X4 PHARMACEUTICALS INC XFOR
$4.13
+1.1% 52w: $1.42 – $4.67
Latest 13F among current holders filed 32 days ago (Jun 3, 2026)
Price — last 12 months
research preview data1.423.044.67
Jun 20, 2025 Jul 2, 2026
Institutional holders
84
+5 QoQ
13F value
$407.0M
+13.8% QoQ
Smart-money holders
19
signal tier ≥ 2
New smart buyers
1
Q1 2026
Options barometer
calls only
$1.2M calls / — puts
Institutional value by quarter
Number of holders
Who owns XFOR?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| MORGAN STANLEY | Bank broker | 9.5M | $39.1M | 0.0% | +15.3% |
| Empery Asset Management, LP ★2 | Fundamental concentrated | 8.9M | $36.9M | 44.5% | -0.1% |
| FMR LLC | Long only active | 8.1M | $33.5M | 0.0% | -4.7% |
| Bain Capital Life Sciences Investors, LLC ★3 | Fundamental concentrated | 8.0M | $32.9M | 3.0% | Held |
| Kalehua Capital Management LLC ★2 | Fundamental concentrated | 7.4M | $30.8M | 11.8% | +100.0% |
| PERCEPTIVE ADVISORS LLC ★2 | Fundamental diversified | 6.7M | $27.8M | 0.6% | +6.7% |
| Saturn V Capital Management LP ★3 | Fundamental concentrated | 6.5M | $26.7M | 4.8% | +11.3% |
| Deep Track Capital, LP ★2 | Fundamental diversified | 6.3M | $26.2M | 0.5% | +26.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 3.5M | $14.4M | 0.0% | — |
| BRAIDWELL LP ★2 | Fundamental diversified | 3.3M | $13.5M | 0.5% | -2.8% |
| NEA Management Company, LLC ★3 | Fundamental concentrated | 3.2M | $13.4M | 0.8% | Held |
| Rosalind Advisors, Inc. ★2 | Fundamental concentrated | 3.2M | $13.3M | 5.4% | +23.4% |
| Blackstone Inc. | Other | 2.7M | $11.1M | 0.0% | Held |
| Trails Edge Capital Partners, LP ★2 | Fundamental concentrated | 2.6M | $10.6M | 2.5% | Held |
| Nantahala Capital Management, LLC ★2 | Fundamental diversified | 2.4M | $10.1M | 0.6% | Held |
| BVF INC/IL ★3 | Fundamental concentrated | 2.2M | $9.2M | 0.3% | Held |
| SAMSARA BIOCAPITAL, LLC ★3 | Fundamental concentrated | 1.8M | $7.6M | 0.7% | -6.5% |
| STEMPOINT CAPITAL LP ★2 | Fundamental concentrated | 1.7M | $7.0M | 0.7% | +89.4% |
| BlackRock, Inc. | Index provider | 1.2M | $5.0M | 0.0% | -1.2% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 1.2M | $5.0M | 0.0% | +2062.5% |
| Woodline Partners LP | Other | 1.0M | $4.1M | 0.0% | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 939.7K | $3.9M | 0.0% | -0.1% |
| GOLDMAN SACHS GROUP INC | Bank broker | 882.1K | $3.6M | 0.0% | +6.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Market maker | 856.2K | $3.5M | 0.0% | +3768.2% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 480.7K | $2.0M | 0.0% | — |
| STATE STREET CORP | Index provider | 403.5K | $1.7M | 0.0% | +103.6% |
| MARSHALL WACE, LLP | Quant stat arb | 336.8K | $1.4M | 0.0% | +318.7% |
| Stonepine Capital Management, LLC ★2 | Fundamental concentrated | 335.3K | $1.4M | 1.2% | -43.5% |
| Venrock Adviser, LLC ★3 | Fundamental concentrated | 330.5K | $1.4M | 0.1% | New |
| UBS Group AG | Bank broker | 267.3K | $1.1M | 0.0% | +6374.7% |
| ACORN CAPITAL ADVISORS, LLC ★3 | Fundamental concentrated | 234.0K | $967K | 0.3% | -14.4% |
| Qube Research & Technologies Ltd | Quant stat arb | 219.0K | $904K | 0.0% | +223.2% |
| NORTHERN TRUST CORP | Index provider | 178.2K | $736K | 0.0% | Held |
| Pale Fire Capital SE ★2 | Fundamental concentrated | 167.6K | $692K | 0.1% | Held |
| BANK OF AMERICA CORP /DE/ | Bank broker | 150.7K | $622K | 0.0% | +321.3% |
| Affinity Asset Advisors, LLC ★2 | Fundamental diversified | 145.0K | $599K | 0.0% | Held |
| Palumbo Wealth Management LLC | Other | 131.0K | $541K | 0.1% | +15.6% |
| Brevan Howard Capital Management LP | Diversified mechanical | 127.3K | $526K | 0.0% | New |
| Susquehanna Portfolio Strategies, LLC | Market maker | 102.6K | $424K | 0.0% | +137.2% |
| Dynamic Technology Lab Private Ltd | Quant stat arb | 36.2K | $385K | 0.1% | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 66.7K | $276K | 0.0% | -0.1% |
| OMERS ADMINISTRATION Corp | Other | 57.3K | $237K | 0.0% | -47.5% |
| Hudson Bay Capital Management LP | Multistrat pod | 50.3K | $208K | 0.0% | +56.0% |
| Catalyst Funds Management Pty Ltd | Quant stat arb | 47.4K | $196K | 0.0% | New |
| JANE STREET GROUP, LLC | Market maker | 37.1K | $153K | 0.0% | -59.4% |
| CITIGROUP INC | Bank broker | 35.8K | $148K | 0.0% | +10.6% |
| Vanguard Global Advisers, LLC | Diversified mechanical | 33.0K | $136K | 0.0% | — |
| Diametric Capital, LP | Quant stat arb | 29.0K | $120K | 0.0% | New |
| STIFEL FINANCIAL CORP | Diversified mechanical | 21.8K | $90K | 0.0% | +6.3% |
| Invesco Ltd. | Index provider | 20.0K | $82K | 0.0% | New |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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