OSBCOld Second Bancorp, Inc.

$25.25

Who owns OSBC

184 institutions reported holding OSBC for 2026Q1, together 71% of the company, more than the 183 a quarter earlier.

184

Institutions reporting a position · as of 2026Q1 · up from 183 the quarter before

Shares held by institutions
37.7M

Shares held by institutions · 71% of the company · long US equity positions only, as reported on Form 13F

Reported value
$760M

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
25%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
17
Positions exited
22
Added to
55
Reduced
58
Top 10 holdersof the company
39%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q118437.7M$760M
2025Q418337.1M$724M
2025Q319636.1M$624M
2025Q218132.6M$578M
2025Q119232.8M$546M
2024Q417832.2M$573M
2024Q317331.7M$494M
2024Q215230.9M$457M
2024Q115130.0M$415M
2023Q415930.4M$470M
2023Q314429.9M$406M
2023Q213329.5M$385M
2023Q115529.5M$415M
2022Q414529.4M$471M
2022Q313329.5M$385M
2022Q213229.5M$395M
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.4.1M7.7%$83M
VANGUARD GROUP INC3.4M6.3%$68M
DIMENSIONAL FUND ADVISORS LP2.4M4.5%$48M
Davis Asset Management, L.P.1.8M3.4%$36M
GOLDMAN SACHS GROUP INC1.7M3.2%$34M
STATE STREET CORP1.6M3.0%$32M
AMERICAN CENTURY COMPANIES INC1.6M3.0%$32M
FJ Capital Management LLC1.5M2.8%$30M
Robeco Investment Management, Inc.1.4M2.7%$29M
GEODE CAPITAL MANAGEMENT LLC1.3M2.4%$26M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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