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, Q4 2021
Institutional positions in X4 Pharmaceuticals, Inc as of Dec 31, 2021. 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
- 52
- +2 vs. Q3 2021
- Shares held
- 17.6M
- +1.70M (+10.7%) vs. Q3 2021
- Total value
- $40.2M
- −$43.7M (−52.1%) vs. Q3 2021
- New holders
- 13
- 12 more added
- Sold out
- 11
- 14 more reduced
2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: 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, Q4 2021
Shares, value and share of portfolio for each institution holding X4 Pharmaceuticals, Inc; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bain Capital Life Sciences Investors, LLC | 2,886,542 | $6.61M | 0.52% | +767,002+36.2% | Added |
| Ikarian Capital, LLC | 2,264,491 | $5.19M | 1.48% | −275,426−10.8% | Reduced |
| Point72 Asset Management, L.P. | 1,633,204 | $3.74M | 0.02% | +1,633,204 | New |
| Tri Locum Partners LP | 1,578,947 | $3.62M | 1.45% | +1,578,947 | New |
| AIGH Capital Management LLC | 1,464,099 | $3.35M | 1.05% | −200,441−12.0% | Reduced |
| OrbiMed Advisors LLC | 1,373,849 | $3.15M | 0.04% | 00.0% | Unchanged |
| AXA S.A. | 1,151,819 | $2.64M | 0.01% | +561,550+95.1% | Added |
| Vanguard Group Inc | 933,240 | $2.14M | 0.00% | −1,112−0.1% | Reduced |
| BVF Inc | 847,879 | $1.94M | 0.07% | 00.0% | Unchanged |
| Worth Venture Partners, LLC | 340,495 | $780.0K | 0.39% | −45,980−11.9% | Reduced |
| New Leaf Venture Partners, L.L.C. | 335,000 | $767.0K | 0.28% | 00.0% | Unchanged |
| SV Health Investors, LLC | 311,490 | $713.0K | 0.46% | 00.0% | Unchanged |
| Sio Capital Management, LLC | 276,909 | $634.0K | 0.19% | −527,688−65.6% | Reduced |
| BlackRock Inc. | 274,548 | $628.0K | 0.00% | +6,098+2.3% | Added |
| Boothbay Fund Management, LLC | 238,566 | $546.0K | 0.02% | −29,016−10.8% | Reduced |
| Millennium Management LLC | 202,483 | $464.0K | 0.00% | −64,885−24.3% | Reduced |
| Geode Capital Management, LLC | 178,060 | $407.0K | 0.00% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 176,530 | $404.0K | 0.00% | +147,937+517.4% | Added |
| Renaissance Technologies LLC | 137,294 | $314.0K | 0.00% | +16,900+14.0% | Added |
| Kennedy Capital Management, Inc. | 131,501 | $301.0K | 0.01% | +131,501 | New |
| Cormorant Asset Management, LP | 103,980 | $238.0K | 0.01% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 78,271 | $179.0K | 0.00% | −59,760−43.3% | Reduced |
| Citadel Advisors LLC | 77,700 | $178.0K | 0.00% | +43,768+129.0% | Added |
| Northern Trust Corp | 67,504 | $155.0K | 0.00% | −355−0.5% | Reduced |
| Dimensional Fund Advisors LP | 66,170 | $152.0K | 0.00% | −7,325−10.0% | Reduced |
| Marshall Wace, LLP | 60,479 | $139.0K | 0.00% | +35,256+139.8% | Added |
| Acadian Asset Management LLC | 57,270 | $130.0K | 0.00% | +57,270 | New |
| FMR LLC | 53,031 | $121.0K | 0.00% | −99,800−65.3% | Reduced |
| State Street Corp | 48,480 | $111.0K | 0.00% | 00.0% | Unchanged |
| Bleichroeder LP | 35,730 | $82.0K | 0.01% | 00.0% | Unchanged |
| Norges Bank | 27,700 | $63.0K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 20,949 | $48.0K | 0.00% | +10,474+100.0% | Added |
| XTX Topco Ltd | 19,938 | $46.0K | 0.03% | +19,938 | New |
| Group One Trading, L.P. | 13,750 | $31.0K | 0.00% | +11,667+560.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 12,786 | $29.0K | 0.00% | +12,786 | New |
| Morgan Stanley | 12,058 | $27.0K | 0.00% | +3,258+37.0% | Added |
| Engineers Gate Manager LP | 11,874 | $27.0K | 0.00% | +11,874 | New |
| The PNC Financial Services Group, Inc. | 10,350 | $24.0K | 0.00% | 00.0% | Unchanged |
| Moody Lynn & Lieberson, LLC | 10,000 | $23.0K | 0.00% | +10,000 | New |
| Mayflower Financial Advisors, LLC | 10,000 | $23.0K | 0.00% | +10,000 | New |
| Bank of America Corp | 9,406 | $22.0K | 0.00% | −7,776−45.3% | Reduced |
| Barclays PLC | 7,804 | $18.0K | 0.00% | −2,095−21.2% | Reduced |
| American Portfolios Advisors | 6,250 | $14.3K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 5,309 | $12.0K | 0.00% | +5,256+9,917.0% | Added |
| Clearstead Advisors, LLC | 2,100 | $5.00K | 0.00% | +2,000+2,000.0% | Added |
| High Net Worth Advisory Group LLC | 1,100 | $3.00K | 0.00% | +1,100 | New |
| UBS Group AG | 668 | $2.00K | 0.00% | +668 | New |
| Rockefeller Capital Management L.P. | 1,000 | $2.00K | 0.00% | +1,000 | New |
| Advisor Group Holdings, Inc. | 400 | $1.00K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 278 | $637 | 0.00% | −17−5.8% | Reduced |
| Wells Fargo & Company | 125 | $0 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 203 | $0 | 0.00% | +203 | New |
| Altium Capital Management LP | 0 | $0 | 0.00% | −804,598−100.0% | Sold out |
| Monashee Investment Management LLC | 0 | $0 | 0.00% | −561,421−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −505,752−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −68,938−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −45,893−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −34,719−100.0% | Sold out |
| Minot Wealth Management LLC | 0 | $0 | 0.00% | −17,000−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −16,625−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,250−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Harbour Investments, Inc. | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Polaris Venture Management Co. V, L.L.C. | – | – | – | – | Not filed |
| Marshall Wace North America L.P. | – | – | – | – | Not filed |