Who owns International Bancshares (IBOC)
Which tracked institutional funds hold IBOC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IBOC company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
93 tracked funds added or opened IBOC while 49 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
IBOC’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IBOC divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 276 tracked filers holding IBOC, 156 increased or opened the position and 133 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in IBOC between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 8
- Walleye Capital LLC$15M
- SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC$3M
- CAPITAL FUND MANAGEMENT S.A.$3M
- HSBC HOLDINGS PLC$2M
- North Reef Capital Management LP$2M
- Jupiter Topco LLC$2M
Full exits 29
- T. Rowe Price Investment Management, Inc.$78M
- Qube Research & Technologies Ltd$9M
- HRT FINANCIAL LP$9M
- CSM Advisors, LLC$9M
- SG Americas Securities, LLC$7M
- BW Gestao de Investimentos Ltda.$6M
Largest adds
- BlackRock, Inc.$260M
- STATE STREET CORP$37M
- DIMENSIONAL FUND ADVISORS LP$33M
- PRICE T ROWE ASSOCIATES INC /MD/$27M
- Boston Trust Walden Corp$26M
- VANGUARD PORTFOLIO MANAGEMENT LLC$26M
Largest trims
- Azora Capital LP$21M
- FIRST TRUST ADVISORS LP$14M
- JANE STREET GROUP, LLC$8M
- Polaris Capital Management, LLC$7M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$4M
- Edgestream Partners, L.P.$4M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 7,048,194 | $535M | 16.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 3,350,198 | $254M | 8.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 3,258,656 | $247M | 7.8% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 3,128,416 | $238M | 7.5% | 2026-Q2 |
| STATE STREET CORP added | 2,810,776 | $213M | 6.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,495,909 | $190M | 6.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,573,378 | $120M | 3.8% | 2026-Q2 |
| Boston Trust Walden Corp added | 1,306,605 | $99M | 3.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,035,745 | $79M | 2.5% | 2026-Q2 |
| Azora Capital LP trimmed | 885,768 | $67M | 2.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 839,850 | $64M | 2.0% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 820,840 | $62M | 2.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 750,864 | $57M | 1.8% | 2026-Q2 |
| REINHART PARTNERS, LLC. added | 749,761 | $57M | 1.8% | 2026-Q2 |
| Tamar Securities, LLC trimmed | 721,211 | $55M | 1.7% | 2026-Q2 |
| NORGES BANK added | 700,374 | $53M | 1.7% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 694,616 | $53M | 1.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 650,775 | $49M | 1.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 587,610 | $45M | 1.4% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 436,744 | $33M | 1.0% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 423,256 | $32M | 1.0% | 2026-Q2 |
| ProShare Advisors LLC added | 377,605 | $29M | 0.9% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 365,865 | $28M | 0.9% | 2026-Q2 |
| Polaris Capital Management, LLC trimmed | 321,100 | $24M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 311,061 | $24M | 0.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 306,839 | $23M | 0.7% | 2026-Q2 |
| MORGAN STANLEY added | 305,785 | $23M | 0.7% | 2026-Q2 |
| Invesco Ltd. trimmed | 298,085 | $23M | 0.7% | 2026-Q2 |
| UBS Group AG added | 237,074 | $18M | 0.6% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 233,830 | $18M | 0.6% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 221,655 | $15M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 219,339 | $17M | 0.5% | 2026-Q2 |
| Walleye Capital LLC new | 200,778 | $15M | 0.5% | 2026-Q2 |
| Cerity Partners LLC trimmed | 195,265 | $15M | 0.5% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 173,495 | $13M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 140,127 | $11M | 0.3% | 2026-Q2 |
| Kovack Advisors, Inc. trimmed | 138,943 | $11M | 0.3% | 2026-Q2 |
| Bridgewater Associates, LP trimmed | 128,587 | $10M | 0.3% | 2026-Q2 |
| Eldred Rock Partners, LLC | 127,460 | $10M | 0.3% | 2026-Q2 |
| MALTESE CAPITAL MANAGEMENT LLC trimmed | 127,113 | $10M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 123,689 | $9M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 118,422 | $9M | 0.3% | 2026-Q2 |
| Swiss National Bank trimmed | 109,200 | $8M | 0.3% | 2026-Q2 |
| DENALI ADVISORS LLC trimmed | 108,480 | $8M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 98,945 | $8M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 91,727 | $7M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 81,735 | $6M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 79,191 | $6M | 0.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 71,372 | $5M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 69,876 | $5M | 0.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 63,529 | $5M | 0.2% | 2026-Q2 |
| Elizabeth Park Capital Advisors, Ltd. | 62,487 | $5M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 61,753 | $5M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 61,497 | $5M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 57,862 | $4M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 57,497 | $4M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 57,471 | $4M | 0.1% | 2026-Q2 |
| Cresta Advisors, Ltd. trimmed | 56,886 | $4M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 55,953 | $4M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 53,447 | $4M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 52,394 | $4M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 51,636 | $4M | 0.1% | 2026-Q2 |
| Vest Financial, LLC trimmed | 50,549 | $4M | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 50,335 | $4M | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 49,863 | $4M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 48,553 | $4M | 0.1% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 46,906 | $4M | 0.1% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 46,293 | $4M | 0.1% | 2026-Q2 |
| Siena Capital Partners GP, LLC | 45,725 | $3M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 44,966 | $3M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 44,750 | $3M | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP added | 44,118 | $3M | 0.1% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 43,865 | $3M | 0.1% | 2026-Q2 |
| VIRGINIA RETIREMENT SYSTEMS ET Al added | 43,280 | $3M | 0.1% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd trimmed | 42,206 | $3M | 0.1% | 2026-Q2 |
| Westover Capital Advisors, LLC trimmed | 41,517 | $3M | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 36,105 | $3M | 0.1% | 2026-Q2 |
| Horizon Investments, LLC added | 34,057 | $3M | 0.1% | 2026-Q2 |
| Holocene Advisors, LP added | 33,394 | $3M | 0.1% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. new | 33,251 | $3M | 0.1% | 2026-Q2 |
| NISA INVESTMENT ADVISORS, LLC added | 31,886 | $2M | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 31,760 | $2M | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 31,104 | $2M | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 28,293 | $2M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 28,263 | $2M | 0.1% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 28,049 | $2M | 0.1% | 2026-Q2 |
| DIVERSIFIED TRUST CO added | 27,202 | $2M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 26,722 | $2M | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 26,684 | $2M | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 26,490 | $2M | 0.1% | 2026-Q2 |
| Creative Planning added | 26,401 | $2M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 26,363 | $2M | 0.1% | 2026-Q2 |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 25,767 | $2M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 25,579 | $2M | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 25,270 | $2M | 0.1% | 2026-Q2 |
| North Reef Capital Management LP trimmed | 25,000 | $2M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 24,681 | $2M | 0.1% | 2026-Q2 |
| Edgestream Partners, L.P. trimmed | 24,123 | $2M | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 24,069 | $2M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 23,883 | $2M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.