OLD SECOND BANCORP INC (OSBC) Institutional Ownership Changes & 13F Activity

OLD SECOND BANCORP INC (OSBC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Wellington Management Group Llp, Citadel Advisors Llc, State Street Corp, Two Sigma Investments, Lp, and D. E. Shaw & Co., Inc..

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Envestnet Asset Management IncBuy+5,021+25.6%24,612$573.95KQ2 2026Sep 23, 2026
State Street CorpBuy+239,900+15.0%1,839,202$42.89MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheSell-6,019-0.7%872,651$20.35MQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustSell-121-2.6%4,484$104.57KQ2 2026Sep 04, 2026
Citadel Advisors LlcBuy+243,956+406.2%304,021$7.09MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemBuy+4,447+9.5%51,243$1.19MQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+3,852+23.0%20,591$480.18KQ2 2026Aug 19, 2026
Empowered Funds, LlcBuy+15,068+6.5%248,627$5.80MQ2 2026Aug 17, 2026
Wellington Management Group LlpSell-313,440-36.5%544,345$12.69MQ2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+133,462+198.1%200,819$4.68MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+114,326—114,326$2.67MQ2 2026Aug 14, 2026
Thrivent Financial For LutheransBuy+99,159+69.3%242,278$5.65MQ2 2026Aug 14, 2026
Sei Investments CoSell-85,422-42.1%117,666$2.74MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+77,241—77,241$1.80MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-66,671-3.9%1,624,852$37.89MQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpBuy+53,769—53,769$1.25MQ2 2026Aug 14, 2026
Alliancebernstein L.P.Sell-49,000-7.1%641,845$12.94MQ2 2026Aug 14, 2026
Fj Capital Management LlcSell-44,689-3.0%1,460,413$34.06MQ2 2026Aug 14, 2026
Stieven Capital Advisors, L.P.Buy+41,800+5.4%815,328$19.01MQ2 2026Aug 14, 2026
Bank Of America CorpBuy+41,318+12.5%372,648$8.69MQ2 2026Aug 14, 2026
Aquatic Capital Management LlcBuy+37,700—37,700$879.16KQ2 2026Aug 14, 2026
Susquehanna Fundamental Investments, LlcBuy+34,268+208.6%50,693$1.18MQ2 2026Aug 14, 2026
Kennedy Capital Management LlcSell-31,507-2.5%1,236,983$28.85MQ2 2026Aug 14, 2026
Black Maple Capital Management LpSell-27,224-69.4%12,000$279.84KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+23,035+116.2%42,857$999.43KQ2 2026Aug 14, 2026
Hsbc Holdings PlcSell-18,871-22.2%66,312$1.54MQ2 2026Aug 14, 2026
Osaic Holdings, Inc.Buy+17,756+187.4%27,233$635.11KQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+17,570—17,570$409.73KQ2 2026Aug 14, 2026
Bridgeway Capital Management, LlcBuy+15,068+3.4%453,323$10.57MQ2 2026Aug 14, 2026
State Of Wisconsin Investment BoardBuy+12,643+70.7%30,528$711.91KQ2 2026Aug 14, 2026
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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.