Great Southern Bancorp, Inc.
US ˙ NasdaqGS ˙ US3909051076

SecurityGSBC / Great Southern Bancorp, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership11,454 shares
Latest Disclosed Value $ 723,080
Rhumbline Advisers reports 1.65% decrease in ownership of GSBC / Great Southern Bancorp, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 11,454 shares of Great Southern Bancorp, Inc. (US:GSBC) valued at $723,091 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,646 shares of Great Southern Bancorp, Inc.. This represents a change in shares of -1.65% during the quarter. The current value of the position is $839,693 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 GREAT SOUTHN BANCORP INC COM COM 390905107 11,454 -192 -1.65 723 0.98 0.0006
2026-02-13 2025-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 11,646 -1,778 -13.24 717 -12.90 0.0006
2025-11-06 2025-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 13,424 -156 -1.15 822 3.01 0.0007
2025-08-12 2025-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 13,580 253 1.90 798 8.28 0.0007
2025-05-29 2025-03-31 13F/A-1 GREAT SOUTHN BANCORP INC COM COM 390905107 13,327 -601 -4.32 738 -11.31 0.0007
2025-04-08 2025-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 13,327 -601 738 0.0007
2025-05-29 2024-12-31 13F/A-1 GREAT SOUTHN BANCORP INC COM COM 390905107 13,928 136 0.99 831 5.19 0.0007
2025-01-30 2024-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 13,928 136 831 0.0007
2024-11-12 2024-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 13,792 -461 -3.23 790 -0.25 0.0007
2024-08-01 2024-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,253 69 0.49 793 1.93 0.0007
2024-05-09 2024-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,184 -669 -4.50 778 -11.80 0.0007
2024-02-08 2023-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,853 444 3.08 882 27.68 0.0009
2023-11-09 2023-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,409 -198 -1.36 690 -6.88 0.0008
2023-08-08 2023-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,607 -520 -3.44 741 0.0008
2023-05-11 2023-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 15,127 284 1.91 1 -100.00 0.0009
2023-02-14 2022-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,843 -16 -0.11 883 4.13 0.0012
2022-11-10 2022-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,859 789 5.61 848 2.91 0.0013
2022-08-11 2022-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,070 -868 -5.81 824 -6.47 0.0012
2022-05-12 2022-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,938 -1,372 -8.41 881 -8.80 0.0011
2022-02-10 2021-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 16,310 -461 -2.75 966 5.11 0.0012
2021-11-12 2021-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 16,771 -6,500 -27.93 919 -26.71 0.0012
2021-08-05 2021-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 23,271 -2,461 -9.56 1,254 -13.99 0.0016
2021-05-06 2021-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 25,732 6,130 31.27 1,458 52.03 0.0020
2021-02-10 2020-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 19,602 2,081 11.88 959 51.02 0.0013
2020-11-12 2020-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 17,521 -2,351 -11.83 635 -20.82 0.0010
2020-08-13 2020-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 19,872 -734 -3.56 802 -3.61 0.0013
2020-05-06 2020-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 20,606 1,378 7.17 832 -31.69 0.0017
2020-02-05 2019-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 19,228 90 0.47 1,218 11.74 0.0020
2019-10-23 2019-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 19,138 1,416 7.99 1,090 2.73 0.0020
2019-08-14 2019-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 17,722 381 2.20 1,061 17.89 0.0020
2019-05-01 2019-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 17,341 40 0.23 900 13.07 0.0017
2019-01-31 2018-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 17,301 4,748 37.82 796 14.53 0.0017
2018-11-07 2018-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,553 50 0.40 695 -2.80 0.0013
2018-08-06 2018-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,503 65 0.52 715 15.14 0.0014
2018-05-02 2018-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,438 -525 -4.05 621 -7.31 0.0013
2018-02-09 2017-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,963 840 6.93 670 -0.74 0.0014
2017-11-06 2017-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,123 120 1.00 675 5.14 0.0015
2017-08-02 2017-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 12,003 -2,638 -18.02 642 -13.13 0.0015
2017-05-02 2017-03-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,641 500 3.54 739 -4.40 0.0017
2017-01-27 2016-12-31 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,141 -330 -2.28 773 31.24 0.0020
2016-11-08 2016-09-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,471 220 1.54 589 11.76 0.0016
2016-08-11 2016-06-30 13F GREAT SOUTHN BANCORP INC COM COM 390905107 14,251 -3,307 -18.83 527 -19.17 0.0016
2016-05-02 2016-03-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 17,558 1,660 10.44 652 -9.44 0.0020
2016-02-03 2015-12-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,898 -115 -0.72 720 3.90 0.0023
2015-11-04 2015-09-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 16,013 842 5.55 693 8.45 0.0024
2015-08-04 2015-06-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,171 -510 -3.25 639 3.40 0.0020
2015-05-12 2015-03-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,681 400 2.62 618 1.98 0.0018
2015-02-06 2014-12-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,281 1,225 8.72 606 42.25 0.0018
2014-11-12 2014-09-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 14,056 0 0.00 426 -5.33 0.0013
2014-08-06 2014-06-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 14,056 -180 -1.26 450 5.14 0.0013
2014-05-06 2014-03-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 14,236 -510 -3.46 428 -4.46 0.0013
2014-02-03 2013-12-31 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 14,746 -900 -5.75 448 1.36 0.0013
2013-11-05 2013-09-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,646 -99 -0.63 442 4.25 0.0014
2013-08-07 2013-06-30 13F GREAT SOUTHERN BANCORP INC COM COM 390905107 15,745 15,745 424 0.0014
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.