XbiotechXBIT
13F holders, Q3 2025 (September 30)48holders −5
4new positions
9sold out
2famous investors
$2.66avg. 13F price*
At the end of Q3 2025, 48 institutions reported holding Xbiotech Inc. (XBIT) in their 13F filings, down 5 from Q2 2025. 4 opened new positions and 9 sold out. The largest holders were Vanguard Group Inc. ($2.2M), Millennium Management ($1.1M) and BlackRock, Inc. ($804K). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Xbiotech Inc.
- CUSIP
- 98400H102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $69K |
| Exits | 9 | $394K |
All 13F filers, Q2 2025 → Q3 2025: 157,810 shares bought and 638,202 shares sold, net −480,392 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 48 holders
| Vanguard Group Inc. | 0.00% | Reduce -13.3% | 819,239 | $2.2M |
| Millennium Management | 0.00% | Reduce -24.5% | 416,344 | $1.1M |
| BlackRock, Inc. | 0.00% | Reduce -19.1% | 302,386 | $804K |
| Geode Capital Management, LLC | 0.00% | Add +0.5% | 221,863 | $590K |
| RBF Capital, LLC | 0.02% | No change | 200,000 | $532K |
| Morgan Stanley | 0.00% | Add +41.5% | 121,453 | $323K |
| Northern Trust Corp. | 0.00% | Reduce -12.4% | 81,624 | $217K |
| State Street Corp. | 0.00% | Reduce -1.8% | 67,306 | $179K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -9.4% | 64,316 | $171K |
| Squarepoint Ops LLC | 0.00% | Add +56.3% | 62,159 | $165K |
| Bridgeway Capital Management, LLC | 0.00% | Add +0.4% | 59,547 | $158K |
| Empowered Funds, LLC | 0.00% | Add +0.4% | 59,547 | $158K |
| Jane Street Group, LLC | 0.00% | Add +120.2% | 55,767 | $148K |
| Bank of New York Mellon Corp | 0.00% | No change | 48,451 | $129K |
| Bank of America Corp. | 0.00% | Add +160.3% | 47,389 | $126K |
| Citadel Advisors | 0.00% | Add +31.8% | 42,816 | $114K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -25.4% | 36,029 | $96K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -5.9% | 30,317 | $81K |
| HRT Financial LP | 0.00% | New | 26,156 | $69K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -77.7% | 25,002 | $67K |
| National Bank of Canada | 0.00% | No change | 25,000 | $66K |
| BNP Paribas Financial Markets | 0.00% | Reduce -0.6% | 20,610 | $55K |
| American Century Companies Inc. | 0.00% | Reduce -27.0% | 18,881 | $50K |
| Two Sigma Advisers, LP | 0.00% | No change | 16,300 | $43K |
| XTX Topco Ltd | 0.00% | Reduce -26.2% | 15,056 | $40K |
| Thomasville National Bank | 0.00% | No change | 13,350 | $36K |
| Synovus Financial Corp. | 0.00% | No change | 11,796 | $31K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | Reduce -50.3% | 6,817 | $18K |
| UBS Group AG | 0.00% | Add +28.4% | 6,483 | $17K |
| Cubist Systematic Strategies, LLC | 0.00% | Reduce -79.5% | 5,320 | $14K |
| Royal Bank of Canada | 0.00% | Add +15.4% | 2,755 | $8K |
| JPMorgan Chase & Co. | 0.00% | Reduce -73.2% | 2,382 | $6K |
| Rhumbline Advisers | 0.00% | No change | 928 | $2K |
| McIlrath & Eck, LLC | 0.00% | No change | 753 | $2K |
| Jones Financial Companies LLLP | 0.00% | No change | 370 | $999 |
| FMR LLC | 0.00% | Reduce -84.1% | 310 | $825 |
| Barclays PLC | 0.00% | Add +20600.0% | 207 | $551 |
| Arax Advisory Partners | 0.00% | New | 22 | $58 |
| Larson Financial Group LLC | 0.00% | No change | 21 | $56 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -45.2% | 17 | $45 |
| Essential Partners LLC | 0.00% | Reduce -51.5% | 16 | $43 |
| Citigroup Inc. | 0.00% | Reduce -99.6% | 12 | $32 |
| Optiver Holding B.V. | 0.00% | New | 8 | $21 |
| True Wealth Design, LLC | 0.00% | Reduce -57.1% | 3 | $8 |
| Sunbelt Securities, Inc. | 0.00% | New | 2 | $5 |
| SBI Securities Co., Ltd. | 0.00% | No change | 1 | $3 |
| Simplex Trading, LLC | 0.00% | Reduce -62.7% | 322 | $0 |
| Cwm, LLC | 0.00% | Reduce -78.9% | 127 | $0 |
"% of holder's portfolio" is XBIT's weight in each manager's 13F, not the share of Xbiotech Inc. the manager owns.