| OSBC Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the OSBC market cap history going back to 3/11/2010:
Also see: OSBC Shares Outstanding History and OSBC YTD Return |
OSBC Market Cap History — Old Second Bancorp. Capitalization Over Time
As of 5/5/2026 Old Second Bancorp. has a market cap of 1.08 billion. Investors often follow the OSBC market cap history to compare the size of the company over time.
This page shows OSBC market capitalization trends over time, with 66 market cap datapoints presented, dating back to 3/11/2010.
| OSBC Market Cap History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
OSBC Historical Market Cap: +15.90% CAGR 
Mouse over chart for data details
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| OSBC Stock Price Chart |
| About Old Second Bancorp., Inc. (Aurora, Ill.) |
| Old Second Bancorp, Inc. serves as the bank holding company for its wholly owned subsidiary bank, Old Second National Bank (the Bank). The Bank is a full-service banking business offering a range of deposit products, trust and wealth management services, lending services, and deposit services, including demand, NOW, money market, savings, time deposit and individual retirement accounts. It also offers commercial, industrial, consumer and real estate lending, including installment loans, agricultural loans, lines of credit, lease financing receivables and overdraft checking, and safe deposit operations. We show 66 historical shares outstanding datapoints in our OSBC shares outstanding history coverage, used to compute OSBC market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing OSBC market cap history over the course of time is important for investors interested in comparing OSBC's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of OSBC versus a peer is one thing; comparing OSBC market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like OSBC can fluctuate over the course of history. With this page we aim to empower investors researching OSBC by allowing them to research the OSBC market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
| OSBC Share Performance |
| Market Cap Peers |
| Old Second Bancorp. (OSBC) is categorized under the Financials sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
OSCR Market Cap History OSG Market Cap History OSPR Market Cap History OTTW Market Cap History OUNZ Market Cap History OUT Market Cap History OVBC Market Cap History OVLY Market Cap History OWL Market Cap History OXLC Market Cap History More Financials companies » |
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