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Security record · archived quarter

OSBC

Old Second Bancorp, Inc. · Financial Services · Banks - Regional

24.61 -1.0% mkt cap $1.27B quote delayed (FMP) · as of Oct 11 03:53 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
13Tracked holders
0Δ holders
4.39MShares held
$78.07MReported value
+1New positions
−1Exits
Rising Conviction score 52/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth 0.0% · share flow +14.9% · net new positions 0.0% — formula

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 76 -7 26.35M $612.20M +2 −9
Q1 2026 86 +3 25.75M $518.74M +6 −3
Q4 2025 83 0 26.46M $516.04M +2 −2
Q3 2025 19 0 14.70M $254.02M +1 −1
Q2 2025 16 -2 10.11M $179.35M — −2
Q1 2025 15 +2 4.21M $70.01M +2 —
Q4 2024 13 0 4.39M $78.07M +1 −1
Q3 2024 12 +1 2.37M $37.00M +1 —
Q2 2024 11 — 2.48M $36.78M — —
Holder count
Who holds it · Q4 2024
#ManagerSharesΔ sharesValueTheir weightHeld
1 State Street Global Advisors ✦ (passive) 1.45M — $25.76M 0.0% n/c 1 SEC ↗
2 Geode Capital Management ✦ (passive) 1.03M +0.5% $18.40M 0.0% ▲ Add 3 SEC ↗ ×2
3 AQR Capital Management ✦ 404.98K +26.8% $7.20M 0.0% ▲ Add 3 SEC ↗ ×3
4 Wellington Management ✦ 336.64K +4.4% $5.99M 0.0% ▲ Add 3 SEC ↗
5 Millennium Management ✦ 308.22K +452.4% $5.48M 0.0% ▲ Add 3 SEC ↗
6 Citadel Advisors ✦ 208.73K +1365.6% $3.71M 0.0% ▲ Add 3 SEC ↗ ×2
7 Arrowstreet Capital ✦ 168.93K +31.6% $3.00M 0.0% ▲ Add 3 SEC ↗
8 Two Sigma Investments ✦ 148.34K -11.3% $2.64M 0.0% ▼ Trim 3 SEC ↗
9 Fisher Asset Management ✦ 108.02K 0.0% $1.92M 0.0% Held 3 SEC ↗
10 Renaissance Technologies ✦ 106.22K -31.3% $1.89M 0.0% ▼ Trim 3 SEC ↗
11 Adage Capital Partners ✦ 69.99K New $1.24M 0.0% New 1 SEC ↗
12 Point72 Asset Management ✦ 24.72K +33.4% $439,492 0.0% ▲ Add 2 SEC ↗
13 T. Rowe Price ✦ 22.16K +13.5% $395,000 0.0% ▲ Add 3 SEC ↗ ×2

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Exited

D. E. Shaw & Co. $547,474 was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 187 holders, 37.08M shares, $741.50M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Sep 23 COLLINS GARY S

Officer, Director · 16.00K sh · $395,080

Sep 08 MCLEAN HUGH H

Director · 25.00K sh · $640,768

Sep 04 COLLINS GARY S

Officer, Director · 5.00K sh · $128,525

Sep 02 Campbell Darin Patrick

Officer, Director · 24.00K sh · $612,792

Aug 12 Eccher James

Officer, Director · 19.31K sh · $494,701

Aug 11 Eccher James

Officer, Director · 55.69K sh · $1.42M

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Oct 08 SC 13G — DIMENSIONAL FUND ADVISORS LP

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q4 2024 · Methodology · Get this via the API