DOSSIER · 13F Holders · Q2 2026
XBIT

XBIOTECH INC

40 institutions still hold XBIOTECH INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 98400H102·40 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$4M
visible holders
Holders
40
filers reporting
Concentration
16.78%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

40 institutions reported XBIT in Q2 2026. BlackRock, Inc. leads at 16.8% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$739K321K0.00%Q2 2026
02
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$469K214K0.00%Q3 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$460K200K0.00%Q2 2026
04
RBF Capital, LLC
CIK 0001134621
$457K199K0.02%Q2 2026
05
MORGAN STANLEY
CIK 0000895421
$340K148K0.00%Q2 2026
06
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$226K98K0.00%Q2 2026
07
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$212K92K0.00%Q2 2026
08
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$182K79K0.00%Q2 2026
09
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$170K74K0.00%Q2 2026
10
STATE STREET CORP
CIK 0000093751
$168K73K0.00%Q2 2026
11
NORTHERN TRUST CORP
CIK 0000073124· Index
$152K66K0.00%Q2 2026
12
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$141K60K0.00%Q1 2026
13
Empowered Funds, LLC
CIK 0001592828
$137K60K0.00%Q2 2026
14
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$96K42K0.00%Q2 2026
15
Bank of New York Mellon Corp
CIK 0001390777
$86K39K0.00%Q3 2026
16
Squarepoint Ops LLC
CIK 0001642575
$80K35K0.00%Q2 2026
17
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$78K35K0.00%Q3 2026
18
Qube Research & Technologies Ltd
CIK 0001729829
$77K34K0.00%Q2 2026
19
CITADEL ADVISORS LLC
CIK 0001423053
$67K29K0.00%Q2 2026
20
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$64K28K0.00%Q2 2026
Page 1 of 2
20 more holders available. Log in →
Insiders at XBIOTECH INC
Simard Jan-Paul →Simard John →Rademaker Craig Evan →Soffer David Spencer →Kuendig Thomas Martin →Troy Tevi David →Waldin Jan-Paul →Macadam Donald H. →