International Bancshares IBOC Institutional Ownership

NASDAQ IBOC

$66.02 -0.28 (-0.42%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

300 Institutions

Increased 165 55.0%

Unchanged 50 16.7%

Reduced 85 28.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

71.15%

▲+2.20 pp QoQ

Shares Held by Institutions

44.25Mn

of 62.19Mn outstanding

▲+3.21% QoQ

Shares Outstanding

62.19Mn

17.94Mn held outside 13F filers

Institutional Investors

300

filed 13F for Jun 2026

▲+9 vs prior quarter

Net Shares Added (QoQ)

+1.38Mn

accumulated since last quarter

Value of Holdings

$2.92Bn

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

Updated Oct 11, 2026

International Bancshares Corp (NASDAQ:IBOC) had 300 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

These investors held 71.15% of International Bancshares' outstanding shares at the end of Q2 2026, up from 68.95% in Q1 2026.
Total holdings of International Bancshares shares rose 3.21% from Q1 2026, and the number of holders rose 18.58% from Q2 2025.
Looking at the 300 holders of IBOC individually, 165 added to their positions, 85 reduced their stakes and 50 left their positions unchanged.
Institutional investors held 44.25Mn shares of International Bancshares in total at the end of Q2 2026, up 1.38Mn from the prior quarter and up 1.85Mn from a year earlier.
As of June 30, 2026, the biggest holder of International Bancshares was BlackRock, Inc. with 7.05Mn shares, or 11.33% of shares outstanding.
The biggest increases in IBOC positions during Q2 2026 came from BlackRock, Inc. (+403.1K shares), T. Rowe Price Associates Inc (+295.04K shares), Boston Trust Walden Corp (+218.94K shares), State Street Corp (+185.88K shares) and Mackenzie Financial Corp (+178.82K shares).
Holders that trimmed the most shares of International Bancshares in Q2 2026 while keeping a position were Azora Capital LP (-426.91K shares), First Trust Advisors LP (-316.73K shares), Polaris Capital Management, LLC (-141.9K shares), Jane Street Group, LLC (-117.3K shares) and American Century Companies Inc (-100.16K shares).
International Bancshares' 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (7.05Mn shares), Vanguard Portfolio Management LLC (3.35Mn shares), Dimensional Fund Advisors LP (3.26Mn shares), American Century Companies Inc (3.13Mn shares), State Street Corp (2.81Mn shares), Vanguard Capital Management LLC (2.5Mn shares), Geode Capital Management, LLC (1.57Mn shares), Boston Trust Walden Corp (1.31Mn shares), T. Rowe Price Investment Management, Inc. (1.16Mn shares) and Goldman Sachs Group Inc (1.04Mn shares), per Business Quant data.

Form 13F Holdings

301 Institutional Holders

Report period 30 Jun, 2026

Total shares held 44.25Mn

Of outstanding 71.15%

#	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	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
20	AQR CAPITAL MANAGEMENT LLC	0001167557	587,595	0.94%	▲91,729	+18.50%	$44.63Mn

Showing 1 to 20 of 301 holders