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International Bancshares IBOC

US equityMarket cap rank #2219
$69.49 −$0.35 (-0.50%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $69.49 0.00%
Open$69.85
Prev close$69.84
Day range$68.93 – $69.91
Volume428.4K
Market cap$4.32B
P/E (TTM)10.5
Dividend yield2.06%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership71.9%+0.02 pts vs. prior quarter
Institutions holding362+0 vs. prior quarter
Insider trades (recent)6 buys / 22 sellsNet selling
Short interest3.37% of floatDays to cover 6.1 · as of 15 Sep 2026
Short-sale volume share22.4%5-day average of daily volume

Short-sale volume as % of daily volume

16%20%25%29%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$803.0K (10 inflow days, 10 outflow days).

The five largest holders on file together own 32.6% of shares outstanding.

Largest holders

  • BlackRock11.33%
  • Antonio Sanchez5.62%
  • Vanguard Portfolio Management, LLC5.39%
  • Dimensional Fund Advisors5.24%
  • American Century Investment Management5.03%
  • Vanguard Capital Management, LLC4.60%
  • State Street Global Advisors4.52%
  • Dennis Nixon3.59%

By investor type

  • Mutual Fund61.64%
  • Individual/Insider9.64%
  • Hedge Fund6.04%
  • Public Company1.69%
  • Sovereign Wealth Fund1.13%
  • Government Pension Fund0.71%
  • Private Company0.29%
  • VC/PE Fund0.20%

Reported short interest has risen from 2.63% to 3.37% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 2,097,139 3.4% 6.1
31 Aug 2026 1,779,951 2.9% 7.2
14 Aug 2026 1,826,576 2.9% 5.1
31 Jul 2026 1,710,343 2.8% 6.2
15 Jul 2026 1,687,312 2.7% 5.5
30 Jun 2026 1,638,119 2.6% 2.8

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