OLD SECOND BANCORP INC (OSBC) Institutional Selling Activity

Several institutional investors tracked by InsiderSet reduced exposure to OLD SECOND BANCORP INC (OSBC) during the quarter ended March 31, 2026 based on sequential SEC Form 13F filings.

The largest disclosed institutional seller of OSBC during the latest reporting period reduced its reported position by approximately $1.23M based on quarter-end filing values.

Institutional selling activity may reflect profit-taking, sector rotation, portfolio rebalancing, or changing conviction levels among major investment firms. InsiderSet tracks quarter-over-quarter holding reductions, full exits, estimated value changes, and historical selling activity using publicly disclosed SEC filing data.

The investors covered on this page collectively reduced approximately $4.51M in reported OSBC exposure during the latest filing period, although many institutional holders continue to maintain significant long-term ownership positions in OLD SECOND BANCORP INC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Renaissance Technologies LLCSell-33,60049,125$849,126
Q2 2025Renaissance Technologies LLCSell-69,20082,725$1,467,541
Q4 2024Renaissance Technologies LLCSell-48,400106,225$1,888,681
Q3 2024Renaissance Technologies LLCSell-67,900154,625$2,410,604
Q2 2024Renaissance Technologies LLCSell-52,000222,525$3,295,595
Q1 2024Renaissance Technologies LLCSell-64,000274,525$3,799
Q4 2023Renaissance Technologies LLCSell-13,900338,525$5,227
Q3 2023Renaissance Technologies LLCSell-48,200352,425$4,797
Q2 2023Renaissance Technologies LLCSell-41,000400,625$5,232
Q1 2023Renaissance Technologies LLCSell-47,800441,625$6,209
Q4 2022Renaissance Technologies LLCSell-21,800489,425$7,850
Q3 2022Renaissance Technologies LLCSell-87,800511,225$6,671
Q2 2022Renaissance Technologies LLCSell-98,700599,025$8,015
Q1 2022Renaissance Technologies LLCSell-163,900697,725$10,124
Q4 2021Renaissance Technologies LLCSell-10,750861,625$10,848
Q2 2021Renaissance Technologies LLCSell-13,300847,825$10,513
Q1 2021Renaissance Technologies LLCSell-146,413861,125$11,375
Q4 2020Renaissance Technologies LLCSell-47,6871,007,538$10,176
Q3 2020Renaissance Technologies LLCSell-137,7001,055,225$7,909
Q1 2020Renaissance Technologies LLCSell-69,1041,146,225$7,920
Q4 2018Renaissance Technologies LLCSell-118,0751,014,725$13,191
Q2 2014Renaissance Technologies LLCSell-20,467122,144$607
Q1 2014Renaissance Technologies LLCSell-15,489142,611$656
Q4 2013Renaissance Technologies LLCSell-19,700158,100$730

Frequently asked questions about OSBC activity

  • Which institutional owners are buying OSBC?

    Institutional owners buying OSBC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in OSBC activity?

    "Buy" means an investor increased their reported position in OSBC compared to the prior reporting period. This reflects growing exposure to OLD SECOND BANCORP INC (OSBC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in OSBC increasing?

    Institutional interest in OSBC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

Related Selling Insights