XBiotech Inc. (XBIT) — Institutional Holders, Q2 2026
36 institutional investment managers reported a XBIT position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $4.6M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
XBIT in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- GSA CAPITAL PARTNERS LLPNew · +30,654 sh+$70.5K
- CITADEL ADVISORSNew · +29,192 sh+$67.1K
- BlackRockAdded · +28,042 sh+$64.5K
- RENAISSANCE TECHNOLOGIESAdded · +19,225 sh+$44.2K
- Qube Research & Technologies LtdAdded · +14,879 sh+$34.2K
Biggest sellers
- JANE STREET GROUPTrimmed · -48,624 sh-$111.8K
- MILLENNIUM MANAGEMENTTrimmed · -26,210 sh-$60.3K
- MORGAN STANLEYTrimmed · -17,674 sh-$40.6K
- GEODE CAPITAL MANAGEMENTTrimmed · -16,904 sh-$38.9K
- BANK OF AMERICATrimmed · -12,900 sh-$29.7K
XBIT 13F holders ranked 1–36 of 36
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 321,146 sh | 321,146 | $738.6K | 0.00% | +9.6% |
| 2 | GEODE CAPITAL MANAGEMENT#2 · 214,116 sh | 214,116 | $492.8K | 0.00% | -7.3% |
| 3 | VANGUARD CAPITAL MANAGEMENT#3 · 200,182 sh | 200,182 | $460.4K | 0.00% | -0.4% |
| 4 | RBF Capital#4 · 198,501 sh | 198,501 | $456.6K | 0.02% | 0.0% |
| 5 | MORGAN STANLEY#5 · 147,880 sh | 147,880 | $340.1K | 0.00% | -10.7% |
| 6 | BRIDGEWAY CAPITAL MANAGEMENT#6 · 98,447 sh | 98,447 | $226.4K | <0.01% | 0.0% |
| 7 | VANGUARD FIDUCIARY#7 · 92,365 sh | 92,365 | $212.4K | 0.00% | +0.9% |
| 8 | MILLENNIUM MANAGEMENT#8 · 79,330 sh | 79,330 | $182.5K | <0.01% | -24.8% |
| 9 | STATE STREET#9 · 73,006 sh | 73,006 | $167.9K | 0.00% | 0.0% |
| 10 | NORTHERN#10 · 66,258 sh | 66,258 | $152.4K | 0.00% | -12.9% |
| 11 | Empowered Funds#11 · 59,547 sh | 59,547 | $137.0K | <0.01% | 0.0% |
| 12 | RENAISSANCE TECHNOLOGIES#12 · 41,663 sh | 41,663 | $95.8K | <0.01% | +85.7% |
| 13 | Bank of New York Mellon#13 · 39,355 sh | 39,355 | $90.5K | 0.00% | 0.0% |
| 14 | DIMENSIONAL FUND ADVISORS#14 · 36,053 sh | 36,053 | $83.0K | 0.00% | 0.0% |
| 15 | Squarepoint Ops#15 · 34,757 sh | 34,757 | $79.9K | <0.01% | -15.7% |
| 16 | Qube Research & Technologies Ltd#16 · 33,570 sh | 33,570 | $77.2K | <0.01% | +79.6% |
| 17 | GSA CAPITAL PARTNERS LLP#17 · 30,654 sh | 30,654 | $71.0K | <0.01% | New |
| 18 | CITADEL ADVISORS#18 · 29,192 sh | 29,192 | $67.1K | 0.00% | New |
| 19 | Connor, Clark & Lunn Investment Management Ltd.#19 · 27,943 sh | 27,943 | $64.3K | <0.01% | -2.5% |
| 20 | BNP PARIBAS FINANCIAL MARKETS#20 · 26,464 sh | 26,464 | $60.9K | 0.00% | -2.6% |
| 21 | NATIONAL BANK OF CANADA#21 · 25,000 sh | 25,000 | $57.5K | 0.00% | 0.0% |
| 22 | BANK OF AMERICA#22 · 23,789 sh | 23,789 | $54.7K | 0.00% | -35.2% |
| 23 | AMERICAN CENTURY COMPANIES#23 · 18,381 sh | 18,381 | $42.3K | 0.00% | -2.6% |
| 24 | Thomasville National Bank#24 · 13,350 sh | 13,350 | $30.7K | <0.01% | — |
| 25 | XTX Topco Ltd#25 · 13,080 sh | 13,080 | $30.1K | <0.01% | -26.9% |
| 26 | Pinnacle Financial Partners#26 · 11,796 sh | 11,796 | $27.1K | <0.01% | 0.0% |
| 27 | JANE STREET GROUP#27 · 11,476 sh | 11,476 | $26.4K | 0.00% | -80.9% |
| 28 | Vanguard Global Advisers#28 · 7,009 sh | 7,009 | $16.1K | 0.00% | 0.0% |
| 29 | UBS Group AG#29 · 5,035 sh | 5,035 | $11.6K | 0.00% | 0.0% |
| 30 | ROYAL BANK OF CANADA#30 · 1,206 sh | 1,206 | $3.0K | 0.00% | +1.4% |
| 31 | JONES FINANCIAL COMPANIES LLLP#31 · 370 sh | 370 | $862.00 | 0.00% | 0.0% |
| 32 | JPMORGAN CHASE#32 · 96 sh | 96 | $224.00 | 0.00% | 0.0% |
| 33 | BARCLAYS PLC#33 · 94 sh | 94 | $216.00 | 0.00% | New |
| 34 | SBI Securities , Ltd.#34 · 37 sh | 37 | $85.00 | — | 0.0% |
| 35 | Larson Financial Group#35 · 21 sh | 21 | $48.00 | 0.00% | 0.0% |
| 36 | Caitong International Asset Management , Ltd#36 · 11 sh | 11 | $25.00 | 0.00% | 0.0% |
Funds that sold out of XBIT in Q2 2026 (3)
Held XBIT at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| RHUMBLINE ADVISERS928 sh | 928 | $2.2K |
| SRS Capital Advisors15 sh | 15 | $35.00 |
| Optiver Holding B.V.8 sh | 8 | $19.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.