XBIT Xbiotech Inc.
Xbiotech Inc. (XBIT) Institutional Ownership
What the institutions did with XBIT last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 321.1K | 16.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 214.1K | 10.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 200.2K | 10.1% |
| RBF Capital, LLC | 198.5K | 10.0% |
| MORGAN STANLEY | 147.9K | 7.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 98.4K | 5.0% |
| VANGUARD FIDUCIARY TRUST CO | 92.4K | 4.7% |
| MILLENNIUM MANAGEMENT LLC | 79.3K | 4.0% |
| STATE STREET CORP | 73.0K | 3.7% |
| NORTHERN TRUST CORP | 66.3K | 3.3% |
| Empowered Funds, LLC | 59.5K | 3.0% |
| RENAISSANCE TECHNOLOGIES LLC | 41.7K | 2.1% |
| Bank of New York Mellon Corp | 39.4K | 2.0% |
| DIMENSIONAL FUND ADVISORS LP | 36.1K | 1.8% |
| Squarepoint Ops LLC | 34.8K | 1.8% |
| Qube Research & Technologies Ltd | 33.6K | 1.7% |
| GSA CAPITAL PARTNERS LLP | 30.7K | 1.5% |
| CITADEL ADVISORS LLC | 29.2K | 1.5% |
| Connor, Clark & Lunn Investment Management Ltd. | 27.9K | 1.4% |
| BNP PARIBAS FINANCIAL MARKETS | 26.5K | 1.3% |
| NATIONAL BANK OF CANADA /FI/ | 25.0K | 1.3% |
| BANK OF AMERICA CORP /DE/ | 23.8K | 1.2% |
| AMERICAN CENTURY COMPANIES INC | 18.4K | 0.9% |
| Thomasville National Bank | 13.4K | 0.7% |
| XTX Topco Ltd | 13.1K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| JANE STREET GROUP, LLC | Reduced | 60.1K | 11.5K | -48.6K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 30.7K | +30.7K |
| CITADEL ADVISORS LLC | New | 0 | 29.2K | +29.2K |
| BlackRock, Inc. | Increased | 293.1K | 321.1K | +28.0K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 105.5K | 79.3K | -26.2K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 22.4K | 41.7K | +19.2K |
| MORGAN STANLEY | Reduced | 165.6K | 147.9K | -17.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 231.0K | 214.1K | -16.9K |
| Qube Research & Technologies Ltd | Increased | 18.7K | 33.6K | +14.9K |
| BANK OF AMERICA CORP /DE/ | Reduced | 36.7K | 23.8K | -12.9K |
| NORTHERN TRUST CORP | Reduced | 76.1K | 66.3K | -9.8K |
| Squarepoint Ops LLC | Reduced | 41.2K | 34.8K | -6.5K |
| XTX Topco Ltd | Reduced | 17.9K | 13.1K | -4.8K |
| RHUMBLINE ADVISERS | Sold Out | 928 | 0 | -928 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 201.0K | 200.2K | -789 |
| VANGUARD FIDUCIARY TRUST CO | Increased | 91.6K | 92.4K | +789 |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 28.7K | 27.9K | -720 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 27.2K | 26.5K | -700 |
| AMERICAN CENTURY COMPANIES INC | Reduced | 18.9K | 18.4K | -500 |
| BARCLAYS PLC | New | 0 | 94 | +94 |
| ROYAL BANK OF CANADA | Increased | 1.2K | 1.2K | +17 |
| Arax Advisory Partners | Sold Out | 15 | 0 | -15 |
| Optiver Holding B.V. | Sold Out | 8 | 0 | -8 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.