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Boston Partners

Position in OSBC — Old Second Bancorp Inc

CIK 1386060 BOSTON, MA

Position in OSBC

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$29,108,801
+$13,171,237 QoQ
Shares Held
1,443,889
+76.7% QoQ
Ownership
2.81%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
18 quarters on record
Voting authority Sole 94.75001194690174.ToString("F0")% Shared 0.ToString("F0")% None 5.2499880530982646.ToString("F0")%

Common Shares in OSBC Over Time

Shares Held

Position Value (USD)

Position in Banks - Regional

Financial Services · as of Mar 31, 2026

Boston Partners holds $2,353,498,190 across 54 Banks - Regional names. OSBC ranks #15 (1.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in OSBC

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18 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $29,108,801 1,443,889
2025-12-31 $15,937,564 817,311
2024-03-31 $771,372 55,735
2023-12-31 $214,832 13,914
2023-09-30 $482,147 35,426
2023-06-30 $1,060,772 81,223
2023-03-31 $1,141,995 81,223
2022-12-31 $1,305,495 81,390
2022-09-30 $1,059,960 81,223
2022-06-30 $1,087,740 81,296
2022-03-31 $1,289,634 88,879
2021-12-31 $1,118,986 88,879
2021-09-30 $974,014 74,580
2021-06-30 $1,070,194 86,306
2021-03-31 $2,039,531 154,393
2020-12-31 $1,559,369 154,393
2020-06-30 $1,046,425 134,502
2020-03-31 $929,408 134,502