XBIOTECH INC (XBIT)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
Institutions report 2,083,378 shares against 30,487,731 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $738.6K | 321,146 | 0.00% | 8q | +9.6%+$64.5K |
| GEODE CAPITAL MANAGEMENT, LLC | $492.8K | 214,116 | 0.00% | 31q | -7.3%-$38.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | $460.4K | 200,182 | 0.00% | 2q | HELD |
| RBF Capital, LLC | $456.6K | 198,501 | 0.02% | 5q | HELD |
| MORGAN STANLEY | $340.1K | 147,880 | 0.00% | 28q | -10.7%-$40.7K |
| STATE STREET CORP | $335.8K | 146,012 | 0.00% | 31q | +100.0%+$167.9K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $226.4K | 98,447 | 0.00% | 17q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $212.4K | 92,365 | 0.00% | 2q | +0.9%+$1.8K |
| JANE STREET GROUP, LLC | $198.2K | 11,476 | 0.00% | 5q | -80.9%-$839.8K |
| MILLENNIUM MANAGEMENT LLC | $182.5K | 79,330 | 0.00% | 20q | -24.8%-$60.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $170.0K | options only | 0.00% | 2q | OPTIONS |
| NORTHERN TRUST CORP | $152.4K | 66,258 | 0.00% | 31q | -12.9%-$22.6K |
| Empowered Funds, LLC | $137.0K | 59,547 | 0.00% | 13q | HELD |
| CITADEL ADVISORS LLC | $134.3K | 58,384 | 0.00% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $95.8K | 41,663 | 0.00% | 2q | +85.7%+$44.2K |
| Bank of New York Mellon Corp | $90.5K | 39,355 | 0.00% | 31q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $83.0K | 36,053 | 0.00% | 31q | HELD |
| Squarepoint Ops LLC | $79.9K | 34,757 | 0.00% | 5q | -15.7%-$14.9K |
| Qube Research & Technologies Ltd | $77.2K | 33,570 | 0.00% | 5q | +79.6%+$34.2K |
| GSA CAPITAL PARTNERS LLP | $71.0K | 30,654 | 0.00% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $64.3K | 27,943 | 0.00% | 18q | -2.5%-$1.7K |
| BNP PARIBAS FINANCIAL MARKETS | $60.9K | 26,464 | 0.00% | 31q | -2.6%-$1.6K |
| NATIONAL BANK OF CANADA /FI/ | $57.5K | 25,000 | 0.00% | 11q | HELD |
| BANK OF AMERICA CORP /DE/ | $54.7K | 23,789 | 0.00% | 31q | -35.2%-$29.7K |
| AMERICAN CENTURY COMPANIES INC | $42.3K | 18,381 | 0.00% | 9q | -2.6%-$1.1K |
| Thomasville National Bank | $30.7K | 13,350 | 0.00% | 20q | HELD |
| XTX Topco Ltd | $30.1K | 13,080 | 0.00% | 5q | -26.9%-$11.1K |
| Pinnacle Financial Partners, Inc. | $27.1K | 11,796 | 0.00% | 3q | HELD |
| Vanguard Global Advisers, LLC | $16.1K | 7,009 | 0.00% | 2q | HELD |
| UBS Group AG | $11.6K | 5,035 | 0.00% | 28q | HELD |
| SIMPLEX TRADING, LLC | $9.9K | options only | 0.00% | 5q | OPTIONS |
| GROUP ONE TRADING LLC | $6.4K | options only | 0.00% | 2q | OPTIONS |
| ROYAL BANK OF CANADA | $3.0K | 1,206 | 0.00% | 2q | +16.0% |
| JONES FINANCIAL COMPANIES LLLP | $862 | 370 | 0.00% | 7q | HELD |
| JPMORGAN CHASE & CO | $224 | 96 | 0.00% | 13q | HELD |
| BARCLAYS PLC | $216 | 94 | 0.00% | new | NEW |
| SBI Securities Co., Ltd. | $85 | 37 | 0.00% | 7q | HELD |
| Larson Financial Group LLC | $48 | 21 | 0.00% | 5q | HELD |
| Caitong International Asset Management Co., Ltd | $25 | 11 | 0.00% | 2q | HELD |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 39 | $5.2M | 2,083,378 | 3 | 6 | 11 | 7.0% |
| Q1 2026 | 40 | $4.9M | 1,992,634 | 8 | 7 | 11 | 3.6% |
| Q4 2025 | 40 | $6.0M | 2,493,582 | 5 | 9 | 13 | 0.8% |
| Q3 2025 | 47 | $7.8M | 2,937,513 | 4 | 8 | 21 | 0.0% |
| Q2 2025 | 53 | $10.2M | 3,418,359 | 16 | 12 | 19 | 0.0% |
| Q1 2025 | 54 | $14.5M | 4,477,932 | 8 | 8 | 21 | 0.0% |
| Q4 2024 | 53 | $18.7M | 4,716,023 | 10 | 17 | 11 | 0.5% |
| Q3 2024 | 50 | $37.6M | 4,860,163 | 10 | 22 | 6 | 0.0% |
| Q2 2024 | 46 | $23.3M | 4,524,388 | 12 | 17 | 9 | 0.3% |
| Q1 2024 | 45 | $35.0M | 4,291,348 | 10 | 16 | 9 | 0.2% |
| Q4 2023 | 39 | $14.2M | 3,557,419 | 5 | 15 | 7 | 0.0% |
| Q3 2023 | 37 | $14.0M | 3,395,054 | 3 | 9 | 9 | 0.2% |
| Q2 2023 | 39 | $20.7M | 3,483,471 | 8 | 11 | 10 | 0.3% |
| Q1 2023 | 37 | $8.7M | 2,516,054 | 2 | 8 | 13 | 0.4% |
| Q4 2022 | 40 | $9.7M | 2,757,472 | 2 | 5 | 17 | 0.1% |
| Q3 2022 | 44 | $11.1M | 3,059,628 | 6 | 9 | 16 | 0.0% |
| Q2 2022 | 51 | $18.9M | 3,361,281 | 13 | 16 | 18 | 0.2% |
| Q1 2022 | 60 | $34.9M | 4,033,958 | 9 | 12 | 20 | 0.0% |
| Q4 2021 | 61 | $48.3M | 4,237,745 | 5 | 22 | 14 | 2.3% |
| Q3 2021 | 65 | $56.9M | 4,356,993 | 10 | 28 | 9 | 0.8% |
| Q2 2021 | 58 | $68.0M | 4,035,892 | 2 | 18 | 24 | 1.8% |
| Q1 2021 | 66 | $75.7M | 4,325,783 | 9 | 21 | 19 | 2.0% |
| Q4 2020 | 69 | $64.8M | 3,997,357 | 7 | 18 | 24 | 3.4% |
| Q3 2020 | 68 | $79.7M | 3,943,133 | 9 | 18 | 28 | 5.6% |
| Q2 2020 | 65 | $62.2M | 4,296,731 | 18 | 23 | 17 | 5.2% |
| Q1 2020 | 60 | $49.3M | 4,388,691 | 10 | 16 | 34 | 5.5% |
| Q4 2019 | 60 | $109.7M | 5,812,554 | 21 | 25 | 11 | 1.1% |
| Q3 2019 | 48 | $53.0M | 4,961,218 | 12 | 28 | 4 | 2.0% |
| Q2 2019 | 42 | $36.5M | 4,539,553 | 17 | 12 | 10 | 5.6% |
| Q1 2019 | 37 | $30.5M | 2,608,071 | 18 | 7 | 8 | 5.8% |
| Q4 2018 | 24 | $6.8M | 1,253,863 | 0 | 0 | 0 | 5.7% |