XBiotech Inc.
XBIT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001626878
No open-market purchases or sales by XBiotech Inc. insiders were filed in the last 90 days; 36 institutions reported holding it in 13F filings for Q2 2026, worth $4.56M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in XBiotech Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 41
- −4 vs. Q3 2025
- Shares held
- 2.30M
- −616.4K (−21.2%) vs. Q3 2025
- Total value
- $5.48M
- −$2.26M (−29.2%) vs. Q3 2025
- New holders
- 4
- 8 more added
- Sold out
- 8
- 17 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting XBIT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 36 | $4.56M |
| Q1 2026 | 37 | $4.68M |
| Q4 2025 | 41 | $5.48M |
| Q3 2025 | 48 | $7.81M |
| Q2 2025 | 53 | $10.1M |
| Q1 2025 | 55 | $14.5M |
| Q4 2024 | 53 | $18.6M |
| Q3 2024 | 50 | $37.5M |
| Q2 2024 | 46 | $23.2M |
| Q1 2024 | 46 | $32.5M |
| Q4 2023 | 39 | $13.8M |
| Q3 2023 | 38 | $14.0M |
| Q2 2023 | 39 | $20.7M |
| Q1 2023 | 39 | $8.61M |
| Q4 2022 | 41 | $9.68M |
| Q3 2022 | 45 | $11.1M |
| Q2 2022 | 56 | $18.9M |
| Q1 2022 | 64 | $34.9M |
| Q4 2021 | 61 | $46.8M |
| Q3 2021 | 66 | $56.7M |
| Q2 2021 | 56 | $66.8M |
| Q1 2021 | 65 | $74.1M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding XBiotech Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 299,556 | $715.9K | 0.00% | −519,683−63.4% | Reduced |
| BlackRock, Inc. | 288,632 | $689.8K | 0.00% | −13,754−4.5% | Reduced |
| Geode Capital Management, LLC | 221,121 | $528.7K | 0.00% | −742−0.3% | Reduced |
| RBF Capital, LLC | 198,501 | $474.4K | 0.02% | −1,499−0.7% | Reduced |
| Ameriprise Financial Inc | 186,796 | $446.4K | 0.00% | +186,796 | New |
| Morgan Stanley | 163,419 | $390.6K | 0.00% | +41,966+34.6% | Added |
| Millennium Management LLC | 135,438 | $323.7K | 0.00% | −280,906−67.5% | Reduced |
| Bridgeway Capital Management, LLC | 89,547 | $214.0K | 0.00% | +30,000+50.4% | Added |
| Northern Trust Corp | 76,439 | $182.7K | 0.00% | −5,185−6.4% | Reduced |
| State Street Corp | 73,006 | $174.5K | 0.00% | +5,700+8.5% | Added |
| Jane Street Group, LLC | 69,738 | $166.7K | 0.00% | +13,971+25.1% | Added |
| Squarepoint Ops LLC | 64,004 | $153.0K | 0.00% | +1,845+3.0% | Added |
| Empowered Funds, LLC | 59,547 | $142.3K | 0.00% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 50,695 | $121.0K | 0.00% | −13,621−21.2% | Reduced |
| Bank of New York Mellon Corp | 48,451 | $115.8K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 35,895 | $85.8K | 0.00% | −11,494−24.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 30,229 | $72.2K | 0.00% | −5,800−16.1% | Reduced |
| BNP Paribas Arbitrage, SA | 26,864 | $64.2K | 0.00% | +6,254+30.3% | Added |
| National Bank of Canada | 25,000 | $58.8K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 21,703 | $51.9K | 0.00% | +6,647+44.1% | Added |
| Qube Research & Technologies Ltd | 20,611 | $49.3K | 0.00% | −9,706−32.0% | Reduced |
| American Century Companies Inc | 18,881 | $45.1K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 16,831 | $40.2K | 0.00% | −8,171−32.7% | Reduced |
| Two Sigma Advisers, LP | 16,300 | $39.0K | 0.00% | 00.0% | Unchanged |
| Persistent Asset Partners Ltd | 13,565 | $32.4K | 0.02% | +13,565 | New |
| Thomasville National Bank | 13,350 | $31.9K | 0.00% | 00.0% | Unchanged |
| Pinnacle Financial Partners, Inc. | 11,796 | $28.2K | 0.00% | +11,796 | New |
| Two Sigma Securities, LLC | 10,378 | $24.8K | 0.00% | +10,378 | New |
| UBS Group AG | 5,061 | $12.1K | 0.00% | −1,422−21.9% | Reduced |
| JPMorgan Chase & Co | 1,128 | $2.69K | 0.00% | −1,254−52.6% | Reduced |
| Rhumbline Advisers | 928 | $2.22K | 0.00% | 00.0% | Unchanged |
| McIlrath & Eck, LLC | 753 | $1.80K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 450 | $1.08K | 0.00% | +140+45.2% | Added |
| Jones Financial Companies LLLP | 370 | $884 | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 67 | $160 | 0.00% | −255−79.2% | Reduced |
| Larson Financial Group LLC | 21 | $50 | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 8 | $19 | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 1 | $2 | 0.00% | −206−99.5% | Reduced |
| SBI Securities Co., Ltd. | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 186 | $0 | 0.00% | −2,569−93.2% | Reduced |
| CWM, LLC | 23 | $0 | 0.00% | −104−81.9% | Reduced |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −42,816−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −26,156−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −17−100.0% | Sold out |
| Essential Partners LLC | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Synovus Financial Corp | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |