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, Q1 2026
Institutional positions in XBiotech Inc. as of Mar 31, 2026. 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
- 37
- −2 vs. Q4 2025
- Shares held
- 1.99M
- +10.4K (+0.5%) vs. Q4 2025
- Total value
- $4.68M
- −$54.2K (−1.1%) vs. Q4 2025
- New holders
- 6
- 8 more added
- Sold out
- 8
- 12 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding XBiotech Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Optiver Holding B.V. | 8 | $19 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 11 | $26 | 0.00% | +11 | New |
| CWM, LLC | 13 | $31 | 0.00% | −10−43.5% | Reduced |
| SRS Capital Advisors, Inc. | 15 | $35 | 0.00% | +15 | New |
| Larson Financial Group LLC | 21 | $49 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 37 | $87 | 0.00% | +36+3,600.0% | Added |
| JPMorgan Chase & Co | 96 | $218 | 0.00% | −1,032−91.5% | Reduced |
| Jones Financial Companies LLLP | 370 | $840 | 0.00% | 00.0% | Unchanged |
| McIlrath & Eck, LLC | 753 | $1.77K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,189 | $2.00K | 0.00% | +1,003+539.2% | Added |
| Rhumbline Advisers | 928 | $2.18K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 5,035 | $11.8K | 0.00% | −26−0.5% | Reduced |
| Vanguard Global Advisers, LLC | 7,009 | $16.5K | 0.00% | +7,009 | New |
| Pinnacle Financial Partners, Inc. | 11,796 | $27.7K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 17,901 | $42.1K | 0.00% | −3,802−17.5% | Reduced |
| Qube Research & Technologies Ltd | 18,691 | $43.9K | 0.00% | −1,920−9.3% | Reduced |
| American Century Companies Inc | 18,881 | $44.4K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 22,438 | $52.7K | 0.00% | +22,438 | New |
| National Bank of Canada | 25,000 | $58.8K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 27,164 | $63.8K | 0.00% | +300+1.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 28,663 | $67.4K | 0.00% | −1,566−5.2% | Reduced |
| Dimensional Fund Advisors LP | 36,053 | $84.5K | 0.00% | −14,642−28.9% | Reduced |
| Bank of America Corp | 36,689 | $86.2K | 0.00% | +794+2.2% | Added |
| Bank of New York Mellon Corp | 39,355 | $92.5K | 0.00% | −9,096−18.8% | Reduced |
| Squarepoint Ops LLC | 41,214 | $96.9K | 0.00% | −22,790−35.6% | Reduced |
| Empowered Funds, LLC | 59,547 | $139.9K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 60,100 | $141.2K | 0.00% | −9,638−13.8% | Reduced |
| State Street Corp | 73,006 | $171.6K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 76,087 | $178.8K | 0.00% | −352−0.5% | Reduced |
| Vanguard Fiduciary Trust Co | 91,576 | $215.2K | 0.00% | +91,576 | New |
| Bridgeway Capital Management, LLC | 98,447 | $231.3K | 0.00% | +8,900+9.9% | Added |
| Millennium Management LLC | 105,540 | $248.0K | 0.00% | −29,898−22.1% | Reduced |
| Morgan Stanley | 165,554 | $389.1K | 0.00% | +2,135+1.3% | Added |
| RBF Capital, LLC | 198,501 | $466.5K | 0.02% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 200,971 | $472.3K | 0.00% | +200,971 | New |
| Geode Capital Management, LLC | 231,020 | $543.2K | 0.00% | +9,899+4.5% | Added |
| BlackRock, Inc. | 293,104 | $688.8K | 0.00% | +4,472+1.5% | Added |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −186,796−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −16,831−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −16,300−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −13,565−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −10,378−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −450−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −67−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Thomasville National Bank | – | – | – | – | Not filed |