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IBOC in the 13F filings

International Bancshares Cor · CUSIP 459044103

Sector · BanksTheme · Commercial banks and thriftsTheme · Financial services· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
28
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed
3,548,405
combined, among listed positions
Reported value
$239m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,194,878.

Managers listing IBOC in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

28 of 28 holders

ActionFiling
Millennium Management LLC712,435$48munder 0.1%Added+158,82315 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc544,814$37munder 0.1%Added+276,16015 May 2026 (the filing on sec.gov)
AQR Capital Management LLC495,866$33munder 0.1%Trimmed-5,70015 May 2026 (the filing on sec.gov)
Invesco Ltd385,648$26munder 0.1%Added+118,13112 May 2026 (the filing on sec.gov)
AllianceBernstein LP219,967$15munder 0.1%Trimmed-54,05115 May 2026 (the filing on sec.gov)
Two Sigma Investments LP168,582$11munder 0.1%Added+162,09015 May 2026 (the filing on sec.gov)
Citadel Advisors LLC135,445$9.1munder 0.1%Added+103,84515 May 2026 (the filing on sec.gov)
Bridgewater Associates LP131,636$8.9munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Jane Street Group LLC121,076$8.1munder 0.1%Added+105,07412 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC108,350$7.3munder 0.1%Trimmed-25,49915 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC93,371$6.3munder 0.1%Added+86,68215 May 2026 (the filing on sec.gov)
Point72 Asset Management LP90,186$6.1munder 0.1%Added+54,13215 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP56,841$3.8munder 0.1%Added+36,85415 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP37,223$2.5munder 0.1%Trimmed-32,63214 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.32,000$2.2munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP30,653$2.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP29,180$2.0m0.08%Newnew13 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd26,918$1.8munder 0.1%Added+2,83218 May 2026 (the filing on sec.gov)
Tudor Investment Corp26,272$1.8munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP18,833$1.3munder 0.1%Trimmed-71,88415 May 2026 (the filing on sec.gov)
Winton Group Ltd18,486$1.2munder 0.1%Added+8412 May 2026 (the filing on sec.gov)
Marshall Wace LLP16,946$1.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Holocene Advisors LP14,588$982kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP8,158$549kunder 0.1%Added+99914 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC7,040$474kunder 0.1%Added+9527 Oct 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (7)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
2 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

012342014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IBOC by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20131$136mn.a.n.a.
Q3 20132$133mn.a.n.a.
Q4 20131$174mn.a.n.a.
Q1 20141$166mn.a.n.a.
Q2 20141$179mn.a.n.a.
Q3 20141$160mn.a.n.a.
Q4 20141$159mn.a.n.a.
Q1 20151$156mn.a.n.a.
Q2 20151$247kn.a.n.a.
Q3 20151$103mn.a.n.a.
Q4 20151$108mn.a.n.a.
Q1 20161$108mn.a.n.a.
Q2 20161$106mn.a.n.a.
Q3 20161$110mn.a.n.a.
Q4 20161$130mn.a.n.a.
Q1 20172$124mn.a.n.a.
Q2 20171$116mn.a.n.a.
Q3 20172$167mn.a.n.a.
Q4 20171$45mn.a.n.a.
Q1 20182$69mn.a.n.a.
Q2 20182$72mn.a.n.a.
Q3 20183$91mn.a.n.a.
Q4 20181$38mn.a.n.a.
Q1 20193$53mn.a.n.a.
Q2 20193$67mn.a.n.a.
Q3 20192$71mn.a.n.a.
Q4 20194$86mn.a.n.a.
Q1 20202$14mn.a.n.a.
Q3 20201$7.1mn.a.n.a.
Q1 20211$16mn.a.n.a.
Q2 20211$12mn.a.n.a.
Q3 20212$20mn.a.n.a.
Q4 20211$1.2mn.a.n.a.
Q1 20222$30mn.a.n.a.
Q2 20223$180mn.a.n.a.
Q3 20224$203mn.a.n.a.
Q4 20222$179mn.a.n.a.
Q1 20232$152mn.a.n.a.
Q2 20233$161mn.a.n.a.
Q3 20233$142mn.a.n.a.
Q4 20232$26m11
Q1 20242$29m20
Q2 20242$23m11
Q3 20242$1.4m11
Q4 20241$1.1m11
Q1 20251$1.1m01
Q2 20251$1.2m10
Q3 20252$20m11
Q4 20253$12m139
Q1 20264$13m217
Q2 20263$26m1217

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

IBOC and BAC →IBOC and JPM →IBOC and WFC →Choose a stock to compare with IBOC →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own IBOC, latest filings →Back to the 13F Explorer →