Old Second Bancorp (OSBC) Institutional Ownership

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Current Institutional Ownership Percentage: 67.76%
Number of Institutional Buyers (last 12 months): 130
Total Institutional Inflows (last 12 months): $154.76M

Number of Institutional Sellers (last 12 months): 81
Total Institutional Outflows (last 12 months): $51.82M

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OSBC Institutional Buying and Selling by Quarter

Old Second Bancorp Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
6/3/2026	Parallel Advisors LLC	2,622	$53K	0.0%	+181.3%	0.005%
5/19/2026	Bank of America Corp DE	331,330	$6.68M	0.0%	-3.3%	0.644%
5/19/2026	Janus Henderson Group PLC	26,232	$529K	0.0%	+67.8%	0.051%
5/18/2026	Amundi	13,706	$276K	0.0%	N/A	0.027%
5/18/2026	Royal Bank of Canada	31,569	$637K	0.0%	-9.4%	0.061%
5/18/2026	Empowered Funds LLC	233,559	$4.71M	0.0%	+6.1%	0.454%
5/16/2026	The Manufacturers Life Insurance Company	878,670	$17.71M	0.0%	-1.5%	1.708%
5/16/2026	Quantinno Capital Management LP	49,879	$1.01M	0.0%	+58.8%	0.097%
5/15/2026	Jacobs Asset Management LLC	150,000	$3.02M	1.8%	-46.7%	0.292%
5/14/2026	Renaissance Technologies LLC	90,225	$1.82M	0.0%	+4.5%	0.175%
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5/14/2026	Arrowstreet Capital Limited Partnership	141,026	$2.84M	0.0%	-34.9%	0.274%
5/14/2026	Sei Investments Co.	203,088	$4.09M	0.0%	+73.5%	0.395%
5/13/2026	Cetera Investment Advisers	11,702	$236K	0.0%	-27.0%	0.023%
5/13/2026	First Trust Advisors LP	18,760	$378K	0.0%	-10.3%	0.036%
5/7/2026	Dimensional Fund Advisors LP	2,388,862	$48.16M	0.0%	+5.7%	4.614%
5/7/2026	Parallel Advisors LLC	2,622	$53K	0.0%	+181.3%	0.005%
5/7/2026	Sentinel Trust Co. LBA	14,051	$283K	0.0%	-25.5%	0.027%
5/6/2026	Bartlett & CO. Wealth Management LLC	6,299	$130K	0.0%	-48.6%	0.012%
5/5/2026	Bank of New York Mellon Corp	337,264	$6.80M	0.0%	-2.0%	0.651%
5/4/2026	Principal Financial Group Inc.	75,090	$1.51M	0.0%	+50.8%	0.145%
4/30/2026	Hsbc Holdings PLC	85,183	$1.72M	0.0%	+6.3%	0.165%
4/28/2026	Hudson Edge Investment Partners Inc.	32,082	$647K	0.1%	-44.9%	0.062%
4/27/2026	Y Intercept Hong Kong Ltd	52,576	$1.06M	0.0%	N/A	0.102%
4/23/2026	Forum Financial Management LP	205,661	$4.15M	0.1%	-1.5%	0.397%
4/22/2026	Sterling Capital Management LLC	1,671	$34K	0.0%	-93.2%	0.003%
4/22/2026	River Street Advisors LLC	746,660	$15.05M	5.1%	+104.0%	1.442%
4/20/2026	Assenagon Asset Management S.A.	17,860	$360K	0.0%	N/A	0.034%
4/17/2026	Sara Bay Financial	94,063	$1.90M	0.6%	-5.0%	0.182%
4/16/2026	SG Americas Securities LLC	11,371	$229K	0.0%	-49.5%	0.022%
3/17/2026	Rockefeller Capital Management L.P.	1,396	$27K	0.0%	N/A	0.003%
3/9/2026	EMC Capital Management	7,170	$140K	0.1%	-15.0%	0.014%
3/6/2026	Hsbc Holdings PLC	80,105	$1.56M	0.0%	+135.2%	0.152%
2/19/2026	Invesco Ltd.	80,545	$1.57M	0.0%	+4.6%	0.153%
2/18/2026	Mercer Global Advisors Inc. ADV	14,445	$282K	0.0%	+11.8%	0.027%
2/18/2026	Empowered Funds LLC	220,121	$4.29M	0.0%	+10.9%	0.418%
2/18/2026	Wellington Management Group LLP	969,708	$18.91M	0.0%	+521.2%	1.841%
2/18/2026	Millennium Management LLC	313,560	$6.11M	0.0%	N/A	0.595%
2/18/2026	Bridgeway Capital Management LLC	427,617	$8.34M	0.2%	-15.3%	0.812%
2/17/2026	AQR Capital Management LLC	447,118	$8.72M	0.0%	-13.7%	0.849%
2/17/2026	Price T Rowe Associates Inc. MD	34,262	$669K	0.0%	+6.3%	0.065%
Goldman Sachs just told you what to buy (most people missed it) (Ad) Goldman Sachs just revealed that 40% of AI data centers will be crippled by electricity shortages by 2027 - not chips, not funding, but power. Demand is growing 15% per year and the grid can't keep up. One small company makes the exact equipment these data centers need. They're sitting on $1.5 billion in orders, their hardware is already inside Musk's Colossus, and the stock still trades like a name nobody's heard of. Analyst Dylan Jovine is releasing the ticker for free. See the stock positioned to solve AI's biggest power crisis
2/17/2026	Osaic Holdings Inc.	27,984	$546K	0.0%	+6.9%	0.053%
2/17/2026	Adage Capital Partners GP L.L.C.	243,192	$4.74M	0.0%	N/A	0.462%
2/17/2026	California State Teachers Retirement System	47,172	$920K	0.0%	+19.7%	0.090%
2/17/2026	Russell Investments Group Ltd.	112,121	$2.19M	0.0%	+0.8%	0.213%
2/17/2026	State of Wisconsin Investment Board	16,141	$315K	0.0%	N/A	0.031%
2/17/2026	Captrust Financial Advisors	18,444	$360K	0.0%	N/A	0.035%
2/17/2026	Royal Bank of Canada	34,831	$679K	0.0%	+7.5%	0.066%
2/16/2026	Squarepoint Ops LLC	48,472	$945K	0.0%	+368.1%	0.092%
2/16/2026	Verition Fund Management LLC	24,375	$475K	0.0%	+16.2%	0.046%
2/16/2026	Mariner LLC	21,001	$410K	0.0%	+28.2%	0.040%
2/16/2026	FJ Capital Management LLC	1,829,665	$35.68M	4.0%	-4.7%	3.474%
2/16/2026	Jacobs Asset Management LLC	281,477	$5.49M	3.1%	-41.1%	0.534%
2/16/2026	Kennedy Capital Management LLC	1,267,042	$24.71M	0.5%	+15.9%	2.406%
2/16/2026	Arax Advisory Partners	1,309	$26K	0.0%	-94.3%	0.002%
2/16/2026	Barclays PLC	143,188	$2.79M	0.0%	+22.8%	0.272%
2/13/2026	Parkside Financial Bank & Trust	2,291	$45K	0.0%	N/A	0.004%
2/13/2026	The Manufacturers Life Insurance Company	891,878	$17.39M	0.0%	-2.7%	1.693%
2/13/2026	Rafferty Asset Management LLC	43,049	$839K	0.0%	+17.1%	0.082%
2/13/2026	First Trust Advisors LP	20,911	$408K	0.0%	-28.3%	0.040%
2/13/2026	Police & Firemen s Retirement System of New Jersey	14,232	$278K	0.0%	+18.7%	0.027%
2/13/2026	State Street Corp	1,539,419	$30.02M	0.0%	+12.6%	2.923%
2/13/2026	Ieq Capital LLC	57,265	$1.12M	0.0%	+7.5%	0.109%
2/13/2026	Boston Partners	817,311	$15.99M	0.0%	N/A	1.552%
2/13/2026	Martingale Asset Management L P	110,468	$2.15M	0.1%	-18.3%	0.210%
2/13/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	64,739	$1.26M	0.0%	+24.4%	0.123%
2/13/2026	Wells Fargo & Company MN	56,544	$1.10M	0.0%	+46.2%	0.107%
2/13/2026	Davis Asset Management L.P.	1,745,523	$34.04M	1.2%	+16.4%	3.314%
2/13/2026	Gator Capital Management LLC	337,995	$6.59M	1.3%	+0.8%	0.642%
2/13/2026	Quadrant Capital Group LLC	2,523	$49K	0.0%	+32.7%	0.005%
2/12/2026	DRW Securities LLC	11,349	$221K	0.0%	N/A	0.022%
2/12/2026	MetLife Investment Management LLC	28,348	$553K	0.0%	-4.1%	0.054%
2/12/2026	Banc Funds Co. LLC	905,190	$17.65M	3.5%	-10.1%	1.719%
2/12/2026	Renaissance Technologies LLC	86,325	$1.68M	0.0%	+75.7%	0.164%
2/12/2026	Dimensional Fund Advisors LP	2,260,874	$44.09M	0.0%	+2.5%	4.293%
2/12/2026	Sfam LLC	5,827	$114K	0.1%	N/A	0.011%
2/12/2026	New York State Common Retirement Fund	14,366	$280K	0.0%	+25.3%	0.027%
2/12/2026	Campbell & CO Investment Adviser LLC	10,996	$214K	0.0%	N/A	0.021%
2/12/2026	Bank of Montreal Can	139,252	$2.72M	0.0%	-22.4%	0.264%
2/12/2026	Swiss National Bank	98,700	$1.93M	0.0%	+20.8%	0.187%
2/12/2026	Nuveen LLC	415,470	$8.10M	0.0%	+0.2%	0.789%
2/11/2026	Empowered Funds LLC	220,121	$4.29M	0.0%	+10.9%	0.418%
2/11/2026	Deutsche Bank AG	41,187	$803K	0.0%	+8.9%	0.078%
2/11/2026	Cerity Partners LLC	11,115	$217K	0.0%	N/A	0.021%
2/11/2026	Brandywine Global Investment Management LLC	90,620	$1.77M	0.0%	-3.6%	0.172%
2/11/2026	CenterBook Partners LP	29,888	$583K	0.0%	-34.7%	0.057%
2/11/2026	JPMorgan Chase & Co.	858,806	$16.75M	0.0%	+10.1%	1.631%
2/11/2026	Los Angeles Capital Management LLC	28,606	$519K	0.0%	+1.8%	0.054%
2/10/2026	Goldman Sachs Group Inc.	1,263,223	$24.63M	0.0%	-19.0%	2.398%
2/10/2026	Intech Investment Management LLC	17,879	$349K	0.0%	-10.8%	0.034%
2/9/2026	Geode Capital Management LLC	1,365,448	$26.63M	0.0%	+0.2%	2.592%
Goldman Sachs just told you what to buy (most people missed it) (Ad) Goldman Sachs just revealed that 40% of AI data centers will be crippled by electricity shortages by 2027 - not chips, not funding, but power. Demand is growing 15% per year and the grid can't keep up. One small company makes the exact equipment these data centers need. They're sitting on $1.5 billion in orders, their hardware is already inside Musk's Colossus, and the stock still trades like a name nobody's heard of. Analyst Dylan Jovine is releasing the ticker for free. See the stock positioned to solve AI's biggest power crisis
2/9/2026	Knights of Columbus Asset Advisors LLC	132,945	$2.59M	0.1%	-2.6%	0.252%
2/9/2026	Harbour Investments Inc.	1,347	$26K	0.0%	N/A	0.003%
2/9/2026	Fisher Asset Management LLC	97,285	$1.90M	0.0%	-5.1%	0.185%
2/9/2026	Clearstead Advisors LLC	2,431	$47K	0.0%	+793.8%	0.005%
2/6/2026	Stieven Capital Advisors L.P.	776,128	$15.13M	2.8%	-0.2%	1.474%
2/6/2026	HighTower Advisors LLC	44,002	$858K	0.0%	-1.6%	0.084%
2/5/2026	Abacus Wealth Partners LLC	11,805	$230K	0.0%	N/A	0.022%
2/5/2026	JCSD Capital LLC	74,100	$1.45M	1.7%	-28.3%	0.141%
2/5/2026	Thrivent Financial for Lutherans	143,119	$2.79M	0.0%	-17.6%	0.272%
2/4/2026	HighPoint Advisor Group LLC	17,956	$350K	0.0%	+65.1%	0.034%

OSBC Institutional Ownership - Frequently Asked Questions

During the previous two years, 206 institutional investors and hedge funds held shares of Old Second Bancorp. The most heavily invested institutionals were Vanguard Group Inc. ($63.93M), Dimensional Fund Advisors LP ($48.16M), FJ Capital Management LLC ($35.68M), Davis Asset Management L.P. ($34.04M), State Street Corp ($30.02M), Geode Capital Management LLC ($26.63M), and Kennedy Capital Management LLC ($24.71M).Learn more on Old Second Bancorp's institutional investors.

67.76% of Old Second Bancorp's stock is owned by institutional investors. Learn more on OSBC's institutional investor holdings.

Of the 179 institutional investors that purchased Old Second Bancorp's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Davis Asset Management L.P. ($1.11M), River Street Advisors LLC ($1.06M), Wellington Management Group LLP ($841.80K), Boston Partners ($817.31K), Vanguard Group Inc. ($817.02K), Kennedy Capital Management LLC ($751.35K), and Goldman Sachs Group Inc. ($630.27K).

Institutional investors have bought a total of 8,345,840 shares in the last 24 months. This purchase volume represents approximately $154.76M in transactions.

Of the 81 institutional investors that sold Old Second Bancorp's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Jacobs Asset Management LLC ($328.22K), Goldman Sachs Group Inc. ($295.48K), Banc Funds Co. LLC ($252.19K), JPMorgan Chase & Co. ($241.76K), Assenagon Asset Management S.A. ($164.30K), AQR Capital Management LLC ($91.00K), and FJ Capital Management LLC ($90.27K).

Institutional investors have sold a total of 2,783,209 shares in the last 24 months. This volume of shares sold represents approximately $51.82M in transactions.

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This page (NASDAQ:OSBC) was last updated on 6/9/2026 by MarketBeat.com Staff.

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Old Second Bancorp (OSBC) Institutional Ownership

OSBC Institutional Buying and Selling by Quarter

Old Second Bancorp Major Shareholders & Ownership History

OSBC Institutional Ownership - Frequently Asked Questions

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Old Second Bancorp (OSBC) Institutional Ownership

Institutional Ownership Changes (13F Filings) for Old Second Bancorp (NASDAQ:OSBC)

OSBC Institutional Buying and Selling by Quarter

Old Second Bancorp Major Shareholders & Ownership History

OSBC Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of OSBC shares?

What percentage of Old Second Bancorp's stock is owned by institutional investors?

Which institutional investors have been buying Old Second Bancorp's stock?

How much institutional buying is happening at Old Second Bancorp?

Which of Old Second Bancorp's major shareholders have been selling company stock?

How much institutional selling is happening at Old Second Bancorp?

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