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Old Second Bancorp
OSBC

183 hedge funds and large institutions have $579M invested in Old Second Bancorp in 2025 Q2 according to their latest regulatory filings, with 15 funds opening new positions, 74 increasing their positions, 65 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

14% more repeat investments, than reductions

Existing positions increased: 74 | Existing positions reduced: 65

6% more capital invested

Capital invested by funds: $546M → $579M (+$32.9M)

0.44% less ownership

Funds ownership: 72.88% → 72.44% (-0.44%)

5% less funds holding

Funds holding: 192 → 183 (-9)

25% less funds holding in top 10

Funds holding in top 10: 4 → 3 (-1)

38% less first-time investments, than exits

New positions opened: 15 | Existing positions closed: 24

Holders
183
Holders Change
-9
Holders Change %
-4.69%
% of All Funds
2.41%
Holding in Top 10
3
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-25%
% of All Funds
0.04%
New
15
Increased
74
Reduced
65
Closed
24
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
KCM
Kennedy Capital Management
Missouri
+$7.85M
2
DAM
Davis Asset Management
California
+$4.64M
3
Victory Capital Management
Victory Capital Management
Texas
+$1.59M
4
American Century Companies
American Century Companies
Missouri
+$1.43M
5
JAM
Jacobs Asset Management
New York
+$964K

Top Sellers

Rank Fund Capital Flow
1
RSA
River Street Advisors
Illinois
-$4.87M
2
Millennium Management
Millennium Management
New York
-$3.67M
3
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$2.68M
4
BFC
Banc Funds Company
Illinois
-$2.07M
5
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$1.66M
Name Holding Trade Value Shares
Change 		Change in
Stake
Renaissance Technologies
51
Renaissance Technologies
New York
$1.47M -$1.13M -69,200 -46%
Swiss National Bank
52
Swiss National Bank
Switzerland
$1.45M -$24.5K -1,500 -2%
Two Sigma Advisers
53
Two Sigma Advisers
New York
$1.37M -$127K -7,800 -9%
RhumbLine Advisers
54
RhumbLine Advisers
Massachusetts
$1.26M +$45.8K +2,811 +4%
Invesco
55
Invesco
Georgia
$1.25M -$76.5K -4,690 -6%
Susquehanna International Group
56
Susquehanna International Group
Pennsylvania
$1.19M -$52.3K -3,205 -5%
Wealth Enhancement Advisory Services
57
Wealth Enhancement Advisory Services
Minnesota
$1.12M -$1.5K -92 -0.2%
HEIP
58
Hudson Edge Investment Partners
New Jersey
$1.08M +$13.7K +840 +1%
ECM
59
ExodusPoint Capital Management
New York
$1.07M +$246K +15,082 +33%
State Board of Administration of Florida Retirement System
60
State Board of Administration of Florida Retirement System
Florida
$1.04M – – –
Millennium Management
61
Millennium Management
New York
$1.02M -$3.67M -225,011 -80%
VI
62
Versor Investments
New York
$996K +$915K +56,124 New
PAM
63
Panagora Asset Management
Massachusetts
$992K +$912K +55,922 New
SEI Investments
64
SEI Investments
Pennsylvania
$952K +$499K +30,612 +133%
Citadel Advisors
65
Citadel Advisors
Florida
$918K +$472K +28,938 +127%
Royal Bank of Canada
66
Royal Bank of Canada
Ontario, Canada
$881K +$440K +26,978 +119%
BMCM
67
Black Maple Capital Management
Wisconsin
$843K +$81.5K +5,000 +12%
Legal & General Group
68
Legal & General Group
United Kingdom
$835K -$37.6K -2,308 -5%
FL
69
Fourthstone LLC
Missouri
$816K +$750K +46,000 New
HPCM
70
Hunter Perkins Capital Management
Illinois
$813K -$102K -6,280 -12%
Citigroup
71
Citigroup
New York
$796K -$242K -14,858 -25%
HighTower Advisors
72
HighTower Advisors
Illinois
$786K -$51.2K -3,143 -7%
D.E. Shaw & Co
73
D.E. Shaw & Co
New York
$778K +$385K +23,629 +117%
A
74
AlphaQuest
New York
$763K -$109K -6,684 -13%
Teacher Retirement System of Texas
75
Teacher Retirement System of Texas
Texas
$738K +$12.3K +757 +2%
1 2
3
4 5

OSBC Hedge Fund Activity: Q2 2025 in Review

183 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Old Second Bancorp (OSBC) for Q2 2025, worth a combined $579M — up 6% from $546M a quarter earlier.

Sellers outnumbered buyers: 24 funds closed out of OSBC and 15 opened new positions — a net loss of 9 holders — while 65 trimmed existing stakes and 74 added.

The largest buyer was Kennedy Capital Management, adding an estimated $7.85M. The largest seller was River Street Advisors, exiting entirely with an estimated $4.87M sold.

  • 183 institutional investors held Old Second Bancorp (OSBC) as of Q2 2025, down from 192 in Q1 2025.
  • Funds reported $579M of Old Second Bancorp stock for Q2 2025, up 6% quarter-over-quarter.
  • 15 funds opened new Old Second Bancorp positions in Q2 2025 and 24 closed out, a net change of -9 holders.
  • The largest Old Second Bancorp buyer in Q2 2025 was Kennedy Capital Management, an estimated $7.85M added.
  • The largest Old Second Bancorp seller in Q2 2025 was River Street Advisors, an estimated $4.87M sold.

Based on aggregated 13F filings for Q2 2025.