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Old Second Bancorp (OSBC): What Does the Company Do? — Stock Outlook, Earnings, Market Cap, Related Stocks, and Headquarters Overview

Updated June 10, 2026 · First published April 13, 2026

Old Second Bancorp (OSBC) is an Illinois-based community bank founded in 1871 that operates deposit, lending, and wealth management businesses in the Chicago metropolitan area. It is characterized by a stable net interest margin and community-focused operations, making it a stock worth examining alongside its price, earnings, market cap, and related stocks.

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🏢 What Kind of Company Is Old Second Bancorp?

Old Second Bancorp OSBC is a long-established community bank holding company founded in 1871 in Illinois, USA. It is anchored in the Chicago metropolitan area as its core operating base and carries forward a long-standing tradition of community banking.

Its core business combines deposit gathering from individuals and businesses with commercial and consumer lending, the classic spread-based banking model. It adds mortgage and wealth management services on top to deliver a comprehensive, community-focused suite of financial services.

💰 How Does Old Second Bancorp Make Money?

Business SegmentRevenue ShareDescription
Commercial & Consumer LendingCoreInterest income from corporate and personal loans is the primary revenue source
Deposits & Net Interest MarginKey Growth PillarNet interest income structure built on a regional deposit base
Wealth Management & FeesDiversification PillarNon-interest fee income from wealth management and mortgage operations

Old Second Bancorp's earnings are centered on net interest income generated from loan interest. A net interest margin built on the Chicago-area deposit base forms the foundation of its results, while non-interest fees from wealth management and mortgage banking supplement earnings. The bank exhibits a typical community bank earnings structure in which net interest margin moves with the rate environment and loan growth, while diversification into non-interest income helps dampen volatility.

📐 Old Second Bancorp Market Cap and Company Scale

Its market cap stands at $1.3B, with an employee headcount of 1,062 people.

Old Second Bancorp falls into the small-to-mid-cap community bank group by market cap. It competes against similarly sized community banks on the strength of its Chicago-metro branch network, while maintaining a conservative operating philosophy that emphasizes a stable deposit base and capital returns to manage shareholder value.

📈 Old Second Bancorp Outlook and Price Action

1-Year Price Performance
Analyst Consensus
1.5
Sell Hold Strong Buy
Target Price $28 +7.5% Current $26
52-Week Price Range
$26
Low $17 High $26
vs. low +53.63% vs. high -1.82%

In the near term, the direction of interest rates and changes in net interest margin are the key earnings variables. The regional economy and the health of commercial real estate lending are also major points to monitor. Over the medium to long term, share gains within the Chicago metro area, diversification into non-interest income such as wealth management, and investments in digital banking can serve as growth drivers. That said, potential volatility remains from higher credit costs tied to a regional economic slowdown or deterioration in commercial real estate loan quality, and competition for deposits among community banks is another variable that can pressure margins.

  • Net interest margin management and loan growth
  • Diversification of non-interest fee income

⚔️ Old Second Bancorp Core Strengths and Risks

Old Second Bancorp's long-standing regional presence and stable deposit base are strengths, but its reliance on a single geographic market and interest rate sensitivity act as risks.

💪 Core Strengths

Long-Standing Regional Presence
The trust and customer relationships built in the Chicago metro area since its founding in 1871 form a competitive edge.
Stable Deposit Structure
A community-anchored deposit base supports low-cost funding and the net interest margin.
Capital Return Policy
Maintains a conservative capital management approach with a focus on shareholder returns.

⚠️ Core Risks

Single-Region Concentration
Operations are concentrated in the Chicago metro area, exposing the bank to regional economic swings.
Interest Rate Sensitivity
Net interest margin can fluctuate with the interest rate cycle.
Credit Costs
Deterioration in loan quality, including commercial real estate, could lift provisioning expenses.

🔄 Old Second Bancorp Competitors and Related (Beneficiary) Stocks

Direct competitors include similarly sized community banks such Burke & Herbert's BHRB, Community Trust's CTBI, Tompkins Financial's TMP, and Northeast Bancorp's NBN. Related names grouped with Old Second include other large Midwest community banks such as Wintrust Financial's WTFC and Fulton Financial's FULT, which share the same community bank sector trends.

Competitors
TickerCompanyPriceChangeMarket CapP/EPBRROEDividend Yield
BHRBBHRBBurke & Herbert Financial Services Corp$71.53+0.0%$1.4B11.51.29.79%3.09%
CTBICTBICommunity Trust Bancorp Inc$77.67+0.4%$1.4B13.01.612.72%2.88%
TMPTMPTompkins Financial Corp$98.83+0.5%$1.4B8.11.520.36%2.78%
NBNNBNNortheast Bank$132.64+1.1%$1.1B10.41.919.57%0.03%
Related stocks (beneficiaries)
TickerCompanyPriceChangeMarket CapP/EPBRROEDividend Yield
WTFCWTFCWintrust Financial Corp$152.16+0.9%$10.3B12.21.412.21%1.45%
FULTFULTFulton Financial Corp$23.61+0.0%$4.5B11.31.311.1%3.21%

✅ Investor Checkpoints for Old Second Bancorp

Old Second Bancorp OSBC is a long-established Chicago-area community bank running a community banking model that pairs traditional spread-based lending with non-interest income diversification. From an investment perspective, several key checkpoints are worth reviewing.

CheckpointWhat to VerifyCurrent Status
📈 Loan GrowthTrends in commercial and consumer loan growth and asset qualityTracking alongside the regional economy
💵 ProfitabilityReview return on equity and net interest margin trendsMaintained at stable levels
🌍 Rate EnvironmentNet interest margin shifts tied to the interest rate cycleCycle-sensitive phase
💰 Capital ReturnsSustainability of dividends and capital management policyMaintained conservatively

Key risks include exposure to the regional economy through geographic concentration, net interest margin pressure from rate swings, and the health of the commercial real estate loan book. In a macro slowdown, rising credit costs could weigh on earnings.

Old Second Bancorp is a community bank with a long-standing regional presence and a stable deposit base, and an approach that weighs both rates and regional economic trends is recommended. Over the long term, scaled-in buying and portfolio diversification are advisable.

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