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
- 99.2M
- +5.25M (+5.6%) vs. Q1 2026
- Total value
- $463.0M
- +$75.0M (+19.3%) vs. Q1 2026
- New holders
- 32
- 24 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 |
|---|---|---|---|---|---|
| HighMark Wealth Management LLC | 6 | $28 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 9 | $42 | 0.00% | −45−83.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 30 | $140 | 0.00% | +30 | New |
| Jones Financial Companies LLLP | 38 | $153 | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 33 | $154 | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 284 | $1.33K | 0.00% | 00.0% | Unchanged |
| Bleichroeder LP | 595 | $2.78K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 712 | $3.33K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 1,113 | $5.20K | 0.00% | +1,113 | New |
| Sterling Capital Management LLC | 1,629 | $7.61K | 0.00% | +1,629 | New |
| The PNC Financial Services Group, Inc. | 1,759 | $8.21K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 2,559 | $12.0K | 0.00% | +2,444+2,125.2% | Added |
| Russell Investments Group, Ltd. | 7,178 | $33.5K | 0.00% | +6,449+884.6% | Added |
| Ameritas Investment Partners, Inc. | 7,338 | $34.3K | 0.00% | +7,338 | New |
| Tower Research Capital LLC (TRC) | 7,745 | $36.2K | 0.00% | +7,565+4,202.8% | Added |
| Legal & General Group Plc | 7,858 | $36.7K | 0.00% | +7,858 | New |
| Pettinga Financial Advisors, LLC | 10,000 | $46.7K | 0.01% | +10,000 | New |
| Indivisible Partners | 10,000 | $46.9K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 10,588 | $49.4K | 0.00% | +10,588 | New |
| Prudential Financial Inc | 12,500 | $58.4K | 0.00% | +12,500 | New |
| Alliancebernstein L.P. | 14,580 | $60.2K | 0.00% | +14,580 | New |
| Creative Planning | 13,872 | $64.8K | 0.00% | +53+0.4% | Added |
| Susquehanna International Group, LLP | 14,050 | $65.6K | 0.00% | −842,172−98.4% | Reduced |
| Winton Group Ltd | 14,400 | $67.2K | 0.00% | +3,800+35.8% | Added |
| Caxton Corp | 15,557 | $72.7K | 3.92% | 00.0% | Unchanged |
| Voya Investment Management LLC | 15,838 | $74.0K | 0.00% | +15,838 | New |
| BNP Paribas Arbitrage, SA | 16,384 | $76.5K | 0.00% | +11,628+244.5% | Added |
| New York State Common Retirement Fund | 16,500 | $77.1K | 0.00% | +16,500 | New |
| Intech Investment Management LLC | 17,290 | $80.7K | 0.00% | +17,290 | New |
| Renaissance Technologies LLC | 18,100 | $84.5K | 0.00% | +18,100 | New |
| Stifel Financial Corp | 18,519 | $86.5K | 0.00% | −3,270−15.0% | Reduced |
| Two Sigma Investments, LP | 19,426 | $90.7K | 0.00% | +5,558+40.1% | Added |
| Barclays PLC | 19,439 | $90.8K | 0.00% | +16,625+590.8% | Added |
| Manufacturers Life Insurance Company, The | 22,083 | $103.1K | 0.00% | +22,083 | New |
| Axq Capital, LP | 22,880 | $106.8K | 0.01% | +22,880 | New |
| Police & Firemen's Retirement System of New Jersey | 23,846 | $111.4K | 0.00% | +23,846 | New |
| JPMorgan Chase & Co | 33,552 | $141.9K | 0.00% | +33,519+101,572.7% | Added |
| Vanguard Global Advisers, LLC | 32,977 | $154.0K | 0.00% | 00.0% | Unchanged |
| Jump Financial, LLC | 34,253 | $160.0K | 0.00% | +21,936+178.1% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 37,073 | $173.1K | 0.00% | +37,073 | New |
| Point72 Asset Management, L.P. | 41,072 | $191.8K | 0.00% | +41,072 | New |
| Bank of America Corp | 46,861 | $218.8K | 0.00% | −103,815−68.9% | Reduced |
| MetLife Investment Management | 47,969 | $224.0K | 0.00% | +47,969 | New |
| Wellington Management Group LLP | 51,800 | $241.9K | 0.00% | +51,800 | New |
| UBS Group AG | 58,043 | $271.1K | 0.00% | −209,297−78.3% | Reduced |
| Price T Rowe Associates Inc | 66,379 | $310.0K | 0.00% | +66,379 | New |
| Squarepoint Ops LLC | 67,078 | $313.3K | 0.00% | +67,078 | New |
| Palumbo Wealth Management LLC | 67,116 | $313.4K | 0.07% | −63,898−48.8% | Reduced |
| Wells Fargo & Company | 67,712 | $316.2K | 0.00% | +67,712 | New |
| Citigroup Inc | 70,112 | $327.4K | 0.00% | +34,347+96.0% | Added |
| American Century Companies Inc | 74,795 | $349.3K | 0.00% | +74,795 | New |
| Gsa Capital Partners LLP | 76,314 | $356.0K | 0.02% | +76,314 | New |
| Deutsche Bank AG | 78,885 | $368.4K | 0.00% | +78,885 | New |
| Susquehanna Portfolio Strategies, LLC | 87,282 | $407.6K | 0.01% | −15,317−14.9% | Reduced |
| Rhumbline Advisers | 95,081 | $444.0K | 0.00% | +95,081 | New |
| Alps Advisors Inc | 95,726 | $447.0K | 0.00% | +95,726 | New |
| Invesco Ltd. | 96,772 | $451.9K | 0.00% | +76,804+384.6% | Added |
| Nuveen, LLC | 107,389 | $501.5K | 0.00% | +107,389 | New |
| Affinity Asset Advisors, LLC | 145,000 | $677.1K | 0.03% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 196,340 | $916.9K | 0.00% | +196,340 | New |
| Stonepine Capital Management, LLC | 224,989 | $1.05M | 0.80% | −110,320−32.9% | Reduced |
| Charles Schwab Investment Management Inc | 263,264 | $1.23M | 0.00% | +196,515+294.4% | Added |
| Verdad Advisers, LP | 352,093 | $1.64M | 1.57% | +352,093 | New |
| Vanguard Portfolio Management LLC | 542,128 | $2.53M | 0.00% | +542,128 | New |
| Vanguard Fiduciary Trust Co | 572,038 | $2.67M | 0.00% | +91,305+19.0% | Added |
| Northern Trust Corp | 652,849 | $3.05M | 0.00% | +474,614+266.3% | Added |
| Goldman Sachs Group Inc | 916,536 | $4.28M | 0.00% | +34,402+3.9% | Added |
| Woodline Partners LP | 1,001,095 | $4.68M | 0.01% | 00.0% | Unchanged |
| State Street Corp | 1,296,017 | $6.05M | 0.00% | +892,483+221.2% | Added |
| Samsara BioCapital, LLC | 1,395,587 | $6.52M | 0.54% | −436,979−23.8% | Reduced |
| VR Adviser, LLC | 1,934,253 | $9.03M | 0.27% | +1,603,728+485.2% | Added |
| Geode Capital Management, LLC | 2,098,047 | $9.80M | 0.00% | +1,158,321+123.3% | Added |
| BVF Inc | 2,233,742 | $10.4M | 0.27% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 2,449,468 | $11.4M | 0.69% | 00.0% | Unchanged |
| Trails Edge Capital Partners, LP | 2,571,478 | $12.0M | 1.91% | 00.0% | Unchanged |
| Blackstone Group Inc. | 2,681,922 | $12.5M | 0.04% | 00.0% | Unchanged |
| Braidwell LP | 2,922,754 | $13.6M | 0.50% | −350,200−10.7% | Reduced |
| Rosalind Advisors, Inc. | 3,214,766 | $15.0M | 5.64% | 00.0% | Unchanged |
| NEA Management Company, LLC | 3,233,743 | $15.1M | 0.95% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 3,715,859 | $17.4M | 0.00% | +218,247+6.2% | Added |
| Kalehua Capital Management LLC | 3,722,840 | $17.4M | 9.99% | 00.0% | Unchanged |
| BlackRock, Inc. | 5,554,906 | $25.9M | 0.00% | +4,343,112+358.4% | Added |
| Deep Track Capital, LP | 5,878,757 | $27.5M | 0.40% | −460,778−7.3% | Reduced |
| Empery Asset Management, LP | 6,930,591 | $32.4M | 37.43% | −2,013,527−22.5% | Reduced |
| Saturn V Capital Management LLC | 6,973,343 | $32.6M | 4.67% | +516,697+8.0% | Added |
| Perceptive Advisors LLC | 7,933,491 | $37.0M | 0.58% | +1,195,843+17.7% | Added |
| Bain Capital Life Sciences Investors, LLC | 7,967,454 | $37.2M | 2.21% | 00.0% | Unchanged |
| FMR LLC | 8,321,657 | $38.9M | 0.00% | +218,257+2.7% | Added |
| Morgan Stanley | 9,461,279 | $44.2M | 0.00% | −5,713−0.1% | Reduced |
| Millennium Management LLC | 0 | $0 | 0.00% | −1,210,514−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −850,742−100.0% | 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 |