Security key
459044103
INTERNATIONAL BANCSHARES CORP - Common Stock (IBOC)
CUSIP: 459044103
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 42,835,488
- Total 13F value
- $2,882,419,177
- Share change
- -547,906
- SEC-reported price per share
- $67.29
- Number of holders
- 291
- Value change
- -$35,891,484
- Number of buys
- 158
- Number of sells
- 96
- Shares outstanding
- 62,222,033
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
291
Top holders
10
IBOC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
INTERNATIONAL BANCSHARES CORP SEC filings
INTERNATIONAL BANCSHARES CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 459044103
Recent filing periods:
Ownership snapshot
Top reported holders of IBOC - INTERNATIONAL BANCSHARES CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD PORTFOLIO MANAGE...
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.5%
13D/G row: VANGUARD PORTFOLIO MANAGEMENT LLC
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD PORTFOLIO MANAGEMENT LLC leads the comparable SEC ownership view at 5.5%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD PORTFOLIO MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD PORTFOLIO MANAGEMENT LLC
5.5%
DIMENSIONAL FUND ADVISORS LP
5.2%
AMERICAN CENTURY INVESTMENT MANAG...
5.2%
Antonio R. Sanchez Jr.
5.6%
BlackRock, Inc.
11%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
Vanguard Portfolio Management
|
5.5%
|
$230,699,324
3,428,434 shares
|
$0 | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
5.2%
|
$220,429,343
3,206,231 shares
|
$0 | 30 Sep 2025 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
5.2%
|
$218,738,918
3,198,405 shares
|
$0 | 31 Dec 2025 |
| Antonio R. Sanchez Jr. |
3/4/5
Director, 10%+ Owner
|
5.6%
|
$233,274,485
3,494,238 shares
|
-$8,311,200 | 14 Aug 2025 |
| BlackRock, Inc. |
13F
Company
|
11%
|
$445,807,565
6,709,927 shares
|
— | 31 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
10%
|
$413,202,784
6,219,187 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
291
Shares
42,835,488
Rows available
291
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
266
Q1 2026 holders
291
Holder diff
25
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend