International Bancshares Corporation
DE ˙ DB ˙ US4590441030
59,50 € ↓ -1,50 (-2,46%)
2026-06-04
DEL PRIS
SecurityDE:IB4 / International Bancshares Corporation
InstitutionQuantbot Technologies LP
Latest Disclosed Ownership29,180 shares
Latest Disclosed Value $ 1,963,522
Quantbot Technologies LP ownership in IB4 / International Bancshares Corporation

On May 13, 2026 - Quantbot Technologies LP filed a 13F-HR form disclosing ownership of 29,180 shares of International Bancshares Corporation (DE:IB4) valued at $1,721,620 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 12, 2023 disclosing 0 shares of International Bancshares Corporation. The current value of the position is $1,736,210 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 29,180 29,180 1,964 0.0803
2023-05-12 2023-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -2,144 -100.00 0 -100.00
2023-02-13 2022-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 2,144 2,144 98 0.0070
2022-11-07 2022-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -1,872 -100.00 0 -100.00
2022-08-09 2022-06-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,872 682 57.31 75 50.00 0.0069
2022-05-16 2022-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,190 1,190 50 0.0044
2022-02-11 2021-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -2,292 -100.00 0 -100.00
2021-11-09 2021-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 2,292 942 69.78 95 66.67 0.0069
2021-08-12 2021-06-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,350 1,350 57 0.0045
2021-02-12 2020-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -2,849 -100.00 0 -100.00
2020-11-16 2020-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 2,849 2,849 74 0.0085
2020-02-10 2019-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -778 -100.00 0 -100.00
2019-11-12 2019-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 778 778 30 0.0030
2018-05-11 2018-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -1,037 -100.00 0 -100.00
2018-02-12 2017-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,037 1,037 41 0.0038
2017-11-07 2017-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -6,819 -100.00 0 -100.00
2017-08-11 2017-06-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 6,819 5,419 387.07 239 387.76 0.0225
2017-05-10 2017-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,400 -4,453 -76.08 49 -79.41 0.0051
2017-02-09 2016-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 5,853 5,853 318.07 238 385.71 0.0264
2016-10-31 2016-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -4,437 -100.00 0 -100.00
2016-08-02 2016-06-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 4,437 4,437 0.00 115 0.0122
2016-04-28 2016-03-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -1,188 -100.00 0 -100.00
2016-01-22 2015-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 1,188 1,188 0.00 30 0.0051
2015-10-22 2015-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -9,224 -100.00 0 -100.00
2015-07-27 2015-06-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 9,224 9,224 0.00 247 0.0443
2015-01-27 2014-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 0 -3,498 -100.00 0 -100.00
2014-10-15 2014-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 3,498 698 24.93 86 17.81 0.0118
2014-01-31 2013-12-31 13F INTERNATIONAL BANCSHARES CRP COM 459044103 2,800 100 3.70 73 25.86 0.0357
2013-10-28 2013-09-30 13F INTERNATIONAL BANCSHARES CRP COM 459044103 2,700 2,700 58 0.0359
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.