Which funds hold MBBC?

As of 2026-Q2, 4 institutional funds reported holding MBBC (MARATHON BANCORP INC) in SEC 13F filings, with a combined reported value of $463.00K.

How many shares of MBBC do institutions own?

13F filers reported 30.30K shares of MBBC, worth $463.00K in aggregate at the end of 2026-Q2.

Is institutional ownership of MBBC rising or falling?

No prior-quarter baseline is available for a directional read.

Where does this data come from?

All figures are computed from SEC Form 13F quarterly filings, which institutional investment managers must file within 45 days of quarter end for long positions of $100,000 or more.

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MBBC — MARATHON BANCORP INC

Reported value held$1.60M

Funds holding (latest)6

SectorFinancials

Funds holding (Q2 2026)4

Institutional value$463.00K · 30.30K sh

New / Add / Cut / Exit4 / 0 / 0 / 0

Top-5 / Top-10 concentration100.0% / 100.0%

As of Q2 2026, 4 SEC-registered investment managers reported holding MBBC (MARATHON BANCORP INC) in their latest 13F filings, with a combined reported value of $463.00K across 30.30K shares. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.

Compared with the prior quarter, 4 opened new positions. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

MBBC is classified in the Financials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Q2 2026 — 4 funds

Fund	Shares	Value	Portfolio Weight	Change
Citadel Advisors history	10.98K	$167.84K	0.00%	New
Geode Capital Management history	10.87K	$166.11K	0.00%	New
BlackRock Inc history	8.36K	$127.69K	0.00%	New
UBS Group AG history	89	$1.36K	0.00%	New

Q4 2025 — 2 funds

Fund	Shares	Value	Portfolio Weight	Change
Vanguard Group history	93.03K	$1.13M	0.00%	Add
Bank of America Corp history	15	$182	0.00%	Reduce

Q3 2025 — 3 funds

Fund	Shares	Value	Portfolio Weight	Change
Vanguard Group history	35.40K	$370.61K	0.00%	Reduce
UBS Group AG history	2.25K	$23.46K	0.00%	Add
Bank of America Corp history	20	$209	0.00%	Add

Q2 2025 — 4 funds

Fund	Shares	Value	Portfolio Weight	Change
Vanguard Group history	46.47K	$462.81K	0.00%	New
Citadel Advisors history	11.75K	$116.99K	0.00%	New
UBS Group AG history	1.28K	$12.77K	0.00%	New
Bank of America Corp history	14	$139	0.00%	New

New Positions (Q2 2026)

Citadel Advisors 10.98K sh · $167.84K
Geode Capital Management 10.87K sh · $166.11K
BlackRock Inc 8.36K sh · $127.69K
UBS Group AG 89 sh · $1.36K

Fully Exited (vs previous quarter)

No tracked fund fully exited this quarter.

Fund Position History — shares by quarter (top 6 funds)

Fund	Q2 2026	Q4 2025	Q3 2025	Q2 2025
Citadel Advisors	10.98K	—	—	11.75K
Geode Capital Management	10.87K	—	—	—
BlackRock Inc	8.36K	—	—	—
UBS Group AG	89	—	2.25K	1.28K
Bank of America Corp	—	15	20	14
Vanguard Group	—	93.03K	35.40K	46.47K

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