Bank Comparison
Security Bank vs Marathon Bank
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At Q2 2026, Marathon Bank is the larger bank, with $261.1M in total assets to Security Bank's $253.8M; Security Bank has the higher return on assets (1.73% vs 0.70%).
vs
5 · 8
winning metrics across 13 scored rows
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Capital adequacy
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| CET1 Ratio | — | — |
| Tier 1 Capital Ratio | — | — |
| Total Capital Ratio | — | — |
| Tier 1 Leverage Ratio | 11.58% | 15.34% |
| Equity / Assets | 11.63% | 14.78% |
Profitability
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| Return on Assets (ROA) | 1.73% | 0.70% |
| Return on Equity (ROE) | 15.26% | 4.64% |
| Net Interest Margin (NIM) | 3.94% | 3.56% |
| Yield on Earning Assets | 6.55% | 5.27% |
| Cost of Funds | 3.03% | 1.90% |
Asset quality
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| Texas Ratio | 8.56% | 2.69% |
| Non-Performing Loan Ratio | 1.19% | 0.03% |
| Non-Performing Asset Ratio | 1.06% | 0.42% |
| Net Charge-Off Ratio | 0.02% | -0.55% |
| ACL / Loans | 0.85% | 0.80% |
Balance sheet
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| Total Assets | $253.8M | $261.1M |
| Total Deposits | $216.4M | $197.8M |
| Total Loans | $227.3M | $219.2M |
| Total Equity | $29.5M | $38.6M |
| Net Income (quarter) | $1.1M | $443K |
Liquidity & funding
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| Loan-to-Deposit Ratio | 105.04% | 110.81% |
| Core Deposit Ratio | 71.35% | 87.85% |
| Uninsured Deposit Ratio | — | — |
Identity
| Metric | Security Bank | Marathon Bank |
|---|---|---|
| Headquarters City | New Auburn | Wausau |
| Headquarters State | WI | WI |
| Asset Tier | $100M to $1B in assets | $100M to $1B in assets |
| Regulator | FDIC | FDIC |
| Domestic Branches | 4 | 5 |
| Employees (FTE) | 24 | 31 |
| Established | August 28, 1907 | January 1, 1902 |
About this comparison
All metrics are sourced from FFIEC call report filings, the public regulatory financial reports every FDIC-insured US bank files quarterly. Both banks are reported as of June 30, 2026. The "winner" highlight is determined by the supervisory direction convention: higher is better for capital and profitability metrics; lower is better for risk metrics like Texas Ratio and uninsured-deposit ratio. Size and identity rows (assets, deposits, loans, equity, branches, employees) are shown for context and are not scored, and two values that match at the precision shown count as a tie.
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