OLD SECOND BANCORP INC (OSBC) Stock Institutional Trading Activity


OLD SECOND BANCORP INC (OSBC) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018Renaissance Technologies LLCBuy35,7001,054,400$14,656
Q4 2017Renaissance Technologies LLCBuy69,3001,018,700$13,905
Q3 2017Renaissance Technologies LLCBuy105,200949,400$12,769
Q2 2017Renaissance Technologies LLCBuy123,000844,200$9,751
Q1 2017Renaissance Technologies LLCBuy54,900721,200$8,114
Q4 2016Renaissance Technologies LLCBuy107,564666,300$7,363
Q3 2016Renaissance Technologies LLCBuy117,936558,736$4,643
Q2 2016Renaissance Technologies LLCBuy21,000440,800$3,011
Q1 2016Renaissance Technologies LLCBuy30,200419,800$3,010
Q4 2015Renaissance Technologies LLCBuy27,700389,600$3,054
Q3 2015Renaissance Technologies LLCBuy59,892361,900$2,255
Q2 2015Renaissance Technologies LLCBuy115,408302,008$1,993
Q1 2015Renaissance Technologies LLCBuy23,832186,600$1,067
Q4 2014Renaissance Technologies LLCBuy33,988162,768$874
Q3 2014Renaissance Technologies LLCBuy6,636128,780$619
Q2 2014Renaissance Technologies LLCSell-20,467122,144$607
Q1 2014Renaissance Technologies LLCSell-15,489142,611$656
Q4 2013Renaissance Technologies LLCSell-19,700158,100$730
Q3 2013Renaissance Technologies LLCBuy14,300177,800$1,012
Q2 2013Renaissance Technologies LLCBuy163,500163,500$903

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.