This comparison uses public regulatory filings and TFS methodology. It evaluates financial condition—not checking rates, account fees, service quality, or which institution is universally “best.”
Bank
Sioux Falls, SD
Health score
66.9
Total assets
$349.2M
Bank
Tyndall, SD
Health score
65.3
Total assets
$304.1M
Answer first
Frontier Bank leads on financial health and lending quality and growth; Security Bank Midwest leads on capitalization and profitability. Those category leads describe current regulatory metrics only and do not establish a universal product or service winner.
Capital and asset-quality definitions are directly comparable for this pair.
Category leaders
Financial health
Frontier Bank
Higher TFS health score
Capitalization
Security Bank Midwest
Higher comparable capital ratio
Profitability
Security Bank Midwest
Higher return on assets
Lending quality
Frontier Bank
Lower problem-loan measure
Growth
Frontier Bank
Higher year-over-year asset growth
Same-source detail
Winner markers appear only where the metric definitions are comparable and both values are available.
| Metric | Frontier Bank | Security Bank Midwest |
|---|---|---|
| TFS health score | 66.9/100Leads | 65.3/100 |
| Total assets | $349.2M | $304.1M |
| Total deposits / shares | $323.8M | $238.8M |
| Tier 1 capital ratio | 8.76% | 10.52%Leads |
| Return on assets | 0.47% | 0.73%Leads |
| Return on equity | 7.06% | 8.18% |
Frontier Bank
5 branches
Security Bank Midwest
6 branches
Both institutions report branches in 1 state: SD.
Frontier Bank
Unavailable
Security Bank Midwest
Unavailable
Counts use an explicitly reviewed CFPB-company-to-regulatory-ID mapping and the same complete 12-month window. Parent-company attribution can include complaints involving affiliates. Lower complaint volume is context—not proof of better service or less consumer harm.
Frontier Bank
0 in TFS registry
Security Bank Midwest
0 in TFS registry
Institution-level actions come from TFS's exact regulatory-ID registry and are shown as factual context only. They do not affect category winners or the TFS Financial Health Grade. A zero means no action is currently published in this curated registry—not proof that none exists.
Quarterly history
| Quarter | Frontier Bank score | Frontier Bank ROA | Security Bank Midwest score | Security Bank Midwest ROA |
|---|---|---|---|---|
| 2024-Q3 | — | 0.41% | — | 1.10% |
| 2024-Q4 | — | 0.45% | — | 1.07% |
| 2025-Q1 | — | 0.43% | — | 0.84% |
| 2025-Q2 | — | 0.42% | — | 0.77% |
| 2025-Q3 | — | 0.46% | — | 0.78% |
| 2025-Q4 | — | 0.52% | — | 0.75% |
| 2026-Q1 | 66.9/100 | 0.35% |
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Coverage boundaries
Related comparisons
Financial data comes from FDIC BankFind Suite or NCUA Call Reports as labeled. TFS Health Grades are an editorial assessment, not an official government rating or financial advice. Arbitrary comparison pairs are available dynamically but remain noindex unless curated for data completeness and user value.
| Non-performing loans | 0.00%Leads | 0.40% |
| Net charge-offs | 0.01% | 0.00%Leads |
| Efficiency ratio | 78.77% | 76.35%Leads |
| Loan-to-deposit ratio | 73.71% | 89.11% |
| Asset growth (YoY) | 0.69%Leads | -7.20% |
| Deposit / share growth (YoY) | 3.65%Leads | -5.89% |
| Branches | 5 | 6 |
| Published CFPB complaints per $1B deposits (12 months)verified mappings only | — | — |
| 69.1/100 |
| 0.93% |
| 2026-Q2 | 66.9/100 | 0.47% | 65.3/100 | 0.73% |