Old Second Bancorp Inc (OSBC)
STATE COMMERCIAL BANKS
Old Second Bancorp Inc (OSBC) is listed on Nasdaq, where it has traded since November 16, 1993.
- Listed On
- Nasdaq
- Listed Since
- November 16, 1993
- Employees
- 1,062
- Market Cap
- $1.3B
About Old Second Bancorp Inc
Old Second Bancorp Inc is a bank holding company. It provides consumer and commercial banking products such as demand, money market, savings, time deposit, and individual retirement as well as commercial, industrial, consumer, and real estate lending, including installment loans, student loans, agricultural loans, lines of credit and overdraft checking, safe deposit operations, trust services, wealth management services, and additional services tailored to the needs of individual customers, corporates, small-medium enterprises. The company has one operating segment, which is community banking. The company's revenue consists of interest, commission, payments, and other income.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 177 institutions reported holding OSBC, with 38.8 million shares worth $902.2 million in aggregate. The largest reported holder was BlackRock, with 4.3 million shares worth $100.2 million. Of the 5 largest holders listed below, 4 added shares and 1 held its position unchanged during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| BlackRock | 4,298,683 | $100M | Added 4.18% |
| Vanguard | 3,421,510 | $80M | Added 1.45% |
| Dimensional Fund Advisors | 2,498,671 | $58M | Added 4.6% |
| State Street | 1,839,202 | $43M | Added 15% |
| Davis Asset Management, | 1,800,000 | $42M | Unchanged |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is OSBC?
Old Second Bancorp Inc (OSBC) is listed on Nasdaq, where it has traded since November 16, 1993.
Who are the largest institutional holders of OSBC?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of OSBC were BlackRock, Vanguard and Dimensional Fund Advisors.
How many institutions own OSBC?
177 institutions reported a position in OSBC for the quarter ended June 30, 2026, worth $902.2 million in total.
Did institutions buy or sell OSBC last quarter?
Of the 5 largest reported holders, 4 added shares and 1 held its position unchanged during the quarter. Every reported holder and its change is on the SentiSense ownership page for OSBC.
Every reported institutional holder, plus insider and congressional trades in OSBC, on SentiSense.