International Bancshares Corporation
DE ˙ DB ˙ US4590441030
59,50 € ↓ -1,50 (-2,46%)
2026-06-04
DEL PRIS
SecurityDE:IB4 / International Bancshares Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership46,737 shares
Latest Disclosed Value $ 3,144,932
Citigroup Inc reports 28.32% increase in ownership of IB4 / International Bancshares Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 46,737 shares of International Bancshares Corporation (DE:IB4) valued at $2,757,483 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 36,421 shares of International Bancshares Corporation. This represents a change in shares of 28.32% during the quarter. The current value of the position is $2,780,852 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)
2026-05-11 2026-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 46,737 10,316 28.32 3,145 29.97 0.0013
2026-02-13 2025-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 36,421 2,842 8.46 2,420 4.81 0.0011
2025-11-10 2025-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 33,579 -47,703 -58.69 2,309 -57.34 0.0010
2025-08-11 2025-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 81,282 -40,490 -33.25 5,410 -29.54 0.0027
2025-05-12 2025-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 121,772 39,101 47.30 7,679 47.06 0.0039
2025-02-12 2024-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 82,671 5,393 6.98 5,222 13.01 0.0031
2024-11-12 2024-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 77,278 11,834 18.08 4,620 23.40 0.0027
2024-08-12 2024-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 65,444 13,464 25.90 3,744 28.31 0.0024
2024-05-10 2024-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 51,980 11,234 27.57 2,918 31.86 0.0019
2024-02-09 2023-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 40,746 25,962 175.61 2,213 245.78 0.0016
2023-12-06 2023-09-30 13F/A-1 INTERNATIONAL BANCSHARES COR COM 459044103 14,784 -33,159 -69.16 641 -69.80 0.0005
2023-11-09 2023-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 14,784 -33,159 641 0.0002
2023-08-10 2023-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 47,943 41,960 701.32 2,119 727.73 0.0014
2023-05-11 2023-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 5,983 -960 -13.83 256 -19.24 0.0002
2023-02-09 2022-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 6,943 -7,924 -53.30 318 -49.84 0.0003
2022-11-10 2022-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 14,867 5,885 65.52 632 75.56 0.0005
2022-08-10 2022-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 8,982 2,092 30.36 360 24.14 0.0003
2022-05-12 2022-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 6,890 -10,409 -60.17 290 -60.44 0.0002
2022-02-10 2021-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 17,299 6,845 65.48 733 68.51 0.0004
2021-11-10 2021-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 10,454 -16,246 -60.85 435 -62.04 0.0003
2021-08-10 2021-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 26,700 1,629 6.50 1,146 -1.46 0.0007
2021-05-13 2021-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 25,071 11,586 85.92 1,163 130.30 0.0008
2021-02-11 2020-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 13,485 6,967 106.89 505 197.06 0.0003
2020-11-12 2020-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 6,518 -18,226 -73.66 170 -78.54 0.0001
2020-08-12 2020-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 24,744 -416 -1.65 792 16.99 0.0006
2020-05-12 2020-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 25,160 -6,475 -20.47 677 -50.29 0.0006
2020-02-12 2019-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 31,635 22,791 257.70 1,362 298.25 0.0010
2019-11-08 2019-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 8,844 -2,528 -22.23 342 -20.28 0.0003
2019-08-12 2019-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 11,372 4,010 54.47 429 53.21 0.0003
2019-05-13 2019-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 7,362 -10,754 -59.36 280 -55.06 0.0003
2019-02-12 2018-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 18,116 3,165 21.17 623 -7.29 0.0006
2018-11-13 2018-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 14,951 13,831 1,234.91 672 1,300.00 0.0006
2018-08-10 2018-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 1,120 -267 -19.25 48 -11.11 0.0000
2018-05-11 2018-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 1,387 -182 -11.60 54 -14.29 0.0000
2018-02-12 2017-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 1,569 -13,269 -89.43 63 -89.41 0.0001
2017-11-13 2017-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 14,838 -877 -5.58 595 7.99 0.0005
2017-08-11 2017-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 15,715 -1,051 -6.27 551 -7.24 0.0005
2017-05-12 2017-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 16,766 -114,639 -87.24 594 -88.92 0.0005
2017-02-10 2016-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 131,405 90,688 222.73 5,361 342.33 0.0048
2016-11-10 2016-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 40,717 10,572 35.07 1,212 54.20 0.0011
2016-08-12 2016-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 30,145 -38,184 -55.88 786 -53.35 0.0008
2016-05-13 2016-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 68,329 27,022 65.42 1,685 58.66 0.0019
2016-02-12 2015-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 41,307 888 2.20 1,062 5.04 0.0011
2015-11-13 2015-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 40,419 23,504 138.95 1,011 122.20 0.0009
2015-08-13 2015-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 16,915 -13,942 -45.18 455 -43.34 0.0004
2015-05-14 2015-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 30,857 -7,827 -20.23 803 -21.81 0.0008
2015-02-17 2014-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 38,684 -65,090 -62.72 1,027 -59.87 0.0009
2014-11-14 2014-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 103,774 9,753 10.37 2,559 0.83 0.0022
2014-08-14 2014-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 94,021 -13,021 -12.16 2,538 -5.44 0.0024
2014-05-15 2014-03-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 107,042 -49,654 -31.69 2,684 -35.11 0.0027
2014-02-14 2013-12-31 13F INTERNATIONAL BANCSHARES COR COM 459044103 156,696 45,476 40.89 4,136 71.98 0.0037
2013-11-14 2013-09-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 111,220 -16,515 -12.93 2,405 -16.64 0.0023
2013-08-14 2013-06-30 13F INTERNATIONAL BANCSHARES COR COM 459044103 127,735 127,735 2,885 0.0028
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.