Form 13-F position report

OLD SECOND BANCORP INC

Reported by WELLINGTON MANAGEMENT GROUP LLP

Company profile Manager portfolio Source filing
OSBC CUSIP 680277100 Manager CIK 0000902219
Latest reported change

Reported 322,537 shares, down 71,663 (18.2%) from the prior quarter.

Reported value -13.9%; share count -18.2% vs. the prior quarter.

Reduced
% of reported 13F value < 0.01% This manager · Q3 2024
Shares 322,537 Quarter-end amount reported
Reported value $5,028,352 Fair value at quarter end
Consecutive quarters held 6 Through Q3 2024

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Manager history

Quarterly position history

How this manager's reported quarter-end position changed over time.

15 quarters
Quarter Activity Shares Change % of reported 13F Reported value Filed
Q2 2026 Reduced 544,345 -313,440 (-36.5%) < 0.01% $12,694,125 2026-08-14
Q1 2026 Reduced 857,785 -111,923 (-11.5%) < 0.01% $17,292,946 2026-05-15
Q4 2025 Added 969,708 +813,600 (521.2%) < 0.01% $18,909,306 2026-02-17
Q3 2025 Unchanged 156,108 0 (0.0%) < 0.01% $2,698,327 2025-11-14
Q2 2025 Reduced 156,108 -26,729 (-14.6%) < 0.01% $2,769,356 2025-08-14
Q1 2025 Reduced 182,837 -153,800 (-45.7%) < 0.01% $3,042,408 2025-05-13
Q4 2024 Added 336,637 +14,100 (4.4%) < 0.01% $5,985,406 2025-02-12
Q3 2024 Reduced 322,537 -71,663 (-18.2%) < 0.01% $5,028,352 2024-11-14
Q2 2024 Added 394,200 +6,400 (1.7%) < 0.01% $5,838,102 2024-08-14
Q1 2024 Unchanged 387,800 0 (0.0%) < 0.01% $5,367,152 2024-05-15
Q4 2023 Added 387,800 +130,200 (50.5%) < 0.01% $5,987,632 2024-02-12
Q3 2023 Added 257,600 +36,900 (16.7%) < 0.01% $3,505,936 2023-11-14
Q2 2023 New 220,700 +220,700 (0.0%) < 0.01% $2,882,342 2023-08-14
Q4 2021 Reduced 0 -258,300 (-100.0%) 0 $0 2022-02-11
Q3 2021 Reduced 258,300 -349,100 (-57.5%) < 0.01% $3,373,000 2021-11-15
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Institutional context

Who else reported the position

183 managers reported OLD SECOND BANCORP INC for Q3 2024.

Manager Activity Shares Change % of reported 13F Reported value Tenure
BlackRock Inc New 3,680,119 +3,680,119 < 0.01% $57,373,057 1 qtr
VANGUARD GROUP INC Added 2,455,935 +114,015 < 0.01% $38,288,027 46 qtrs
DIMENSIONAL FUND ADVISORS LP Added 1,884,978 +184,168 < 0.01% $29,386,223 46 qtrs
FJ Capital Management LLC Added 1,870,988 +129,807 3.06% $29,168,703 42 qtrs
BANC FUNDS CO LLC Reduced 1,754,288 -221,400 2.97% $27,349,350 46 qtrs
STATE STREET CORPORATION Added 1,264,359 +77,143 < 0.01% $19,711,357 38 qtrs
Forum Financial Management LP Reduced 1,234,213 -1,464,782 0.32% $19,241,387 12 qtrs
JPMorgan Chase & Co Added 1,101,634 +153,187 < 0.01% $17,174,474 35 qtrs
Davis Asset Management L P Added 1,098,369 +516,101 0.69% $17,123,573 2 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 1,029,485 +22,747 < 0.01% $16,052,835 46 qtrs
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Filing details and methodology As reported
Report period
September 30, 2024
Filed
November 14, 2024
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
0
Shared
322,537
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.