INTERNATIONAL BANCSHARES COR IBOC
COM · Common Stock · CUSIP 459044103
American financial services company
* 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 ($7.9m this quarter). Holder counts are more reliable. Shares outstanding: 62.2m as of 2025-08-04, 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 ≈ $66.59. Options: 1 managers hold calls ($0 notional), 1 hold puts ($0).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 175 |
| Q4 2022 | 196 |
| Q1 2023 | 188 |
| Q2 2023 | 192 |
| Q3 2023 | 186 |
| Q4 2023 | 201 |
| Q1 2024 | 199 |
| Q2 2024 | 210 |
| Q3 2024 | 237 |
| Q4 2024 | 243 |
| Q1 2025 | 252 |
| Q2 2025 | 256 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 74 | 98 |
| Q4 2023 | 103 | 83 |
| Q1 2024 | 92 | 85 |
| Q2 2024 | 93 | 87 |
| Q3 2024 | 108 | 98 |
| Q4 2024 | 122 | 99 |
| Q1 2025 | 118 | 112 |
| Q2 2025 | 130 | 105 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $0 | $0 | — |
| Q4 2024 | $0 | $6.3k | — |
| Q1 2025 | $0 | $0 | — |
| Q2 2025 | $0 | $0 | — |
Biggest buyers
| AMERICAN CENTURY COMPANIES INC | Added | +466.9k |
| AQR CAPITAL MANAGEMENT LLC | Added | +331.3k |
| T. Rowe Price Investment Management, Inc. | Added | +200.1k |
| Azora Capital LP | Added | +142.9k |
| CSM Advisors, LLC | New | +138.2k |
| MILLENNIUM MANAGEMENT LLC | Added | +73.2k |
| ProShare Advisors LLC | Added | +70.3k |
| GOLDMAN SACHS GROUP INC | Added | +67.6k |
| SG Americas Securities, LLC | Added | +61.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Added | +50.3k |
Biggest sellers
| DIMENSIONAL FUND ADVISORS LP | Reduced | -161.6k |
| STATE STREET CORP | Reduced | -153.4k |
| SEI INVESTMENTS CO | Reduced | -143.2k |
| Nuveen, LLC | Reduced | -129.4k |
| NORTHERN TRUST CORP | Reduced | -116.9k |
| Corebridge Financial, Inc. | Sold out | -85.2k |
| BOOTHBAY FUND MANAGEMENT, LLC | Sold out | -85.0k |
| BlackRock, Inc. | Reduced | -82.4k |
| Prime Capital Investment Advisors, LLC | Reduced | -82.3k |
| JACOBS ASSET MANAGEMENT, LLC | Sold out | -70.0k |
Biggest calls
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
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.
| Holder | Stake |
|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.5% |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC 13G · institution new · filed 2026-02-13 | 5.2% |
| DIMENSIONAL FUND ADVISORS LP 13G · institution filed 2025-10-09 | 5.2% |
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 Q2 2025
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 1 | $12.9m | — |
| Q1 2024 | 0 | — | 1 | $2.2m | — |
| Q2 2024 | 0 | — | 1 | $4.7m | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 1 | $7.2m | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 6.8m $449.8m | Reduced -82.4k |
| VANGUARD GROUP INC 0.01% of their portfolio | 6.3m $422.1m | Added +2.1k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 3.3m $219.8m | Reduced -161.6k |
| AMERICAN CENTURY COMPANIES INC 0.10% of their portfolio | 2.9m $192.1m | Added +466.9k |
| STATE STREET CORP 0.01% of their portfolio | 2.6m $170.7m | Reduced -153.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 2.2m $145.9m | Added +50.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.4m $94.1m | Added +13.9k |
| Boston Trust Walden Corp 0.67% of their portfolio | 1.4m $93.5m | Added +7.0k |
| FIRST TRUST ADVISORS LP 0.07% of their portfolio | 1.3m $83.3m | Added +21.2k |
| Azora Capital LP 3.28% of their portfolio | 1.1m $72.6m | Added +142.9k |
| REINHART PARTNERS, LLC. 1.79% of their portfolio | 788.4k $52.5m | Added +10.7k |
| Tamar Securities, LLC 5.84% of their portfolio | 722.6k $48.1m | Added +4.5k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 694.5k $46.2m | Reduced -116.9k |
| NORGES BANK 0.01% of their portfolio | 674.0k $44.9m | Added +13.9k |
| AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 659.4k $43.9m | Added +331.3k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 615.5k $41.0m | Added +67.6k |
| T. Rowe Price Investment Management, Inc. 0.02% of their portfolio | 581.8k $38.7m | Added +200.1k |
| Polaris Capital Management, LLC 2.54% of their portfolio | 573.6k $38.2m | Reduced -40.2k |
| ProShare Advisors LLC 0.07% of their portfolio | 546.2k $36.4m | Added +70.3k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 483.9k $32.2m | Added +1.5k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 385.5k $25.7m | Added +73.2k |
| PANAGORA ASSET MANAGEMENT INC 0.11% of their portfolio | 368.5k $24.5m | Added +8.1k |
| MORGAN STANLEY 0.00% of their portfolio | 284.6k $18.9m | Added +8.6k |
| Invesco Ltd. 0.00% of their portfolio | 274.4k $18.3m | Reduced -15.3k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 210.0k $14.0m | Added +3.3k |
| SOL Capital Management CO 1.33% of their portfolio | 205.9k $13.7m | Reduced -5.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 184.7k $12.3m | Reduced -1.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 176.8k $11.8m | Added +9.4k |
| ALGERT GLOBAL LLC 0.22% of their portfolio | 158.4k $10.5m | Added +20.9k |
| Nuveen, LLC 0.00% of their portfolio | 143.3k $9.5m | Reduced -129.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 141.4k $9.4m | Reduced -34.0k |
| Brandywine Global Investment Management, LLC 0.07% of their portfolio | 139.3k $9.3m | Reduced -5.4k |
| CSM Advisors, LLC 0.27% of their portfolio | 138.2k $9.2m | New |
| Kovack Advisors, Inc. 0.89% of their portfolio | 136.1k $9.1m | Reduced -10.1k |
| BARCLAYS PLC 0.00% of their portfolio | 130.0k $8.7m | Added +37.9k |
| Eldred Rock Partners, LLC 2.62% of their portfolio | 129.7k $8.6m | Reduced -4.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 122.7k $8.2m | Reduced -32.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 114.6k $7.6m | Added +22.6k |
| Swiss National Bank 0.00% of their portfolio | 106.9k $7.1m | Reduced -1.6k |
| DENALI ADVISORS LLC 0.71% of their portfolio | 102.4k $6.8m | Added +400 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.02% of their portfolio | 100.5k $6.7m | Reduced -22.8k |
| MALTESE CAPITAL MANAGEMENT LLC 0.93% of their portfolio | 100.0k $6.7m | Unchanged |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 98.2k $6.5m | Reduced -2.0k |
| UBS Group AG 0.00% of their portfolio | 93.7k $6.2m | Reduced -46 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 93.7k $6.2m | Reduced -2.5k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 91.1k $6.1m | Reduced -100 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 90.0k $6.0m | Reduced -2.6k |
| Legal & General Group Plc 0.00% of their portfolio | 89.4k $5.9m | Added +1.3k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 83.5k $5.6m | Reduced -252 |
| SG Americas Securities, LLC 0.02% of their portfolio | 81.8k $5.4m | Added +61.9k |
| CITIGROUP INC 0.00% of their portfolio | 81.3k $5.4m | Reduced -40.5k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 71.2k $4.7m | Added +17.1k |
| HARBOR CAPITAL ADVISORS, INC. 0.20% of their portfolio | 70.0k $4.7m | Reduced -116 |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 69.8k $4.6m | Reduced -22.6k |
| Retirement Systems of Alabama 0.02% of their portfolio | 65.3k $4.3m | Added +211 |
| GW&K Investment Management, LLC 0.04% of their portfolio | 65.3k $4.3m | Reduced -2.7k |
| Vest Financial, LLC 0.06% of their portfolio | 64.3k $4.3m | Added +13.5k |
| Cresta Advisors, Ltd. 2.00% of their portfolio | 61.5k $4.1m | Reduced -1.3k |
| MetLife Investment Management, LLC 0.02% of their portfolio | 60.4k $4.0m | Added +329 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 59.9k $4.0m | Reduced -1.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 53.0k $3.5m | Reduced -2.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 51.6k $3.4m | Added +132 |
| Mirae Asset Global Investments Co., Ltd. 0.01% of their portfolio | 48.6k $3.2m | Added +5.0k |
| MERCER GLOBAL ADVISORS INC /ADV 0.01% of their portfolio | 47.8k $3.2m | Added +699 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 46.4k $3.1m | Added +5.0k |
| Westover Capital Advisors, LLC 0.61% of their portfolio | 46.1k $3.1m | Reduced -2.1k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 44.4k $3.0m | Added +4.7k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 43.3k $2.9m | Added +3.6k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.02% of their portfolio | 43.0k $2.9m | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 41.3k $2.7m | Reduced -3.7k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.02% of their portfolio | 39.7k $2.6m | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 38.4k $2.6m | Reduced -5.4k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 36.6k $2.4m | Reduced -3.3k |
| DARK FOREST CAPITAL MANAGEMENT LP 0.09% of their portfolio | 35.0k $2.3m | Added +9.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 34.9k $2.3m | Added +13.1k |
| NISA INVESTMENT ADVISORS, LLC 0.01% of their portfolio | 31.2k $2.1m | Added +192 |
| INTECH INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 30.2k $2.0m | Reduced -17.6k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 29.9k $2.0m | Reduced -2.3k |
| Horizon Investments, LLC 0.03% of their portfolio | 27.0k $1.8m | New |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 26.9k $1.8m | Added +4.2k |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 26.6k $1.8m | Reduced -955 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 26.4k $1.8m | Added +13.6k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 25.4k $1.7m | Added +3 |
| AMALGAMATED BANK 0.01% of their portfolio | 23.5k $1.6m | Reduced -384 |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 22.3k $1.5m | Reduced -29.1k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 22.0k $1.5m | Added +2.8k |
| State of Tennessee, Department of Treasury 0.01% of their portfolio | 21.7k $1.4m | Unchanged |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 21.3k $1.4m | Added +8.1k |
| Susquehanna Portfolio Strategies, LLC 0.03% of their portfolio | 21.2k $1.4m | New |
| HANCOCK WHITNEY CORP 0.03% of their portfolio | 20.2k $1.3m | Added +262 |
| DIVERSIFIED TRUST CO 0.03% of their portfolio | 20.2k $1.3m | Added +240 |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.01% of their portfolio | 20.1k $1.3m | Reduced -283 |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 19.7k $1.3m | Reduced -3.9k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 18.9k $1.3m | Unchanged |
| WINTON GROUP Ltd 0.06% of their portfolio | 18.6k $1.2m | Added +1.1k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 18.0k $1.2m | Unchanged |
| YOUSIF CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 17.9k $1.2m | Reduced -309 |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 16.8k $1.1m | New |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio | 16.3k $1.1m | Added +322 |
| ARIZONA STATE RETIREMENT SYSTEM 0.01% of their portfolio | 16.3k $1.1m | Added +280 |