IBOC Institutional Ownership & Shareholders
INTERNATIONAL BANCSHARES CRP (IBOC) is currently held by 302 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $3.31B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of IBOC tracked by InsiderSet, reporting ownership valued at approximately $535.31M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $471.24M, representing an estimated loss of -11.97% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 62% of the total disclosed IBOC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in INTERNATIONAL BANCSHARES CRP (IBOC).
This page ranks the largest institutional IBOC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
302
Total Reported Value
$3.31B
Largest Holder
Blackrock, Inc.
Largest Position
$535.31M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
44
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 7,048,194 | $535,310,355 | $471,242,251 | -$64,068,104 | -11.97% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,350,198 | $254,447,538 | $223,994,238 | -$30,453,300 | -11.97% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,258,656 | $247,496,858 | $217,873,740 | -$29,623,118 | -11.97% | |
| American Century Companies Inc | 0.11% | 3,128,416 | $237,603,195 | $209,165,894 | -$28,437,301 | -11.97% | |
| State Street Corp | 0.01% | 2,810,776 | $213,478,437 | $187,928,483 | -$25,549,954 | -11.97% | |
| Vanguard Capital Management Llc | 0.00% | 2,495,909 | $189,564,289 | $166,876,476 | -$22,687,813 | -11.97% | |
| Geode Capital Management, Llc | 0.01% | 1,573,378 | $119,514,583 | $105,196,053 | -$14,318,530 | -11.98% | |
| T. Rowe Price Investment Management, Inc. | 0.06% | 1,161,106 | $88,187,000 | $77,631,547 | -$10,555,453 | -11.97% | |
| Boston Trust Walden Corp | 0.69% | 1,248,850 | $85,539,980 | $83,498,111 | -$2,041,869 | -2.39% | |
| Goldman Sachs Group Inc | 0.01% | 1,035,745 | $78,664,837 | $69,249,911 | -$9,414,926 | -11.97% | |
| Azora Capital Lp | 2.83% | 885,768 | $67,274,080 | $59,222,448 | -$8,051,632 | -11.97% | |
| Price T Rowe Associates Inc | 0.01% | 839,850 | $63,788,000 | $56,152,371 | -$7,635,629 | -11.97% | |
| First Trust Advisors Lp | 0.04% | 820,840 | $62,342,798 | $54,881,362 | -$7,461,436 | -11.97% | |
| Northern Trust Corp | 0.01% | 750,864 | $57,028,122 | $50,202,767 | -$6,825,355 | -11.97% | |
| Tamar Securities, Llc | 5.12% | 721,211 | $54,775,970 | $48,220,167 | -$6,555,803 | -11.97% | |
| Norges Bank | 0.01% | 700,374 | $53,193,405 | $46,827,006 | -$6,366,399 | -11.97% | |
| Charles Schwab Investment Management Inc | 0.01% | 694,616 | $52,756,085 | $46,442,026 | -$6,314,059 | -11.97% | |
| Reinhart Partners, Llc. | 1.22% | 729,929 | $49,996,487 | $48,803,053 | -$1,193,434 | -2.39% | |
| Millennium Management Llc | 0.03% | 650,775 | $49,426,361 | $43,510,817 | -$5,915,545 | -11.97% | |
| Aqr Capital Management Llc | 0.02% | 587,595 | $44,627,874 | $39,286,602 | -$5,341,272 | -11.97% | |
| Bank Of New York Mellon Corp | 0.01% | 436,744 | $33,170,713 | $29,200,704 | -$3,970,009 | -11.97% | |
| Panagora Asset Management Inc | 0.10% | 423,256 | $32,146,293 | $28,298,896 | -$3,847,397 | -11.97% | |
| Vanguard Fiduciary Trust Co | 0.01% | 365,865 | $27,787,447 | $24,461,734 | -$3,325,713 | -11.97% | |
| Proshare Advisors Llc | 0.04% | 365,627 | $25,043,623 | $24,445,821 | -$597,802 | -2.39% | |
| Bank Of America Corp | 0.00% | 311,061 | $23,625,083 | $20,797,538 | -$2,827,545 | -11.97% | |
| Two Sigma Investments, Lp | 0.02% | 306,839 | $23,304,422 | $20,515,256 | -$2,789,166 | -11.97% | |
| Morgan Stanley | 0.00% | 305,785 | $23,224,409 | $20,444,785 | -$2,779,624 | -11.97% | |
| Invesco Ltd. | 0.00% | 298,085 | $22,639,556 | $19,929,963 | -$2,709,593 | -11.97% | |
| Polaris Capital Management, Llc | 2.19% | 305,400 | $20,918,373 | $20,419,044 | -$499,329 | -2.39% | |
| Mackenzie Financial Corp | 0.02% | 269,422 | $18,454,060 | $18,013,555 | -$440,505 | -2.39% | |
| Ubs Group Ag | 0.00% | 237,074 | $18,005,770 | $15,850,768 | -$2,155,002 | -11.97% | |
| Nuveen, Llc | 0.00% | 219,339 | $16,658,724 | $14,665,006 | -$1,993,718 | -11.97% | |
| Walleye Capital Llc | 0.07% | 200,778 | $15,249,089 | $13,424,017 | -$1,825,072 | -11.97% | |
| Alliancebernstein L.P. | 0.00% | 221,655 | $14,915,165 | $14,819,853 | -$95,312 | -0.64% | |
| Cerity Partners Llc | 0.02% | 195,265 | $14,830,000 | $13,055,418 | -$1,774,582 | -11.97% | |
| Rhumbline Advisers | 0.01% | 173,495 | $13,176,917 | $11,599,876 | -$1,577,041 | -11.97% | |
| Csm Advisors, Llc | 0.27% | 165,542 | $12,573,000 | $11,068,138 | -$1,504,862 | -11.97% | |
| Kovack Advisors, Inc. | 0.51% | 138,943 | $10,701,389 | $9,289,729 | -$1,411,660 | -13.19% | |
| Bridgewater Associates, Lp | 0.04% | 128,587 | $9,766,183 | $8,597,327 | -$1,168,856 | -11.97% | |
| Maltese Capital Management Llc | 1.76% | 127,113 | $9,654,232 | $8,498,775 | -$1,155,457 | -11.97% | |
| Jpmorgan Chase & Co | 0.00% | 118,422 | $9,194,438 | $7,917,695 | -$1,276,743 | -13.89% | |
| Eldred Rock Partners, Llc | 1.94% | 127,460 | $8,730,373 | $8,521,976 | -$208,397 | -2.39% | |
| Principal Financial Group Inc | 0.00% | 126,635 | $8,673,864 | $8,466,816 | -$207,048 | -2.39% | |
| Swiss National Bank | 0.00% | 109,200 | $8,293,740 | $7,301,112 | -$992,628 | -11.97% | |
| Denali Advisors Llc | 0.83% | 108,480 | $8,239,056 | $7,252,973 | -$986,083 | -11.97% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 107,679 | $7,245,720 | $7,199,418 | -$46,302 | -0.64% | |
| D. E. Shaw & Co., Inc. | 0.00% | 91,727 | $6,966,666 | $6,132,867 | -$833,799 | -11.97% | |
| Citadel Advisors Llc | 0.00% | 81,735 | $6,207,773 | $5,464,802 | -$742,971 | -11.97% | |
| Victory Capital Management Inc | 0.00% | 79,191 | $6,014,557 | $5,294,710 | -$719,847 | -11.97% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 71,372 | $5,420,703 | $4,771,932 | -$648,771 | -11.97% |
Frequently asked questions about IBOC
Who are the largest institutional holders of IBOC?
The largest institutional holders of IBOC reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, American Century Companies Inc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported IBOC position.
What is IBOC institutional ownership?
This page tracks IBOC positions reported by institutional investment managers through SEC Form 13F. INTERNATIONAL BANCSHARES CRP (IBOC) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own IBOC?
InsiderSet currently tracks 302 institutional managers reporting IBOC holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of IBOC shareholders.
How much IBOC stock do institutions own?
Institutional investment managers disclosed approximately $3.31B in IBOC holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was IBOC institutional ownership last updated?
The latest IBOC institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional IBOC holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its IBOC position after the reporting date.
Are institutions buying or selling IBOC?
Institutional buying and selling can be analyzed by comparing IBOC positions across consecutive 13F reporting periods. InsiderSet's IBOC Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View IBOC ownership changes.
How has IBOC institutional ownership changed over time?
InsiderSet tracks IBOC institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.