INTERNATIONAL BANCSHARES CRP (IBOC) Institutional Shareholders
INTERNATIONAL BANCSHARES CRP (IBOC) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.35B in IBOC holdings during the latest filing period.
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 $495.07M, representing an estimated loss of -7.52% 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
295
Total Reported Value
$3.35B
Largest Holder
Blackrock, Inc.
Largest Position
$535.31M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
47
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 | $495,065,147 | -$40,245,208 | -7.52% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,350,198 | $254,447,538 | $235,317,908 | -$19,129,630 | -7.52% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,258,656 | $247,496,858 | $228,887,997 | -$18,608,861 | -7.52% | |
| American Century Companies Inc | 0.11% | 3,128,416 | $237,603,195 | $219,739,940 | -$17,863,255 | -7.52% | |
| State Street Corp | 0.01% | 2,810,776 | $213,478,437 | $197,428,906 | -$16,049,531 | -7.52% | |
| Vanguard Capital Management Llc | 0.00% | 2,495,909 | $189,564,289 | $175,312,648 | -$14,251,641 | -7.52% | |
| Geode Capital Management, Llc | 0.01% | 1,573,378 | $119,514,583 | $110,514,071 | -$9,000,512 | -7.53% | |
| Boston Trust Walden Corp | 0.76% | 1,306,605 | $99,236,664 | $91,775,935 | -$7,460,729 | -7.52% | |
| T. Rowe Price Investment Management, Inc. | 0.06% | 1,161,106 | $88,187,000 | $81,556,085 | -$6,630,915 | -7.52% | |
| Goldman Sachs Group Inc | 0.01% | 1,035,745 | $78,664,837 | $72,750,729 | -$5,914,108 | -7.52% | |
| Azora Capital Lp | 2.83% | 885,768 | $67,274,080 | $62,216,344 | -$5,057,736 | -7.52% | |
| Price T Rowe Associates Inc | 0.01% | 839,850 | $63,788,000 | $58,991,064 | -$4,796,936 | -7.52% | |
| First Trust Advisors Lp | 0.04% | 820,840 | $62,342,798 | $57,655,802 | -$4,686,996 | -7.52% | |
| Northern Trust Corp | 0.01% | 750,864 | $57,028,122 | $52,740,687 | -$4,287,435 | -7.52% | |
| Reinhart Partners, Llc. | 1.30% | 749,761 | $56,945,617 | $52,663,213 | -$4,282,404 | -7.52% | |
| Tamar Securities, Llc | 5.12% | 721,211 | $54,775,970 | $50,657,861 | -$4,118,109 | -7.52% | |
| Norges Bank | 0.01% | 700,374 | $53,193,405 | $49,194,270 | -$3,999,135 | -7.52% | |
| Charles Schwab Investment Management Inc | 0.01% | 694,616 | $52,756,085 | $48,789,828 | -$3,966,257 | -7.52% | |
| Millennium Management Llc | 0.03% | 650,775 | $49,426,361 | $45,710,436 | -$3,715,925 | -7.52% | |
| Aqr Capital Management Llc | 0.02% | 587,595 | $44,627,874 | $41,272,673 | -$3,355,201 | -7.52% | |
| Bank Of New York Mellon Corp | 0.01% | 436,744 | $33,170,713 | $30,676,899 | -$2,493,814 | -7.52% | |
| Panagora Asset Management Inc | 0.10% | 423,256 | $32,146,293 | $29,729,501 | -$2,416,792 | -7.52% | |
| Proshare Advisors Llc | 0.04% | 377,605 | $28,679,099 | $26,522,975 | -$2,156,124 | -7.52% | |
| Vanguard Fiduciary Trust Co | 0.01% | 365,865 | $27,787,447 | $25,698,358 | -$2,089,089 | -7.52% | |
| Polaris Capital Management, Llc | 2.30% | 321,100 | $24,387,545 | $22,554,064 | -$1,833,481 | -7.52% | |
| Bank Of America Corp | 0.00% | 311,061 | $23,625,083 | $21,848,925 | -$1,776,158 | -7.52% | |
| Two Sigma Investments, Lp | 0.02% | 306,839 | $23,304,422 | $21,552,371 | -$1,752,051 | -7.52% | |
| Morgan Stanley | 0.00% | 305,785 | $23,224,409 | $21,478,338 | -$1,746,071 | -7.52% | |
| Invesco Ltd. | 0.00% | 298,085 | $22,639,556 | $20,937,490 | -$1,702,066 | -7.52% | |
| Ubs Group Ag | 0.00% | 237,074 | $18,005,770 | $16,652,078 | -$1,353,692 | -7.52% | |
| Mackenzie Financial Corp | 0.02% | 233,830 | $17,759,388 | $16,424,219 | -$1,335,169 | -7.52% | |
| Nuveen, Llc | 0.00% | 219,339 | $16,658,724 | $15,406,371 | -$1,252,353 | -7.52% | |
| Walleye Capital Llc | 0.07% | 200,778 | $15,249,089 | $14,102,647 | -$1,146,442 | -7.52% | |
| Alliancebernstein L.P. | 0.00% | 221,655 | $14,915,165 | $15,569,047 | +$653,882 | +4.38% | |
| Cerity Partners Llc | 0.02% | 195,265 | $14,830,000 | $13,715,414 | -$1,114,586 | -7.52% | |
| Rhumbline Advisers | 0.01% | 173,495 | $13,176,917 | $12,186,289 | -$990,628 | -7.52% | |
| Csm Advisors, Llc | 0.27% | 165,542 | $12,573,000 | $11,627,670 | -$945,330 | -7.52% | |
| Kovack Advisors, Inc. | 0.51% | 138,943 | $10,701,389 | $9,759,356 | -$942,033 | -8.80% | |
| Bridgewater Associates, Lp | 0.04% | 128,587 | $9,766,183 | $9,031,951 | -$734,232 | -7.52% | |
| Eldred Rock Partners, Llc | 2.08% | 127,460 | $9,680,587 | $8,952,790 | -$727,797 | -7.52% | |
| Maltese Capital Management Llc | 1.76% | 127,113 | $9,654,232 | $8,928,417 | -$725,815 | -7.52% | |
| Principal Financial Group Inc | 0.00% | 123,689 | $9,394,179 | $8,687,915 | -$706,264 | -7.52% | |
| Jpmorgan Chase & Co | 0.00% | 118,422 | $9,194,438 | $8,317,961 | -$876,477 | -9.53% | |
| Swiss National Bank | 0.00% | 109,200 | $8,293,740 | $7,670,208 | -$623,532 | -7.52% | |
| Denali Advisors Llc | 0.83% | 108,480 | $8,239,056 | $7,619,635 | -$619,421 | -7.52% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 107,679 | $7,245,720 | $7,563,373 | +$317,653 | +4.38% | |
| D. E. Shaw & Co., Inc. | 0.00% | 91,727 | $6,966,666 | $6,442,904 | -$523,762 | -7.52% | |
| Citadel Advisors Llc | 0.00% | 81,735 | $6,207,773 | $5,741,066 | -$466,707 | -7.52% | |
| Victory Capital Management Inc | 0.00% | 79,191 | $6,014,557 | $5,562,376 | -$452,181 | -7.52% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 71,372 | $5,420,703 | $5,013,169 | -$407,534 | -7.52% |
Frequently asked questions about IBOC
Who owns the most IBOC stock?
The largest holders of IBOC are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for INTERNATIONAL BANCSHARES CRP (IBOC).
Is IBOC widely held by superinvestors?
Many widely followed stocks like IBOC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IBOC is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.