International Bancshares IBOC Institutional Ownership

NASDAQ IBOC

$68.50 -0.44 (-0.64%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

302 Institutions

Increased 166 55.0%

Unchanged 51 16.9%

Reduced 85 28.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

72.27%

▲+3.32 pp QoQ

Shares Held by Institutions

44.94Mn

of 62.18Mn outstanding

▲+6.23% QoQ

Shares Outstanding

62.18Mn

17.24Mn held outside 13F filers

Institutional Investors

302

filed 13F for Jun 2026

▲+11 vs prior quarter

Net Shares Added (QoQ)

+2.63Mn

accumulated since last quarter

Value of Holdings

$3.08Bn

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

International Bancshares Corp (NASDAQ:IBOC) has 302 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 72.3% of outstanding shares in June 2026, up from 69.0% in March 2026.
They increased total shares held in International Bancshares by 6.23% from last quarter, and the number of investors in IBOC increased 18.9% annually.
Among the 302 funds, 166 bought more International Bancshares shares, 85 sold down, and 51 held their ground.
In total, institutional investors held 44.94Mn shares in International Bancshares as of June 2026, up by 2.63Mn shares quarter on quarter, and up 2.55Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in International Bancshares with 7.05Mn shares, accounting for 11.33% of total shares outstanding.
The biggest buyers of International Bancshares for the quarter ending June 2026 included NORGES BANK (700.37K), Sixth Street Partners Management Company, L.P. (694.62K), BlackRock, Inc. (403.1K), PRICE T ROWE ASSOCIATES INC /MD/ (295.04K), Boston Trust Walden Corp (218.94K).
Top sellers of IBOC stock for the quarter ending June 2026 included Azora Capital LP (426.91K), FIRST TRUST ADVISORS LP (316.73K), Polaris Capital Management, LLC (141.9K), JANE STREET GROUP, LLC (117.3K), AMERICAN CENTURY COMPANIES INC (100.16K).
International Bancshares's 10 largest shareholders as of June 2026 include BlackRock, Inc. (7.05Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.35Mn), DIMENSIONAL FUND ADVISORS LP (3.26Mn), AMERICAN CENTURY COMPANIES INC (3.13Mn), State Street Corp (2.81Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.5Mn), GEODE CAPITAL MANAGEMENT, LLC (1.57Mn), Boston Trust Walden Corp (1.31Mn), T. Rowe Price Investment Management, Inc. (1.16Mn), Goldman Sachs Group Inc (1.04Mn) per Business Quant data.

Form 13F Holdings

302 Institutional Holders

Report period 30 Jun, 2026

Total shares held 44.94Mn

Of outstanding 72.27%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	7,048,194	11.33%	▲403,102	+6.07%	$535.31Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,350,198	5.39%	▼51,411	-1.51%	$254.45Mn
3	DIMENSIONAL FUND ADVISORS LP	0000354204	3,258,656	5.24%	▲71,836	+2.25%	$247.50Mn
4	AMERICAN CENTURY COMPANIES INC	0000748054	3,128,416	5.03%	▼100,162	-3.10%	$237.60Mn
5	State Street Corp	0000093751	2,810,776	4.52%	▲185,882	+7.08%	$213.48Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,495,909	4.01%	▲21,395	+0.86%	$189.56Mn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,573,378	2.53%	▲82,481	+5.53%	$119.51Mn
8	Boston Trust Walden Corp	0001534866	1,306,605	2.10%	▲218,944	+20.13%	$99.24Mn
9	T. Rowe Price Investment Management, Inc.	0001897612	1,161,106	1.87%	▼1,376	-0.12%	$88.19K
10	Goldman Sachs Group Inc	0000886982	1,035,745	1.67%	▲111,826	+12.10%	$78.66Mn
11	Azora Capital LP	0001700272	885,768	1.42%	▼426,906	-32.52%	$67.27Mn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	839,850	1.35%	▲295,036	+54.15%	$63.79K
13	FIRST TRUST ADVISORS LP	0001125816	820,840	1.32%	▼316,732	-27.84%	$62.34Mn
14	Northern Trust Corp	0000073124	750,864	1.21%	▲83,890	+12.58%	$57.03Mn
15	REINHART PARTNERS, LLC.	0001080298	749,761	1.21%	▲4,065	+0.55%	$56.95Mn
16	Tamar Securities, LLC	0001703081	721,211	1.16%	▼35,729	-4.72%	$54.78Mn
17	NORGES BANK	0001374170	700,374	1.13%	▲700,374	0.00%	$53.19Mn
18	Sixth Street Partners Management Company, L.P.	0001812095	694,616	1.12%	▲694,616	0.00%	$52.76Mn
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	694,616	1.12%	▼9,417	-1.34%	$52.76Mn
19	MILLENNIUM MANAGEMENT LLC	0001273087	650,775	1.05%	▼61,660	-8.65%	$49.43Mn

Showing 1 to 20 of 302 holders