Who Owns OLD SECOND BANCORP INC DEL (OSBC)? -- Institutional Holders (2026-06-30)

202 institutions reported holding $913.3M of OLD SECOND BANCORP INC DEL (OSBC) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($100.2M), VANGUARD GROUP INC ($79.8M), DIMENSIONAL FUND ADVISORS LP ($58.3M), STATE STREET CORP ($42.9M), Davis Asset Management, L.P. ($42.0M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1BlackRock, Inc.$100.2M4.3MAdded
2VANGUARD GROUP INC$79.8M3.4MAdded
3DIMENSIONAL FUND ADVISORS LP$58.3M2.5MAdded
4STATE STREET CORP$42.9M1.8MAdded
5Davis Asset Management, L.P.$42.0M1.8MHold
6AMERICAN CENTURY COMPANIES INC$41.6M1.8MAdded
7GOLDMAN SACHS GROUP INC$37.9M1.6MTrimmed
8FJ Capital Management LLC$34.1M1.5MTrimmed
9Boston Partners$32.9M1.4MTrimmed
10GEODE CAPITAL MANAGEMENT, LLC$31.5M1.3MAdded
11KENNEDY CAPITAL MANAGEMENT LLC$28.8M1.2MTrimmed
12BANC FUNDS CO LLC$24.1M1.0MAdded
13MANUFACTURERS LIFE INSURANCE COMPANY, THE$20.4M872,651Trimmed
14Stieven Capital Advisors, L.P.$19.0M815,328Added
15River Street Advisors LLC$18.2M779,008Added
16NORTHERN TRUST CORP$13.0M555,408Trimmed
17ALLIANCEBERNSTEIN L.P.$12.9M641,845Trimmed
18JPMORGAN CHASE & CO$12.9M555,602Trimmed
19WELLINGTON MANAGEMENT GROUP LLP$12.7M544,345Trimmed
20Nuveen, LLC$11.5M492,162Added
21BRIDGEWAY CAPITAL MANAGEMENT, LLC$10.6M453,323Added
22Sixth Street Partners Management Company, L.P.$10.1M431,304New
23CHARLES SCHWAB INVESTMENT MANAGEMENT INC$10.1M431,304Added
24AQR CAPITAL MANAGEMENT LLC$9.0M386,234Trimmed
25BANK OF AMERICA CORP /DE/$8.7M372,648Added

Source: SEC Form 13F filings · as of 2026-06-30