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IBOC · International Bancshares Corp · Holdings

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$68.11 -0.83 (-1.20%)
Market Cap
$4.24B
Shares
62.19M
Volume · Oct 7 401.66K Avg daily vol (3M) 332K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 302
Total Value: $3,362,944,393
Total Shares: 44,278,638
Showing 1–100 of 302 holdings by value · page 1 of 4

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 302 13F filers
Top Holder
15.9%
Sep 2023 → Jun 2026 · range 15.4% – 16.8%
of institutional value
Top 5
44.3%
Sep 2023 → Jun 2026 · range 44.3% – 53.8%
of institutional value
Top 10
61.4%
Sep 2023 → Jun 2026 · range 61.4% – 68.9%
of institutional value
HHI
558
Sep 2023 → Jun 2026 · range 558 – 748
Broadly held
Showing 100 of 302
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 315709 CUSIP 459044103 13F (30d) 6 filings 6 filers Visit website Investor relations