OLD SECOND BANCORP INC DEL

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OSBC·680277100·US·Common Stock·Financial Services - Banks - Regional-13D/G

OSBC (OLD SECOND BANCORP INC DEL) is held by 104 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($100.2M), DIMENSIONAL FUND ADVISORS LP ($58.3M), VANGUARD CAPITAL MANAGEMENT LLC ($50.8M). Net institutional sentiment: Mixed.

104

Holders

(10 Elite)

$670.5M

Total Value

61% (105)

Consensus

64 buying - 41 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)31

Insider (Form 4)68

Activist (13D/13G)31

Congressional (STOCK Act)80

Holder Quality

20

★★★★★

Elite

10

★★★★

Strong

28

★★★

Solid

66

★★

Below

11

★

Weak

Held by 104 funds

10 elite

Who's Trading

Source dates: Price Oct 12, 2026 · Insiders Oct 1, 2026 · Activists Oct 8, 2026 · Congress none

ActivistDimensional Fund Advisors LP5.1%Oct 8, 2026

InsiderEJEccher JamesOther 92 shSep 30, 2026

InsiderGJGartelmann Richard A JROther 35 shSep 30, 2026

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Top Holders

Top Holders (104)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	4.3M(+4.2%)	$100.2M	0.0%	+40.21%	31
DIMENSIONAL FUND ADVISORS LP	Increased	2.5M(+4.6%)	$58.3M	0.0%	+74.03%	31
VAVANGUARD CAPITAL MANAGEMENT LLC	Decreased	2.2M(-3.2%)	$50.8M	0.0%	+23.98%	0
STATE STREET CORP	Increased	1.8M(+15.0%)	$42.9M	0.0%	+61.80%	33
AMERICAN CENTURY COMPANIES INC	Increased	1.8M(+12.1%)	$41.6M	0.0%	+53.14%	33
GOLDMAN SACHS GROUP INC	Decreased	1.6M(-3.9%)	$37.9M	0.0%	+50.63%	0
Boston Partners	Decreased	1.4M(-2.0%)	$32.9M	0.0%	+26.56%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.3M(+5.3%)	$31.5M	0.0%	+74.53%	30
MANUFACTURERS LIFE INSURANCE COMPANY, THE	Decreased	872,651(-0.7%)	$20.4M	0.0%	+113.75%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	819,368(+15.0%)	$19.1M	0.0%	+21.43%	33
NORTHERN TRUST CORP	Decreased	555,408(-27.3%)	$13M	0.0%	+66.56%	0
ALLIANCEBERNSTEIN L.P.	Decreased	641,845(-7.1%)	$12.9M	0.0%	+104.56%	0
JPMORGAN CHASE & CO	Decreased	555,602(-20.7%)	$12.9M	0.0%	+59.78%	0
WELLINGTON MANAGEMENT GROUP LLP	Decreased	544,345(-36.5%)	$12.7M	0.0%	+35.13%	0
Nuveen, LLC	Increased	492,162(+17.3%)	$11.5M	0.0%	+41.80%	32
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	431,304(+0.1%)	$10.1M	0.0%	+78.89%	28
AQR CAPITAL MANAGEMENT LLC	Decreased	386,234(-1.5%)	$9M	0.0%	+66.79%	0
BANK OF AMERICA CORP /DE/	Increased	372,648(+12.5%)	$8.7M	0.0%	+46.26%	31
Bank of New York Mellon Corp	Increased	342,013(+1.4%)	$8M	0.0%	+86.03%	28
VFVANGUARD FIDUCIARY TRUST CO	Increased	341,200(+1.7%)	$8M	0.0%	+23.64%	28

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OSBCOLD SECOND BANCORP INC DEL

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer