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.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy37,20086,325$1,683,338
Q3 2025Renaissance Technologies LLCSell-33,60049,125$849,126
Q2 2025Renaissance Technologies LLCSell-69,20082,725$1,467,541
Q1 2025Renaissance Technologies LLCBuy45,700151,925$2,528,032
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
Q3 2021Renaissance Technologies LLCBuy24,550872,375$11,393
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
Q2 2020Renaissance Technologies LLCBuy46,7001,192,925$9,281
Q1 2020Renaissance Technologies LLCSell-69,1041,146,225$7,920
Q4 2019Renaissance Technologies LLCBuy35,9041,215,329$16,370
Q3 2019Renaissance Technologies LLCBuy59,0001,179,425$14,413
Q2 2019Renaissance Technologies LLCBuy18,5001,120,425$14,308
Q1 2019Renaissance Technologies LLCBuy87,2001,101,925$13,873
Q4 2018Renaissance Technologies LLCSell-118,0751,014,725$13,191
Q3 2018Renaissance Technologies LLCBuy78,4001,132,800$17,502

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.