XBiotech
XBIT
37 hedge funds and large institutions have $4.68M invested in XBiotech in 2026 Q1 according to their latest regulatory filings, with 6 funds opening new positions, 8 increasing their positions, 12 reducing their positions, and 8 closing their positions.
1,154% more call options, than puts
Call options by funds: $163K | Put options by funds: $13K
0.99% less ownership
Funds ownership: 7.53% → 6.54% (-0.99%)
10% less funds holding
Funds holding: 41 → 37 (-4)
15% less capital invested
Capital invested by funds: $5.48M → $4.68M (-$802K)
25% less first-time investments, than exits
New positions opened: 6 | Existing positions closed: 8
33% less repeat investments, than reductions
Existing positions increased: 8 | Existing positions reduced: 12
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Renaissance Technologies
New York
|
+$54.3K |
| 2 |
Geode Capital Management
Boston,
Massachusetts
|
+$23.9K |
| 3 |
BCM
Bridgeway Capital Management
Houston,
Texas
|
+$21.5K |
| 4 |
BlackRock
New York
|
+$10.8K |
| 5 |
Morgan Stanley
New York
|
+$5.16K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Ameriprise
Minneapolis,
Minnesota
|
-$446K |
| 2 |
Millennium Management
New York
|
-$72.3K |
| 3 |
Squarepoint
New York
|
-$55.1K |
| 4 |
Goldman Sachs
New York
|
-$40.2K |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
-$35.4K |
XBIT Hedge Fund Activity: Q1 2026 in Review
37 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in XBiotech (XBIT) for Q1 2026, worth a combined $4.68M — down 15% from $5.48M a quarter earlier.
Sellers outnumbered buyers: 8 funds closed out of XBIT and 6 opened new positions — a net loss of 2 holders — while 12 trimmed existing stakes and 8 added.
The largest buyer was Renaissance Technologies, opening a new position worth an estimated $54.3K. The largest seller was Ameriprise, exiting entirely with an estimated $446K sold.
- 37 institutional investors held XBiotech (XBIT) as of Q1 2026, down from 41 in Q4 2025.
- Funds reported $4.68M of XBiotech stock for Q1 2026, down 15% quarter-over-quarter.
- 6 funds opened new XBiotech positions in Q1 2026 and 8 closed out, a net change of -2 holders.
- The largest XBiotech buyer in Q1 2026 was Renaissance Technologies, an estimated $54.3K added.
- The largest XBiotech seller in Q1 2026 was Ameriprise, an estimated $446K sold.
Based on aggregated 13F filings for Q1 2026.