XFOR — X4 PHARMACEUTICALS INC
Reported value held$152.08M
Funds holding (latest)30
SectorHealth Care
Funds holding (Q2 2026)24
Institutional value$131.18M · 28.16M sh
New / Add / Cut / Exit11 / 9 / 2 / 2
Top-5 / Top-10 concentration93.8% / 98.4%
Institutional holdings change
Accumulating +23.0%
(+5.27M sh)
Institutional value change
Up +38.8%
As of Q2 2026, 24 SEC-registered investment managers reported holding XFOR (X4 PHARMACEUTICALS INC) in their latest 13F filings, with a combined reported value of $131.18M across 28.16M shares. That is +23.0% by share count (+5.27M shares) versus the previous quarter, while reported value moved +38.8%. Ownership is concentrated: the five largest holders account for 93.8% of reported value and the top ten for 98.4%.
Compared with the prior quarter, 11 opened new positions, 9 added to existing stakes, 2 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
XFOR is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 24 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 9.46M | $44.18M | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 8.32M | $38.86M | 0.00% | Add |
| BlackRock Inc history | 5.55M | $25.94M | 0.00% | Add |
| Geode Capital Management history | 2.10M | $9.80M | 0.00% | Add |
| Goldman Sachs Group history | 916.54K | $4.28M | 0.00% | Add |
| Northern Trust Corp history | 652.85K | $3.05M | 0.00% | Add |
| Charles Schwab Investment Management history | 263.26K | $1.23M | 0.00% | Add |
| BNY Mellon history | 196.34K | $916.91K | 0.00% | New |
| Invesco Ltd history | 96.77K | $451.93K | 0.00% | Add |
| Deutsche Bank AG history | 78.89K | $368.39K | 0.00% | New |
| Citigroup Inc history | 70.11K | $327.42K | 0.00% | Add |
| Wells Fargo & Co history | 67.71K | $316.21K | 0.00% | New |
| UBS Group AG history | 58.04K | $271.06K | 0.00% | Reduce |
| Wellington Management Group history | 51.80K | $241.91K | 0.00% | New |
| Bank of America Corp history | 46.86K | $218.84K | 0.00% | Reduce |
| Point72 Asset Management history | 41.07K | $191.81K | 0.00% | New |
| JPMorgan Chase & Co history | 33.55K | $141.93K | 0.00% | New |
| Manulife Financial history | 22.08K | $103.13K | 0.00% | New |
| Two Sigma Investments history | 19.43K | $90.72K | 0.00% | Add |
| Renaissance Technologies history | 18.10K | $84.53K | 0.00% | New |
| Prudential Financial history | 12.50K | $58.38K | 0.00% | New |
| Legal & General Investment Management America history | 7.86K | $36.70K | 0.00% | New |
| PNC Financial Services history | 1.76K | $8.21K | 0.00% | Hold |
| T. Rowe Price Associates history | 66.38K | $310 | 0.00% | New |
Q1 2026 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 9.47M | $39.10M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 8.10M | $33.47M | 0.00% | Reduce |
| BlackRock Inc history | 1.21M | $5.00M | 0.00% | Reduce |
| Millennium Management history | 1.21M | $5.00M | 0.00% | Add |
| Geode Capital Management history | 939.73K | $3.88M | 0.00% | Hold |
| Goldman Sachs Group history | 882.13K | $3.64M | 0.00% | Add |
| Marshall Wace history | 336.83K | $1.39M | 0.00% | Add |
| UBS Group AG history | 267.34K | $1.10M | 0.00% | Add |
| Northern Trust Corp history | 178.24K | $736.11K | 0.00% | Hold |
| Bank of America Corp history | 150.68K | $622.29K | 0.00% | Add |
| Charles Schwab Investment Management history | 66.75K | $275.67K | 0.00% | Hold |
| Citigroup Inc history | 35.77K | $147.71K | 0.00% | Add |
| Invesco Ltd history | 19.97K | $82.47K | 0.00% | New |
| Two Sigma Investments history | 13.87K | $57.27K | 0.00% | Reduce |
| PNC Financial Services history | 1.76K | $7.26K | 0.00% | Hold |
Q4 2025 — 19 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 8.50M | $34.00M | 0.00% | New |
| Morgan Stanley history | 8.21M | $32.83M | 0.00% | Add |
| Vanguard Group history | 3.42M | $13.69M | 0.00% | Add |
| BlackRock Inc history | 1.23M | $4.91M | 0.00% | Add |
| Geode Capital Management history | 940.45K | $3.76M | 0.00% | Add |
| Goldman Sachs Group history | 831.89K | $3.33M | 0.00% | New |
| Point72 Asset Management history | 808.15K | $3.23M | 0.00% | Add |
| Northern Trust Corp history | 178.24K | $712.94K | 0.00% | New |
| Citadel Advisors history | 128.68K | $514.70K | 0.00% | New |
| Marshall Wace history | 80.46K | $321.82K | 0.00% | New |
| Charles Schwab Investment Management history | 66.79K | $267.15K | 0.00% | New |
| Balyasny Asset Management history | 64.50K | $258.02K | 0.00% | New |
| Millennium Management history | 55.98K | $223.91K | 0.00% | Reduce |
| Bank of America Corp history | 35.76K | $143.04K | 0.00% | Add |
| Citigroup Inc history | 32.33K | $129.33K | 0.00% | Add |
| Two Sigma Investments history | 17.25K | $68.98K | 0.00% | Add |
| JPMorgan Chase & Co history | 4.58K | $18.32K | 0.00% | Add |
| UBS Group AG history | 4.13K | $16.52K | 0.00% | Reduce |
| PNC Financial Services history | 1.76K | $7.04K | 0.00% | Hold |
Q3 2025 — 13 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 410.49K | $1.40M | 0.00% | Add |
| UBS Group AG history | 159.84K | $546.63K | 0.00% | Add |
| Geode Capital Management history | 79.66K | $272.47K | 0.00% | Add |
| Millennium Management history | 64.80K | $221.60K | 0.00% | Reduce |
| BlackRock Inc history | 61.93K | $211.81K | 0.00% | Reduce |
| Point72 Asset Management history | 21.67K | $74.10K | 0.00% | Hold |
| Bank of America Corp history | 19.30K | $66.02K | 0.00% | Reduce |
| Renaissance Technologies history | 19.18K | $65.58K | 0.00% | Add |
| Two Sigma Investments history | 13.87K | $47.43K | 0.00% | New |
| Morgan Stanley history | 3.73K | $12.75K | 0.00% | Reduce |
| PNC Financial Services history | 1.76K | $6.02K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 33 | $113 | 0.00% | Hold |
| Citigroup Inc history | 32 | $109 | 0.00% | Reduce |
Q2 2025 — 16 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 231.89K | $440.60K | 0.00% | New |
| BlackRock Inc history | 179.23K | $340.53K | 0.00% | New |
| UBS Group AG history | 109.96K | $208.92K | 0.00% | New |
| Bank of America Corp history | 80.32K | $152.60K | 0.00% | New |
| Millennium Management history | 78.06K | $148.32K | 0.00% | New |
| Geode Capital Management history | 49.15K | $93.40K | 0.00% | New |
| AQR Capital Management history | 26.38K | $50.12K | 0.00% | New |
| Point72 Asset Management history | 21.67K | $41.17K | 0.00% | New |
| Goldman Sachs Group history | 18.86K | $35.84K | 0.00% | New |
| Renaissance Technologies history | 17.37K | $32.99K | 0.00% | New |
| Morgan Stanley history | 10.92K | $20.75K | 0.00% | New |
| PNC Financial Services history | 1.79K | $3.41K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 1.70K | $3.22K | 0.00% | New |
| Citigroup Inc history | 762 | $1.45K | 0.00% | New |
| Wells Fargo & Co history | 348 | $661 | 0.00% | New |
| JPMorgan Chase & Co history | 33 | $63 | 0.00% | New |
Q1 2025 — 1 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| T. Rowe Price Associates history | 83.02K | $20 | 0.00% | New |
New Positions (Q2 2026)
- BNY Mellon 196.34K sh · $916.91K
- Deutsche Bank AG 78.89K sh · $368.39K
- Wells Fargo & Co 67.71K sh · $316.21K
- Wellington Management Group 51.80K sh · $241.91K
- Point72 Asset Management 41.07K sh · $191.81K
- JPMorgan Chase & Co 33.55K sh · $141.93K
- Manulife Financial 22.08K sh · $103.13K
- Renaissance Technologies 18.10K sh · $84.53K
- Prudential Financial 12.50K sh · $58.38K
- Legal & General Investment Management America 7.86K sh · $36.70K
- T. Rowe Price Associates 66.38K sh · $310
Fully Exited (vs previous quarter)
- Millennium Management sold 1.21M sh · $5.00M
- Marshall Wace sold 336.83K sh · $1.39M
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 |
|---|---|---|---|---|---|---|
| Morgan Stanley | 9.46M | 9.47M | 8.21M | 3.73K | 10.92K | — |
| Fidelity Management & Research (FMR) | 8.32M | 8.10M | 8.50M | — | 1.70K | — |
| BlackRock Inc | 5.55M | 1.21M | 1.23M | 61.93K | 179.23K | — |
| Geode Capital Management | 2.10M | 939.73K | 940.45K | 79.66K | 49.15K | — |
| Goldman Sachs Group | 916.54K | 882.13K | 831.89K | — | 18.86K | — |
| Northern Trust Corp | 652.85K | 178.24K | 178.24K | — | — | — |
| Charles Schwab Investment Management | 263.26K | 66.75K | 66.79K | — | — | — |
| BNY Mellon | 196.34K | — | — | — | — | — |
| Invesco Ltd | 96.77K | 19.97K | — | — | — | — |
| Deutsche Bank AG | 78.89K | — | — | — | — | — |
| Citigroup Inc | 70.11K | 35.77K | 32.33K | 32 | 762 | — |
| Wells Fargo & Co | 67.71K | — | — | — | 348 | — |
| UBS Group AG | 58.04K | 267.34K | 4.13K | 159.84K | 109.96K | — |
| Wellington Management Group | 51.80K | — | — | — | — | — |
| Bank of America Corp | 46.86K | 150.68K | 35.76K | 19.30K | 80.32K | — |
| Point72 Asset Management | 41.07K | — | 808.15K | 21.67K | 21.67K | — |
| JPMorgan Chase & Co | 33.55K | — | 4.58K | 33 | 33 | — |
| Manulife Financial | 22.08K | — | — | — | — | — |
| Two Sigma Investments | 19.43K | 13.87K | 17.25K | 13.87K | — | — |
| Renaissance Technologies | 18.10K | — | — | 19.18K | 17.37K | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details