Old Second Bancorp, Inc.
DE ˙ DB ˙ US6802771005
18,10 € ↑0,30 (1,69%)
2026-06-03
DEL PRIS
SecurityDE:OSB / Old Second Bancorp, Inc.
InstitutionCreative Planning
Latest Disclosed Ownership46,949 shares
Latest Disclosed Value $ 946,497
Creative Planning reports 0.55% decrease in ownership of OSB / Old Second Bancorp, Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 46,949 shares of Old Second Bancorp, Inc. (DE:OSB) valued at $802,828 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 47,209 shares of Old Second Bancorp, Inc.. This represents a change in shares of -0.55% during the quarter. The current value of the position is $849,777 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F OLD SECOND BANCORP INC DEL COM 680277100 46,949 -260 -0.55 946 2.83 0.0006
2026-02-17 2025-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 47,209 8,903 23.24 921 38.97 0.0007
2025-11-14 2025-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 38,306 4,618 13.71 662 10.89 0.0005
2025-08-08 2025-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 33,688 -2,531 -6.99 598 -0.83 0.0005
2025-05-15 2025-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 36,219 715 2.01 603 -4.60 0.0006
2025-02-14 2024-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 35,504 5,397 17.93 631 34.54 0.0006
2024-10-11 2024-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 30,107 510 1.72 469 7.08 0.0005
2024-08-15 2024-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 29,597 6,639 28.92 438 38.17 0.0005
2024-05-13 2024-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 22,958 5,647 32.62 318 18.73 0.0004
2024-02-14 2023-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 17,311 1,465 9.25 267 24.19 0.0005
2023-11-16 2023-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 15,846 43 0.27 216 4.37 0.0003
2023-07-21 2023-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 15,803 -46 -0.29 206 -7.21 0.0003
2023-05-15 2023-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 15,849 507 3.30 223 -9.76 0.0003
2023-02-10 2022-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 15,342 3,787 32.77 246 62.91 0.0004
2022-11-03 2022-09-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,555 38 0.33 151 -1.95 0.0003
2022-08-15 2022-06-30 13F OLD SECOND BANCORP INC ILL COM 680277100 11,517 -1,591 -12.14 154 -18.95 0.0003
2022-05-16 2022-03-31 13F OLD SECOND BANCORP INC ILL COM 680277100 13,108 174 1.35 190 16.56 0.0003
2022-02-11 2021-12-31 13F OLD SECOND BANCORP INC ILL COM 680277100 12,934 12,934 163 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.