XBiotech XBIT Institutional Ownership

NASDAQ XBIT

$2.18 +0.00 (+0.00%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

36 Institutions

Increased 9 25.0%

Unchanged 14 38.9%

Reduced 13 36.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

6.50%

▼-0.69 pp QoQ

Shares Held by Institutions

1.98Mn

of 30.49Mn outstanding

▼-9.52% QoQ

Shares Outstanding

30.49Mn

28.51Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-1 vs prior quarter

Net Shares Added (QoQ)

-208.39K

distributed since last quarter

Value of Holdings

$4.36Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

XBiotech Inc. (NASDAQ:XBIT) is held by 36 institutional investors per 13F filings through June 2026.

Collectively, these holders controlled 6.5% of XBiotech's outstanding shares in June 2026, down from 7.2% in March 2026.
They decreased total shares held in XBIT by -9.52% quarter over quarter, and investors in XBiotech decreased 30.77% from a year ago.
During the quarter, 9 of these 36 funds increased positions in XBIT, 13 reduced exposure, and 14 held steady.
Institutional investors collectively held 1.98Mn shares in XBiotech as of June 2026, down by 208.39K shares quarter on quarter, and down 1.41Mn shares year over year.
As of June 30, 2026, the biggest holder of XBiotech is BlackRock, Inc. at 321.15K shares, representing 1.05% of shares outstanding.
The most significant purchases of XBIT for the quarter ending June 2026 came from GSA CAPITAL PARTNERS LLP (30.65K), CITADEL ADVISORS LLC (29.19K), BlackRock, Inc. (28.04K), RENAISSANCE TECHNOLOGIES LLC (19.23K), Qube Research & Technologies Ltd (14.88K).
The largest sales of XBIT for the quarter ending June 2026 came from RBF Capital, LLC (198.5K), JANE STREET GROUP, LLC (48.62K), MILLENNIUM MANAGEMENT LLC (26.21K), Morgan Stanley (17.67K), GEODE CAPITAL MANAGEMENT, LLC (16.9K).
Per Business Quant, the top 10 investors in XBIT for the quarter ending June 2026 include BlackRock, Inc. (321.15K), GEODE CAPITAL MANAGEMENT, LLC (214.12K), VANGUARD CAPITAL MANAGEMENT LLC (200.18K), RBF Capital, LLC (198.5K), Morgan Stanley (147.88K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (98.45K), VANGUARD FIDUCIARY TRUST CO (92.36K), MILLENNIUM MANAGEMENT LLC (79.33K), State Street Corp (73.01K), Northern Trust Corp (66.26K).

Form 13F Holdings

36 Institutional Holders

Report period 30 Jun, 2026

Total shares held 1.98Mn

Of outstanding 6.50%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	321,146	1.05%	▲28,042	+9.57%	$738.64K
2	GEODE CAPITAL MANAGEMENT, LLC	0001214717	214,116	0.70%	▼16,904	-7.32%	$492.76K
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	200,182	0.66%	▼789	-0.39%	$460.42K
4	RBF Capital, LLC	0001134621	198,501	0.65%	▼198,501	-50.00%	$456.55K
5	Morgan Stanley	0000895421	147,880	0.49%	▼17,674	-10.68%	$340.12K
6	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	98,447	0.32%	0	0.00%	$226.43K
7	VANGUARD FIDUCIARY TRUST CO	0000933478	92,365	0.30%	▲789	+0.86%	$212.44K
8	MILLENNIUM MANAGEMENT LLC	0001273087	79,330	0.26%	▼26,210	-24.83%	$182.46K
9	State Street Corp	0000093751	73,006	0.24%	0	0.00%	$167.91K
10	Northern Trust Corp	0000073124	66,258	0.22%	▼9,829	-12.92%	$152.39K
11	Empowered Funds, LLC	0001592828	59,547	0.20%	0	0.00%	$136.96K
12	RENAISSANCE TECHNOLOGIES LLC	0001037389	41,663	0.14%	▲19,225	+85.68%	$95.83K
13	Bank of New York Mellon Corp	0001390777	39,355	0.13%	0	0.00%	$90.52K
14	DIMENSIONAL FUND ADVISORS LP	0000354204	36,053	0.12%	0	0.00%	$82.99K
15	Squarepoint Ops LLC	0001642575	34,757	0.11%	▼6,457	-15.67%	$79.94K
16	Qube Research & Technologies Ltd	0001729829	33,570	0.11%	▲14,879	+79.61%	$77.21K
17	GSA CAPITAL PARTNERS LLP	0001362033	30,654	0.10%	▲30,654	0.00%	$71
18	CITADEL ADVISORS LLC	0001423053	29,192	0.10%	▲29,192	0.00%	$67.14K
19	Connor, Clark & Lunn Investment Management Ltd.	0001596800	27,943	0.09%	▼720	-2.51%	$64.27K
20	BNP PARIBAS FINANCIAL MARKETS	0001166588	26,464	0.09%	▼700	-2.58%	$60.87K

Showing 1 to 20 of 36 holders