XbiotechXBIT
13F holders, Q2 2026 (June 30)At the end of Q2 2026, 36 institutions reported holding Xbiotech Inc. (XBIT) in their 13F filings, down 1 from Q1 2026. 3 opened new positions and 3 sold out. The largest holders were BlackRock, Inc. ($739K), Geode Capital Management, LLC ($493K) and Vanguard Capital Management LLC ($460K). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies'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 Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $138K |
| Exits | 3 | $2K |
All 13F filers, Q1 2026 → Q2 2026: 122,892 shares bought and 147,079 shares sold, net −24,187 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 36 holders
| BlackRock, Inc. | 0.00% | Add +9.6% | 321,146 | $739K |
| Geode Capital Management, LLC | 0.00% | Reduce -7.3% | 214,116 | $493K |
| Vanguard Capital Management LLC | 0.00% | Reduce -0.4% | 200,182 | $460K |
| RBF Capital, LLC | 0.02% | No change | 198,501 | $457K |
| Morgan Stanley | 0.00% | Reduce -10.7% | 147,880 | $340K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 98,447 | $226K |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +0.9% | 92,365 | $212K |
| Millennium Management | 0.00% | Reduce -24.8% | 79,330 | $182K |
| State Street Corp. | 0.00% | No change | 73,006 | $168K |
| Northern Trust Corp. | 0.00% | Reduce -12.9% | 66,258 | $152K |
| Empowered Funds, LLC | 0.00% | No change | 59,547 | $137K |
| Renaissance Technologies | 0.00% | Add +85.7% | 41,663 | $96K |
| Bank of New York Mellon Corp | 0.00% | No change | 39,355 | $91K |
| Dimensional Fund Advisors LP | 0.00% | No change | 36,053 | $83K |
| Squarepoint Ops LLC | 0.00% | Reduce -15.7% | 34,757 | $80K |
| Qube Research & Technologies Ltd | 0.00% | Add +79.6% | 33,570 | $77K |
| Gsa Capital Partners LLP | 0.00% | New | 30,654 | $71K |
| Citadel Advisors | 0.00% | New | 29,192 | $67K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -2.5% | 27,943 | $64K |
| BNP Paribas Financial Markets | 0.00% | Reduce -2.6% | 26,464 | $61K |
| National Bank of Canada | 0.00% | No change | 25,000 | $58K |
| Bank of America Corp. | 0.00% | Reduce -35.2% | 23,789 | $55K |
| American Century Companies Inc. | 0.00% | Reduce -2.6% | 18,381 | $42K |
| Thomasville National Bank | 0.00% | — | 13,350 | $31K |
| XTX Topco Ltd | 0.00% | Reduce -26.9% | 13,080 | $30K |
| Pinnacle Financial Partners, Inc. | 0.00% | No change | 11,796 | $27K |
| Jane Street Group, LLC | 0.00% | Reduce -80.9% | 11,476 | $26K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 7,009 | $16K |
| UBS Group AG | 0.00% | No change | 5,035 | $12K |
| Royal Bank of Canada | 0.00% | Add +1.4% | 1,206 | $3K |
| Jones Financial Companies LLLP | 0.00% | No change | 370 | $862 |
| JPMorgan Chase & Co. | 0.00% | No change | 96 | $224 |
| Barclays PLC | 0.00% | New | 94 | $216 |
| SBI Securities Co., Ltd. | 0.00% | No change | 37 | $85 |
| Larson Financial Group LLC | 0.00% | No change | 21 | $48 |
| Caitong International Asset Management Co., Ltd | 0.00% | No change | 11 | $25 |
"% of holder's portfolio" is XBIT's weight in each manager's 13F, not the share of Xbiotech Inc. the manager owns.