K | 0.00% | +2,444+2,125.2% | Added |
| The PNC Financial Services Group, Inc. | 1,759 | $8.21K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,629 | $7.61K | 0.00% | +1,629 | New |
| California State Teachers Retirement System | 1,113 | $5.20K | 0.00% | +1,113 | New |
| Group One Trading, L.P. | 712 | $3.33K | 0.00% | 00.0% | Unchanged |
| Bleichroeder LP | 595 | $2.78K | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 284 | $1.33K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 33 | $154 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 38 | $153 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 30 | $140 | 0.00% | +30 | New |
| SBI Securities Co., Ltd. | 9 | $42 | 0.00% | −45−83.3% | Reduced |
| HighMark Wealth Management LLC | 6 | $28 | 0.00% | 00.0% | Unchanged |
| StemPoint Capital LP | 0 | $0 | 0.00% | −1,701,484−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −1,210,514−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −336,834−100.0% | Sold out |
| Acorn Capital Advisors, LLC | 0 | $0 | 0.00% | −234,039−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −218,954−100.0% | Sold out |
| Pale Fire Capital SE | 0 | $0 | 0.00% | −167,590−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −127,321−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −36,221−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −57,300−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −50,287−100.0% | Sold out |
| Catalyst Funds Management Pty Ltd | 0 | $0 | 0.00% | −47,383−100.0% | Sold out |