Stock

XBiotech Inc.

XBIT · held by 41 managers

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025

Reported value

$5.48M

Holders

+1 new · −1 exited

Holders’ est. mark

−$42.5K

Price effect on 3 books still in the name

Largest holder

$715.9K

Vanguard

Notable conviction

Share of each notable manager’s 13F book.

Fidelity0.0% · $1.08K
State Street0.0% · $174.5K
Vanguard0.0% · $715.9K

Holder count by quarter

Q4 2020 Q1 2021 Q2 2021 Q3 2021 Q4 2021 Q1 2022 Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026

Who holds it

Notable only

Investor	Shares	Value	Est. mark	Change
Vanguard	299.6K	$715.9K	—	Held
BlackRock, Inc.	288.6K	$689.8K	—	Held
GEODE CAPITAL MANAGEMENT, LLC	221.1K	$528.7K	—	Held
RBF Capital, LLC	198.5K	$474.4K	—	Held
AMERIPRISE FINANCIAL INC	186.8K	$446.4K	—	Held
MORGAN STANLEY	163.4K	$390.6K	−$32.8K	Added$67.5K
MILLENNIUM MANAGEMENT LLC	135.4K	$323.7K	—	Held
BRIDGEWAY CAPITAL MANAGEMENT, LLC	89.5K	$214K	—	Held
NORTHERN TRUST CORP	76.4K	$182.7K	—	Held
State Street	73K	$174.5K	—	Held
JANE STREET GROUP, LLC	69.7K	$166.7K	—	Held
Squarepoint Ops LLC	64K	$153K	—	Held
Empowered Funds, LLC	59.5K	$142.3K	—	Held
DIMENSIONAL FUND ADVISORS LP	50.7K	$121K	—	Held
Bank of New York Mellon Corp	48.5K	$115.8K	—	Held
BANK OF AMERICA CORP /DE/	35.9K	$85.8K	−$9.69K	Cut−$40.3K
Connor, Clark & Lunn Investment Management Ltd.	30.2K	$72.2K	—	Held
BNP PARIBAS FINANCIAL MARKETS	26.9K	$64.2K	—	Held
NATIONAL BANK OF CANADA /FI/	25K	$58.8K	—	Held
XTX Topco Ltd	21.7K	$51.9K	—	Held
Qube Research & Technologies Ltd	20.6K	$49.3K	—	Held
AMERICAN CENTURY COMPANIES INC	18.9K	$45.1K	—	Held
GOLDMAN SACHS GROUP INC	16.8K	$40.2K	—	Held
TWO SIGMA ADVISERS, LP	16.3K	$39K	—	Held
Persistent Asset Partners Ltd	13.6K	$32.4K	—	New
Thomasville National Bank	13.3K	$31.9K	—	Held
Pinnacle Financial Partners, Inc.	11.8K	$28.2K	—	Held
TWO SIGMA SECURITIES, LLC	10.4K	$24.8K	—	Held
UBS Group AG	5.06K	$12.1K	—	Held
JPMORGAN CHASE & CO	1.13K	$2.69K	—	Held
RHUMBLINE ADVISERS	928	$2.22K	—	Held
McIlrath & Eck, LLC	753	$1.8K	—	Held
Fidelity	450	$1.08K	—	Held
JONES FINANCIAL COMPANIES LLLP	370	$884	—	Held
SIMPLEX TRADING, LLC	67	$160	—	Held
Larson Financial Group LLC	21	$50	—	Held
Optiver Holding B.V.	8	$19	—	Held
SBI Securities Co., Ltd.	1	$2	—	Held
BARCLAYS PLC	1	$2	−$1	Cut−$549
CWM, LLC	23	$0	—	Held
ROYAL BANK OF CANADA	186	$0	—	Held

Who left

Essential Partners LLC$43

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.