Marathon Bancorp, Inc. (MBBC) Stock

Marathon Bancorp, Inc. (MBBC) is a Financials stock trading at $15.26 (as of 2026-08-31), with a market capitalization of $45.03M and a trailing P/E of 28.5. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Marathon Bancorp, Inc. is a bank holding company for Marathon Bank, a chartered savings bank. Through Marathon Bank, it offers deposit products and lending across areas including commercial real estate, commercial and industrial, construction, and consumer loans, primarily in Marathon County, Wisconsin.

Understand Marathon Bancorp, Inc.: how it makes money

Marathon Bancorp is a community bank holding company that lends commercial real estate, residential, and consumer loans to businesses and families in Marathon County, Wisconsin, funded by customer deposits. All profit comes from the spread between loan interest it collects and deposit costs it pays, with the entire franchise concentrated in a single rural county.

Every dollar of earnings is the gap between what Marathon Bank pays depositors and what it collects from borrowers in one Wisconsin county, so local employment and housing health drive the entire profit line.

Business quality (Unprofitable): Founded in 2020 and still classified as unprofitable at the bottom line, with a 3% return on equity, the bank has not yet converted its small franchise into meaningful shareholder returns.

Bull case

  • Operating spread covers costs: The bank reported an operating margin of 20% for the quarter, indicating its loan portfolio generates enough interest income over deposit costs to comfortably cover operating expenses at this scale.
Valuation — source: SEC EDGAR (first-party)
Price$15.26
Market Cap$45.03M
P/E Ratio28.5
EV / EBITDA14.1
Price / Book0.95
Price / Sales4.05
FCF Yield2.8%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$9.55M
Net Margin0.4%
Revenue Growth (YoY)27.2%
EPS Growth (YoY)157.1%
FCF Growth (YoY)9.2%
Valuation vs Sector & Industry
Stock P/E28.5
Sector P/E (Financials)14.9
Industry P/E (Banking)12.7
vs Sector90.8%
vs Industry124.2%
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderMALTESE CAPITAL MANAGEMENT LLC ($1.96M)
Institutional Holders Tracked10
Company
SectorFinancials
IndustryBanking
CEONicholas W. Zillges
Employees35
CountryUS
IPO Date2021-04-21

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MBBC earnings history · MBBC institutional & insider holders · MBBC KPIs & operating metrics · MBBC financials · MBBC investor presentations & press releases · MBBC SEC filings · MBBC peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-08-31.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.