Vault-13

INTERNATIONAL BANCSHARES COR IBOC

COM · Common Stock · CUSIP 459044103

American financial services company

175 institutional holders
41,150,33041.2m shares reported held*
66.2% of all shares outstanding*
$1.8bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.1m this quarter). Holder counts are more reliable. Shares outstanding: 62.1m as of 2022-10-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $42.60. Options: 2 managers hold calls ($523.0k notional), 1 hold puts ($0).

Biggest calls

Biggest puts

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 5.5% new 3.4m≈ $260.4m 2026-04-29
AMERICAN CENTURY INVESTMENT MANAGEMENT INC 13G · institution new · filed 2026-02-13 5.2% new 3.2m≈ $242.9m 2026-02-13
DIMENSIONAL FUND ADVISORS LP 13G · institution filed 2025-10-09 5.2% 3.2m≈ $243.5m 2025-10-09

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 0 sellingQ1 22: 1 buyingQ1 22: 0 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 1 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—0——
Q1 20221$1.3k0——
Q2 20220—0——
Q3 20221$1.3k0——
DateInsiderTradeSharesPrice ValueTheir holding
2022-08-25 ZUNIGA DIANA G Director Bought plan 30 $43.32 $1.3k30 shares +<1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 6,378,4076.4m $271.1m $271.1m 0.01% —
2 BlackRock Inc. 0.01% of their portfolio New York, NY 6,221,2276.2m $264.4m $264.4m 0.01% —
3 DIMENSIONAL FUND ADVISORS LP 0.07% of their portfolio AUSTIN, TX 4,364,2744.4m $185.5m $185.5m 0.07% —
4 WELLINGTON MANAGEMENT GROUP LLP 0.04% of their portfolio Boston, MA 4,216,6644.2m $179.2m $179.2m 0.04% —
5 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 2,225,3942.2m $94.6m $94.6m 0.01% —
6 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio SAN FRANCISCO, CA 1,409,5241.4m $59.9m $59.9m 0.02% —
7 Polaris Capital Management, LLC 1.95% of their portfolio BOSTON, MA 1,170,5061.2m $49.7m $49.7m 1.95% —
8 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 1,010,6421.0m $43.0m $43.0m 0.01% —
9 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 848,006848.0k $36.0m $36.0m 0.01% —
10 Azora Capital LP 5.00% of their portfolio MIAMI, FL 793,276793.3k $33.7m $33.7m 5.00% —
11 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 738,414738.4k $31.4m $31.4m 0.01% —
12 GOLDMAN SACHS GROUP INC 0.01% of their portfolio NEW YORK, NY 637,146637.1k $27.1m $27.1m 0.01% —
13 CITADEL ADVISORS LLC 0.03% of their portfolio MIAMI, FL 619,464619.5k $26.3m $26.3m 0.03% —
14 Tamar Securities, LLC 7.22% of their portfolio Woodland Hills, CA 531,336531.3k $22.6m $22.6m 7.22% —
15 NORGES BANK 0.01% of their portfolio OSLO, Q8 520,731520.7k $22.1m $22.1m 0.01% —
16 REINHART PARTNERS, LLC. 1.36% of their portfolio MEQUON, WI 435,467435.5k $22.1m $22.1m 1.36% —
17 AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio Greenwich, CT 433,248433.2k $18.4m $18.4m 0.04% —
18 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 362,174362.2k $15.4m $15.4m 0.01% —
19 North Reef Capital Management LP 3.73% of their portfolio LAGUNA BEACH, CA 351,859351.9k $15.0m $15.0m 3.73% —
20 KENNEDY CAPITAL MANAGEMENT LLC 0.43% of their portfolio ST LOUIS, MO 344,533344.5k $14.6m $14.6m 0.43% —
21 AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio KANSAS CITY, MO 317,679317.7k $13.5m $13.5m 0.01% —
22 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 315,210315.2k $13.4m $13.4m 0.00% —
23 SOL Capital Management CO 2.29% of their portfolio ROCKVILLE, MD 258,775258.8k $11.0m $11.0m 2.29% —
24 VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio ATLANTA, GA 247,141247.1k $10.5m $10.5m 0.01% —
25 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 233,967234.0k $9.9m $9.9m 0.00% —
26 Balyasny Asset Management L.P. 0.04% of their portfolio Chicago, IL 224,592224.6k $9.5m $9.5m 0.04% —
27 MALTESE CAPITAL MANAGEMENT LLC 2.21% of their portfolio New York, NY 218,400218.4k $9.3m $9.3m 2.21% —
28 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 213,775213.8k $9.1m $9.1m 0.01% —
29 Elizabeth Park Capital Advisors, Ltd. 4.05% of their portfolio PEPPER PIKE, OH 207,939207.9k $8.8m $8.8m 4.05% —
30 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 205,944205.9k $8.8m $8.8m 0.01% —
31 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 199,538199.5k $8.5m $8.5m 0.00% —
32 ProShare Advisors LLC 0.03% of their portfolio BETHESDA, MD 197,707197.7k $8.4m $8.4m 0.03% —
33 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 188,232188.2k $8.0m $8.0m 0.01% —
34 VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio San Antonio, TX 181,344181.3k $7.7m $7.7m 0.01% —
35 Kovack Advisors, Inc. 1.12% of their portfolio FT. LAUDERDALE, FL 179,794179.8k $7.6m $7.6m 1.12% —
36 HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.03% of their portfolio Los Angeles, CA 161,641161.6k $6.9m $6.9m 0.03% —
37 Rhino Investment Partners, Inc 3.08% of their portfolio WEST CONSHOHOCKEN, PA 160,121160.1k $6.8m $6.8m 3.08% —
38 PANAGORA ASSET MANAGEMENT INC 0.04% of their portfolio BOSTON, MA 144,402144.4k $6.1m $6.1m 0.04% —
39 Swiss National Bank 0.00% of their portfolio ZURICH, V8 134,800134.8k $5.7m $5.7m 0.00% —
40 Brandywine Global Investment Management, LLC 0.05% of their portfolio PHILADELPHIA, PA 132,415132.4k $5.6m $5.6m 0.05% —
41 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio BOSTON, MA 129,983130.0k $5.5m $5.5m 0.01% —
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 118,663118.7k $5.0m $5.0m 0.00% —
43 AMERICAN INTERNATIONAL GROUP, INC. 0.03% of their portfolio New York, NY 108,384108.4k $4.6m $4.6m 0.03% —
44 BHZ CAPITAL MANAGEMENT, LP 2.27% of their portfolio San Jose, CA 104,702104.7k $4.5m $4.5m 2.27% —
45 PRUDENTIAL FINANCIAL INC 0.01% of their portfolio NEWARK, NJ 101,381101.4k $4.3m $4.3m 0.01% —
46 DENALI ADVISORS LLC 2.00% of their portfolio SAN DIEGO, CA 99,40099.4k $4.2m $4.2m 2.00% —
47 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 99,06699.1k $4.2m $4.2m 0.00% —
48 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio ALBANY, NY 98,78598.8k $4.2m $4.2m 0.01% —
49 MERCER GLOBAL ADVISORS INC /ADV 0.02% of their portfolio DENVER, CO 98,08398.1k $4.2m $4.2m 0.02% —
50 FIRST TRUST ADVISORS LP 0.01% of their portfolio Wheaton, IL 97,21897.2k $4.1m $4.1m 0.01% —
51 ExodusPoint Capital Management, LP 0.06% of their portfolio NEW YORK, NY 96,40096.4k $4.1m $4.1m 0.06% —
52 GW&K Investment Management, LLC 0.04% of their portfolio BOSTON, MA 92,48892.5k $3.9m $3.9m 0.04% —
53 Legal & General Group Plc 0.00% of their portfolio London, X0 78,34278.3k $3.3m $3.3m 0.00% —
54 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 70,09270.1k $3.0m $3.0m 0.01% —
55 Retirement Systems of Alabama 0.01% of their portfolio MONTGOMERY, AL 69,26369.3k $2.9m $2.9m 0.01% —
56 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 66,60066.6k $2.8m $2.8m 0.00% —
57 South Dakota Investment Council 0.07% of their portfolio SIOUX FALLS, SD 65,97366.0k $2.8m $2.8m 0.07% —
58 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 62,23862.2k $2.6m $2.6m 0.00% —
59 MetLife Investment Management, LLC 0.02% of their portfolio Whippany, NJ 62,19662.2k $2.6m $2.6m 0.02% —
60 Gyon Technologies Capital Management, LP 0.70% of their portfolio DENVILLE, NJ 52,69352.7k $2.2m $2.2m 0.70% —
61 Cresta Advisors, Ltd. 2.74% of their portfolio LAREDO, TX 52,17252.2k $2.2m $2.2m 2.74% —
62 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 51,51051.5k $2.2m $2.2m 0.00% —
63 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 50,06450.1k $2.1m $2.1m 0.00% —
64 JACOBS ASSET MANAGEMENT, LLC 1.08% of their portfolio NEW YORK, NY 50,00050.0k $2.1m $2.1m 1.08% —
65 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 49,85149.9k $2.1m $2.1m 0.00% —
66 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 47,95848.0k $2.0m $2.0m 0.00% —
67 TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.02% of their portfolio FRANKFORT, KY 47,39947.4k $2.0m $2.0m 0.02% —
68 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 45,78645.8k $1.9m $1.9m 0.00% —
69 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 45,40445.4k $1.9m $1.9m 0.00% —
70 9258 Wealth Management, LLC 0.49% of their portfolio BLUE ASH, OH 44,66144.7k $1.9m $1.9m 0.49% —
71 ALGERT GLOBAL LLC 0.11% of their portfolio SAN FRANCISCO, CA 43,04743.0k $1.8m $1.8m 0.11% —
72 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.02% of their portfolio New York, NY 42,51142.5k $1.8m $1.8m 0.02% —
73 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 42,01742.0k $1.8m $1.8m 0.00% —
74 PRELUDE CAPITAL MANAGEMENT, LLC 0.08% of their portfolio NEW YORK, NY 38,61038.6k $1.6m $1.6m 0.08% —
75 NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio NEW YORK, NY 38,11938.1k $1.6m $1.6m 0.00% —
76 TEXAS PERMANENT SCHOOL FUND CORP 0.03% of their portfolio AUSTIN, TX 38,05238.1k $1.6m $1.6m 0.03% —
77 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 37,09137.1k $1.6m $1.6m 0.00% —
78 AMALGAMATED BANK 0.01% of their portfolio NEW YORK, NY 35,16135.2k $1.5m $1.5m 0.01% —
79 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 32,48532.5k $1.4m $1.4m 0.00% —
80 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 32,44632.4k $1.4m $1.4m 0.00% —
81 NISA INVESTMENT ADVISORS, LLC 0.01% of their portfolio ST. LOUIS, MO 31,59331.6k $1.3m $1.3m 0.01% —
82 WINTON GROUP Ltd 0.08% of their portfolio LONDON, X0 29,76029.8k $1.3m $1.3m 0.08% —
83 YOUSIF CAPITAL MANAGEMENT, LLC 0.02% of their portfolio BLOOMFIELD HILLS, MI 27,05927.1k $1.1m $1.1m 0.02% —
84 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 26,36326.4k $1.1m $1.1m 0.00% —
85 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 25,00625.0k $1.1m $1.1m 0.00% —
86 COMERICA BANK 0.01% of their portfolio DALLAS, TX 23,85423.9k $1.2m $1.2m 0.01% —
87 VIRGINIA RETIREMENT SYSTEMS ET Al 0.01% of their portfolio RICHMOND, VA 23,40023.4k $994.5k $994.5k 0.01% —
88 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 22,91722.9k $974.0k $974.0k 0.00% —
89 MSD Partners, L.P. 0.11% of their portfolio NEW YORK, NY 22,72022.7k $966.0k $966.0k 0.11% —
90 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 22,45422.5k $954.0k $954.0k 0.00% —
91 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio HARRISBURG, PA 20,97621.0k $891.0k $891.0k 0.01% —
92 SummerHaven Investment Management, LLC 0.57% of their portfolio STAMFORD, CT 19,21719.2k $817.0k $817.0k 0.57% —
93 ONTARIO TEACHERS PENSION PLAN BOARD 0.01% of their portfolio Toronto, A6 18,70418.7k $795.0k $795.0k 0.01% —
94 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 18,20018.2k $773.0k $773.0k 0.00% —
95 Ameritas Investment Partners, Inc. 0.03% of their portfolio LINCOLN, NE 17,82317.8k $757.0k $757.0k 0.03% —
96 TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio AUSTIN, TX 15,54715.5k $661.0k $661.0k 0.00% —
97 ARIZONA STATE RETIREMENT SYSTEM 0.01% of their portfolio PHOENIX, AZ 15,45015.4k $657.0k $657.0k 0.01% —
98 OREGON PUBLIC EMPLOYEES RETIREMENT FUND 0.01% of their portfolio TIGARD, OR 15,44415.4k $656.0k $656.0k 0.01% —
99 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 14,86714.9k $632.0k $632.0k 0.00% —
100 Thrivent Financial for Lutherans 0.00% of their portfolio Minneapolis, MN 14,10214.1k $599.0k $599.0k 0.00% —