OLD SECOND NATIONAL BANK

AURORA, ILLINOIS · FDIC certificate 3603 · Report date 2026-06-30 (2026Q2)

Total assets$6.86B
Composite risk score (0-100, higher = riskier)56.5
Loan-to-deposit ratio94.71%
Net interest margin (FDIC)5.26%
Return on assets (FDIC)1.69%
Noncurrent loans / gross loans1.08%
Tier 1 leverage ratio (FDIC)12.05%
Total risk-based capital ratio (FDIC)14.77%

More metrics via the API

Uninsured deposit share CRE concentration (% of total risk-based capital) Construction loan concentration Unrealized securities losses / tangible equity HTM-adjusted tangible equity ratio Risk-score component percentiles 5-quarter history + raw FDIC inputs

Machine-readable JSON with every formula input: GET https://bank-risk-api.culturehub-kash.workers.dev/v1/banks/3603 — $0.01 per call in USDC on Base via x402, no account or API key. Try it free (5/day): /v1/free/banks/3603. MCP: https://bank-risk-api.culturehub-kash.workers.dev/mcp.

Source: FDIC BankFind API query for this bank and quarter. Methodology v1.0.0 (formulas). Retrieved 2026-11-13T22:56:13Z.


Data: FDIC BankFind Suite (public Call Report data). Derived metrics are informational only and are not investment, credit or legal advice. Open methodology v1.0.0. Terms & refunds · llms.txt · OpenAPI · x402