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Disclosery

OSBC OLD SECOND BANCORP INC DEL

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COMMON STOCK (common), issuer CIK 357173

181 managers (188 13F filers) reported a position in OSBC shares at 2026-03-31, 37,782,584 shares in all. 19 filers opened a position and 17 filers sold out during the quarter.

Managers
181
13F filers
188
New
19
Added
60
Reduced
64
Sold out
17
Shares held by filers
37,782,584

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.4,126,244$83.2M<0.01%-29,66213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding3,372,512$68MnewTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,388,862$48.2M0.01%+127,98813F-HRTimelineGroup
Davis Asset Management, L.P.1,800,000$36.3M1.05%+54,47713F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,691,523$34.1M<0.01%+428,30013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,599,302$32.2M<0.01%+59,88313F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,590,943$32.1M0.02%+120,75813F-HRTimelineGroup
FJ Capital Management LLC1,505,102$30.3M3.42%-324,56313F-HRTimeline
Boston Partnersin group Boston Trust Walden Corp1,443,889$29.3M0.03%+626,57813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,282,011$25.9M<0.01%-83,43713F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC1,268,490$25.6M0.54%+1,44813F-HRTimeline
BANC FUNDS CO LLC1,029,143$20.7M3.86%+123,95313F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …878,670$17.7M0.02%-13,20813F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…857,785$17.3M<0.01%-111,92313F-HRTimelineGroup
Stieven Capital Advisors, L.P.773,528$15.6M3.33%-2,60013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP764,341$15.4M<0.01%-117,23513F-HRTimelineGroup
River Street Advisors LLC746,660$15.1M5.09%+380,58913F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO700,953$13.9M<0.01%-157,85313F-HR/ATimelineGroup
ALLIANCEBERNSTEIN L.P.690,845$13.5M<0.01%+4,81313F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC438,255$8.84M0.18%+10,63813F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co430,910$8.69M<0.01%-6,60013F-HRTimelineGroup
Nuveen, LLCin group TIAA419,642$8.46M<0.01%+4,17213F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC391,960$7.9M<0.01%-55,15813F-HRTimelineGroup
Gator Capital Management, LLC351,480$7.09M1.51%+13,48513F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp337,264$6.8M<0.01%-7,02813F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/331,330$6.68M<0.01%-11,24913F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding326,804$6.59M+84,963Timeline
MORGAN STANLEYin group MORGAN STANLEY278,387$5.61M<0.01%-9,73513F-HRTimelineGroup
Empowered Funds, LLC233,559$4.71M0.03%new13F-HR/ATimeline
Forum Financial Management, LPin group Forum Financial Management, LP205,661$4.15M0.06%-3,22313F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO203,088$4.09M<0.01%+86,05713F-HRTimelineGroup
GREAT LAKES ADVISORS, LLC198,004$3.99M0.03%+30,61913F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC170,651$3.44M0.01%+122,17913F-HRTimelineGroup
Elizabeth Park Capital Advisors, Ltd.166,457$3.36M2.58%+7,80013F-HRTimeline
Siena Capital Partners GP, LLC163,038$3.29M0.85%013F-HRTimeline
BLAIR WILLIAM & CO/IL162,883$3.28M0.01%+8,66413F-HRTimeline
EJF Capital LP151,170$3.05M2.15%+2,09413F-HRTimeline
JACOBS ASSET MANAGEMENT, LLC150,000$3.02M1.81%-131,47713F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…143,119$2.88M0.01%013F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …141,026$2.84M<0.01%-75,48513F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC139,054$2.8M<0.01%-15,66113F-HRTimeline
Knights of Columbus Asset Advisors LLC131,441$2.65M0.15%-1,50413F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…129,379$2.61M0.01%013F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/118,465$2.39M<0.01%-20,78713F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…111,949$2.26M<0.01%-17213F-HRTimelineGroup
Curi Capital, LLC100,505$2.03M0.04%013F-HRTimeline
MENDON CAPITAL ADVISORS CORP100,000$2.02M0.78%013F-HRTimeline
Swiss National Bank98,700$1.99M<0.01%013F-HRTimeline
Fisher Asset Management, LLC97,285$1.96M<0.01%013F-HRTimeline
Sara-Bay Financial94,063$1.9M0.57%-5,00013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC90,225$1.82M<0.01%+3,90013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources88,166$1.78M<0.01%new13F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P87,224$1.76M0.04%-23,24413F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC87,002$1.75M<0.01%-56,18613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC85,183$1.72M<0.01%+5,07813F-HRTimelineGroup
MSH Capital Advisors LLC84,826$1.71M0.36%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.81,612$1.65M<0.01%+1,06713F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC75,090$1.51M<0.01%+25,30813F-HRTimelineGroup
JCSD Capital, LLC74,100$1.49M2.33%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP67,357$1.36M<0.01%+34,75813F-HRTimelineGroup
RHUMBLINE ADVISERS66,095$1.33M<0.01%-87913F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC60,065$1.21M<0.01%-7,24813F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding54,958$1.11MnewTimeline
Y-Intercept (Hong Kong) Ltd52,576$1.06M0.02%new13F-HRTimeline
IEQ CAPITAL, LLC52,507$1.06M<0.01%-4,75813F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC51,428$1.04M<0.01%new13F-HRTimelineGroup
Quantinno Capital Management LP49,879$1.01M<0.01%+18,46113F-HRTimeline
Creative Planningin group Creative Planning46,949$946K<0.01%-26013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…46,796$943K<0.01%-37613F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\46,477$937K<0.01%+5,29013F-HRTimelineGroup
Hunter Perkins Capital Management, LLC46,184$931K0.22%+36413F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…42,784$887K<0.01%+14,42013F-HRTimeline
HighTower Advisors, LLC43,852$884K<0.01%-15013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/41,463$837K<0.01%+7,20113F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP41,087$825K<0.01%+15413F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc40,107$809K<0.01%-10,51713F-HRTimelineGroup
Black Maple Capital Management LP39,224$791K0.61%-9,77613F-HRTimeline
CITIGROUP INCin group CITIGROUP INC37,231$751K<0.01%-8,19313F-HRTimelineGroup
Rafferty Asset Management, LLC35,695$720K<0.01%-7,35413F-HRTimeline
Campbell & CO Investment Adviser LLC35,444$715K0.04%+24,44813F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)32,721$660K0.01%013F-HRTimelineGroup
HUDSON EDGE INVESTMENT PARTNERS INC.32,082$647K0.09%-26,15913F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA31,569$637K<0.01%-3,26213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC31,475$635K<0.01%-282,08513F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC28,305$571K0.03%+1313F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…28,053$566K<0.01%-29513F-HRTimelineGroup
Atom Investors LP26,934$543K0.04%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson26,232$529K<0.01%+10,59713F-HR/ATimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…23,641$477K<0.01%+23613F-HRTimelineGroup
CWM, LLCin group CWM, LLC23,515$474K<0.01%-57013F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC23,294$470K<0.01%-27,33513F-HR/ATimelineGroup
Lakewood Asset Management LLC22,651$457K0.29%+1,29113F-HRTimeline
nVerses Capital, LLC21,243$428K0.39%new13F-HRTimeline
NICOLET BANKSHARES INCin group NICOLET BANKSHARES INC20,210$413K0.02%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN19,822$400K<0.01%-36,72213F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC19,591$395K<0.01%-1,28713F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC19,283$389K<0.01%-35,85013F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP18,760$378K<0.01%-2,15113F-HRTimelineGroup
4WEALTH ADVISORS, INC.18,650$370K0.32%013F-HRTimeline
CAPTRUST FINANCIAL ADVISORS18,120$365K<0.01%-32413F-HRTimeline
Mariner, LLCin group Mariner, LLC18,067$364K<0.01%-2,93413F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD17,885$361K<0.01%+1,74413F-HRTimeline
Assenagon Asset Management S.A.17,860$360K<0.01%new13F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.17,828$359K<0.01%+3,13313F-HRTimelineGroup
Centennial Wealth Advisory LLC17,507$353K0.09%+5013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…17,258$348K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV16,739$337K<0.01%+2,29413F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …15,821$319K<0.01%+1,03913F-HRTimelineGroup
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC14,909$301K<0.01%+5013F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND14,366$290K<0.01%013F-HRTimeline
Police & Firemen's Retirement System of…14,232$287K<0.01%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…14,193$286K<0.01%+2,03213F-HRTimeline
SENTINEL TRUST CO LBA14,051$283K0.03%-4,80913F-HRTimeline
PRINCETON CAPITAL MANAGEMENT LLC13,770$278K0.08%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS13,750$277K<0.01%+1,59013F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM13,743$277K<0.01%-20213F-HRTimeline
Amundiin group Amundi13,706$276K<0.01%new13F-HRTimelineGroup
CenterBook Partners LP13,425$271K0.01%-16,46313F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…12,390$250K<0.01%-46,42613F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC11,982$242K<0.01%-5,89713F-HRTimeline
Cetera Investment Advisers11,702$236K<0.01%-4,31813F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.11,663$235K<0.01%-1413F-HRTimelineGroup
Abacus Wealth Partners, LLC11,590$234K0.02%-21513F-HRTimeline
DRW Securities, LLC11,467$231K0.01%+11813F-HRTimeline
SG Americas Securities, LLC11,371$229K<0.01%-11,15013F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.11,000$222K0.09%013F-HRTimeline
HOHIMER WEALTH MANAGEMENT, LLC10,912$220K0.03%-1,58513F-HRTimeline
KLP KAPITALFORVALTNING AS10,700$216K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd10,590$213K<0.01%new13F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC10,537$212K<0.01%-57813F-HRTimelineGroup
Brooklyn Investment Group10,216$206K0.01%new13F-HRTimeline
Savant Capital, LLCin group Savant Capital, LLC10,088$203K<0.01%new13F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.9,477$191K<0.01%-18,50713F-HRTimelineGroup
TSFG, LLC7,125$144K0.02%013F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC6,299$130K<0.01%-5,95913F-HRTimeline
FMR LLCin group FMR LLC5,842$118K<0.01%+1,40413F-HRTimelineGroup
SFAM, LLC5,827$117K0.11%013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co5,637$114K<0.01%013F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC4,776$96.3K<0.01%013F-HRTimeline
Parkside Financial Bank & Trust4,605$92.8K0.01%+2,31413F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,314$87K<0.01%013F-HRTimelineGroup
Versant Capital Management, Inc2,751$55.5K0.01%013F-HRTimeline
Parallel Advisors, LLC2,622$52.9K<0.01%+1,69013F-HR/ATimeline
QUADRANT CAPITAL GROUP LLC2,523$50.9K<0.01%013F-HR/ATimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,491$50.2K<0.01%+1,11313F-HRTimelineGroup
State of Alaska, Department of Revenue1,771$35K<0.01%013F-HRTimeline
Sterling Capital Management LLC1,671$33.7K<0.01%-23,05613F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,562$31.5K<0.01%-4213F-HR/ATimelineGroup
MAI Capital Management1,491$30.1K<0.01%+1713F-HRTimeline
Arax Advisory Partners1,420$28.6K<0.01%+11113F-HRTimeline
HARBOUR INVESTMENTS, INC.1,347$27.2K<0.01%013F-HRTimeline
Essential Partners LLC1,207$24.3K0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.1,045$21.1K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\985$19.9K<0.01%013F-HRTimelineGroup
IFP Advisors, Inc783$15.8K<0.01%013F-HRTimeline
EASTERN BANK758$15.3K<0.01%013F-HRTimeline
GAMMA Investing LLC639$12.9K<0.01%+2513F-HRTimeline
Allworth Financial LP508$10.2K<0.01%+713F-HRTimeline
Covestor Ltd486$10K0.01%+3913F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…400$8.06K<0.01%013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC369$7.44K<0.01%-28,23713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…283$5.71K<0.01%-92113F-HRTimelineGroup
Quarry LP280$5.64K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC264$5.4K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…265$5.34K<0.01%-1,13113F-HRTimelineGroup
SIGNATUREFD, LLC215$4.33K<0.01%013F-HRTimeline
DANSKE BANK A/S200$4.03K<0.01%-3,90013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.186$3.75K<0.01%+10413F-HR/ATimelineGroup
Smartleaf Asset Management LLC159$3.16K<0.01%+13813F-HRTimeline
Larson Financial Group LLC128$2.58K<0.01%013F-HRTimeline
Root Financial Partners, LLC106$2.14K<0.01%new13F-HRTimeline
True Wealth Design, LLC92$1.85K<0.01%013F-HRTimeline
Keating Financial Advisory Services, In…76$1.53K<0.01%new13F-HRTimeline
Bruce G. Allen Investments, LLC49$988<0.01%+2613F-HRTimeline
Torren Management, LLC44$888<0.01%013F-HRTimeline
FIRST HORIZON CORP43$867<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP36$705<0.01%new13F-HRTimelineGroup
Caitong International Asset Management …24$484<0.01%+1913F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC12$242<0.01%013F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/3$60<0.01%+213F-HRTimelineGroup
GHP Investment Advisors, Inc.1$21<0.01%new13F-HRTimeline

Events

  • DIMENSIONAL FUND ADVISORS LP reported 2,575,752 OSBC shares, 5.1% of the class, as of 2026-09-30, in a 13G filed 2026-10-08. 0000354204-26-001084

    Accepted , ingested