XBiotech Inc (XBIT)
Healthcare
Biotechnology
2.20 $
+0.2%
vs. previous close
Closing price · As of: 4. Aug 2026
Who owns XBiotech Inc (XBIT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 74.9% of the shares are freely tradable; institutional investors hold 6.8%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
6.8%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
24.3%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
74.9%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
1.1%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
31Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 0.96 | 293,104 | +1.5 | 03/31/2026 |
| Geode Capital Management, LLC | 0.76 | 231,020 | +4.5 | 03/31/2026 |
| Vanguard Capital Management, LLC | 0.66 | 200,971 | +0.0 | 03/31/2026 |
| RBF LLC | 0.65 | 198,501 | -50.0 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 0.54 | 165,554 | +1.3 | 03/31/2026 |
| Millennium Management LLC | 0.35 | 105,540 | -22.1 | 03/31/2026 |
| Bridgeway Capital Management, LLC | 0.32 | 98,447 | +9.9 | 03/31/2026 |
| Vanguard Fiduciary Trust Co | 0.30 | 91,576 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Institutional Extnd Mkt Idx Tr | 0.66 | 200,182 | +0.0 | 06/30/2026 |
| Fidelity Extended Market Index | 0.31 | 94,914 | -14.1 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: August 4, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.