MBBC (Marathon Bancorp) 3-Year Book Growth Rate: -6.30% (As of Mar. 2026)

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Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

MBBC Marathon Bancorp Inc MBBC
56 GF Score
Price $15.40
GF Value $10.80
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Marathon Bancorp 3-Year Book Growth Rate?

Marathon Bancorp MBBC 56 3-Year Book Growth Rate is -6.30% as of Mar. 2026. GuruFocus rates MBBC with a GF Score™ of 56/100 and a GF Value™ of $10.80 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 1,492 Banks companies, Marathon Bancorp ranks worse than 96.38% on this metric.

Marathon Bancorp's Book Value per Share for the quarter that ended in Mar. 2026 was $16.11.

During the past 12 months, Marathon Bancorp's average Book Value per Share Growth Rate was -21.50% per year. During the past 3 years, the average Book Value per Share Growth Rate was -6.30% per year. During the past 5 years, the average Book Value per Share Growth Rate was 3.80% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average Book Value per Share growth rate.

During the past 6 years, the highest 3-Year average Book Value per Share Growth Rate of Marathon Bancorp was 15.90% per year. The lowest was -6.30% per year. And the median was 3.00% per year.


Marathon Bancorp  (NAS:MBBC) 3-Year Book Growth Rate Explanation

Book Value per Share is the ratio of equity available to common shareholders divided by the shares outstanding. Book value per share effectively indicates a firm's net asset value on a per-share basis. It can be used by investors to gauge whether a stock price is undervalued by comparing it to the firm's market value per share. Theoretically, it is what the shareholders will receive if the company is liquidated.


Marathon Bancorp 3-Year Book Growth Rate Related Terms


MBBC vs HCBC, HFBA, TMAK: 3-Year Book Growth Rate Comparison

For the Banks - Regional subindustry, Marathon Bancorp's 3-Year Book Growth Rate, along with its competitors' market caps and 3-Year Book Growth Rate data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Marathon Bancorp 3-Year Book Growth Rate vs Banks Industry

For the Banks industry and Financial Services sector, Marathon Bancorp's 3-Year Book Growth Rate distribution charts can be found below:

* The bar in red indicates where Marathon Bancorp's 3-Year Book Growth Rate falls into.


MBBC
56GF Score
Marathon Bancorp Inc MBBC
3-Year Book Growth Rate is just one metric. See GF Score™, valuation, warning signs, and more.
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Marathon Bancorp 3-Year Book Growth Rate Calculation

This is the 3-year average growth rate of Book Value per Share. The growth rate is calculated using exponential compounding based on the latest four year annual data.

Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average Book Value per Share growth rate.

What does a 3-Year Book Growth Rate of -6.30% mean?
Marathon Bancorp (MBBC) has a 3-Year Book Growth Rate of -6.30% as of Mar. 2026. 3-Year Book Growth Rate is the 3-year average growth rate of Book Value per Share. View historical data for Marathon Bancorp and its competitors. According to the industry distribution chart, Marathon Bancorp ranks #1438 out of 1492 companies in the Banks industry, placing it in the top 96.4%.
Is Marathon Bancorp's 3-Year Book Growth Rate too high?
Marathon Bancorp's current 3-Year Book Growth Rate is -6.30%. Based on the distribution chart, Marathon Bancorp ranks #1438 out of 1492 companies in the Banks industry, which is in the bottom quartile relative to peers. Overall, Marathon Bancorp has a GF Score™ of 56/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Marathon Bancorp's 3-Year Book Growth Rate compare to HCBC and HFBA?
According to the Banks industry distribution chart, Marathon Bancorp ranks #1438 out of 1492 companies for 3-Year Book Growth Rate. This places Marathon Bancorp in the lower half of its industry. The industry median 3-Year Book Growth Rate is 8.80. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year Book Growth Rate for a Banks company?
The median 3-Year Book Growth Rate among Banks companies is 8.80, based on 1,492 companies in the industry. Companies in the top quartile (top 25%) have a 3-Year Book Growth Rate significantly above this median, while those in the bottom quartile fall well below. However, 3-Year Book Growth Rate should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 3-Year Book Growth Rate mean?
A high 3-Year Book Growth Rate can signal that a stock is expensive relative to its fundamentals. 3-Year Book Growth Rate is the 3-year average growth rate of Book Value per Share. View historical data for Marathon Bancorp and its competitors. For the Banks industry, the median 3-Year Book Growth Rate is 8.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Marathon Bancorp's current 3-Year Book Growth Rate is -6.30%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Marathon Bancorp stock overvalued right now?
Based on GuruFocus' analysis, Marathon Bancorp (MBBC) is currently considered Significantly Overvalued. The stock's GF Value™ is $10.80, compared to a current price of $15.40 — trading 42.6% above its estimated fair value. The current 3-Year Book Growth Rate is -6.30%. Marathon Bancorp's overall GF Score™ is 56/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Book Growth Rate calculated?
3-Year Book Growth Rate is calculated from a company's financial statements. For Marathon Bancorp (MBBC), the current 3-Year Book Growth Rate is -6.30% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Marathon Bancorp (MBBC) Overvalued in 2026?

Based on GuruFocus' analysis, Marathon Bancorp stock appears to be overvalued. The current stock price of $15.40 is trading 42.6% above its estimated GF Value™ of $10.80. GuruFocus considers Marathon Bancorp to be Significantly Overvalued.

Key valuation signals for MBBC:

  • 3-Year Book Growth Rate: -6.30%
  • GF Value™: $10.80 vs. price of $15.40 (42.6% above fair value)
  • GF Score™: 56/100 with 5 warning signs

No single metric tells the full story. See the MBBC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Marathon Bancorp Business Description

Address 500 Scott Street, Wausau, WI, USA, 54403
Marathon Bancorp Inc is a mid-tier holding company for Marathon Bank, a Wisconsin-chartered savings bank. The group operates as a community-oriented bank offering a variety of financial products and services to meet the needs of customers. The primary deposit products are demand deposits, savings, and certificates of deposits; and prime lending products are commercial real estate, commercial and industrial, construction, one-to-four-family residential, multifamily real estate, and consumer loans. The majority of the group's revenue comes from interest income on loans and debt securities.
56GF Score

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3-Year Book Growth Rate is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$15.40
Price
$10.80
GF Value