Greene County Bancorp, Inc.
US ˙ NasdaqCM ˙ US3943571071

SecurityGCBC / Greene County Bancorp, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership910 shares
Latest Disclosed Value $ 20,393
Citigroup Inc reports 35.22% increase in ownership of GCBC / Greene County Bancorp, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 910 shares of Greene County Bancorp, Inc. (US:GCBC) valued at $20,393 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 673 shares of Greene County Bancorp, Inc.. This represents a change in shares of 35.22% during the quarter. The current value of the position is $24,561 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)
2026-05-11 2026-03-31 13F GREENE CNTY BANCORP COM 394357107 910 237 35.22 20 42.86 0.0000
2026-02-13 2025-12-31 13F GREENE CNTY BANCORP COM 394357107 673 -427 -38.82 15 -41.67 0.0000
2025-11-10 2025-09-30 13F GREENE CNTY BANCORP COM 394357107 1,100 -2,167 -66.33 25 -66.67 0.0000
2025-08-11 2025-06-30 13F GREENE CNTY BANCORP COM 394357107 3,267 -2,196 -40.20 73 -45.04 0.0000
2025-05-12 2025-03-31 13F GREENE CNTY BANCORP COM 394357107 5,463 -596 -9.84 132 -21.56 0.0001
2025-02-12 2024-12-31 13F GREENE CNTY BANCORP COM 394357107 6,059 945 18.48 168 5.70 0.0001
2024-11-12 2024-09-30 13F GREENE CNTY BANCORP COM 394357107 5,114 3,524 221.64 158 198.11 0.0001
2024-08-12 2024-06-30 13F GREENE CNTY BANCORP COM 394357107 1,590 280 21.37 54 43.24 0.0000
2024-05-10 2024-03-31 13F GREENE CNTY BANCORP COM 394357107 1,310 225 20.74 38 23.33 0.0000
2024-02-09 2023-12-31 13F GREENE CNTY BANCORP COM 394357107 1,085 973 868.75 31 1,400.00 0.0000
2023-12-06 2023-09-30 13F/A-1 GREENE CNTY BANCORP COM 394357107 112 -2,018 -94.74 3 -96.83 0.0000
2023-11-09 2023-09-30 13F GREENE CNTY BANCORP COM 394357107 112 -2,018 3 0.0000
2023-08-10 2023-06-30 13F GREENE CNTY BANCORP COM 394357107 2,130 2,126 53,150.00 63 0.0000
2023-05-11 2023-03-31 13F GREENE CNTY BANCORP COM 394357107 4 -21 -84.00 0 -100.00 0.0000
2023-02-09 2022-12-31 13F GREENE CNTY BANCORP COM 394357107 25 -27 -51.92 1 -66.67 0.0000
2022-11-10 2022-09-30 13F GREENE CNTY BANCORP COM 394357107 52 -137 -72.49 3 -66.67 0.0000
2022-08-10 2022-06-30 13F GREENE CNTY BANCORP COM 394357107 189 -6,328 -97.10 9 -96.91 0.0000
2022-05-12 2022-03-31 13F GREENE CNTY BANCORP COM 394357107 6,517 6,517 291 0.0002
2021-08-10 2021-06-30 13F GREENE COUNTY BANCORP COM 394357107 0 -204 -100.00 0 -100.00
2021-05-13 2021-03-31 13F GREENE COUNTY BANCORP COM 394357107 204 -420 -67.31 5 -68.75 0.0000
2021-02-11 2020-12-31 13F GREENE COUNTY BANCORP COM 394357107 624 477 324.49 16 433.33 0.0000
2020-11-12 2020-09-30 13F GREENE COUNTY BANCORP COM 394357107 147 -275 -65.17 3 -66.67 0.0000
2020-08-12 2020-06-30 13F GREENE COUNTY BANCORP COM 394357107 422 -757 -64.21 9 -67.86 0.0000
2020-05-12 2020-03-31 13F GREENE COUNTY BANCORP COM 394357107 1,179 515 77.56 28 47.37 0.0000
2020-02-12 2019-12-31 13F GREENE COUNTY BANCORP COM 394357107 664 238 55.87 19 58.33 0.0000
2019-11-08 2019-09-30 13F GREENE COUNTY BANCORP COM 394357107 426 -484 -53.19 12 -53.85 0.0000
2019-08-12 2019-06-30 13F GREENE COUNTY BANCORP COM 394357107 910 95 11.66 26 4.00 0.0000
2019-05-13 2019-03-31 13F GREENE COUNTY BANCORP COM 394357107 815 15 1.88 25 0.00 0.0000
2019-02-12 2018-12-31 13F GREENE COUNTY BANCORP COM 394357107 800 -34 -4.08 25 -7.41 0.0000
2018-11-13 2018-09-30 13F GREENE COUNTY BANCORP COM 394357107 834 234 39.00 27 35.00 0.0000
2018-08-10 2018-06-30 13F GREENE COUNTY BANCORP COM 394357107 600 326 118.98 20 100.00 0.0000
2018-05-11 2018-03-31 13F GREENE COUNTY BANCORP COM 394357107 274 -60 -17.96 10 -9.09 0.0000
2018-02-12 2017-12-31 13F GREENE COUNTY BANCORP COM 394357107 334 334 11 0.0000
2017-11-13 2017-09-30 13F GREENE COUNTY BANCORP COM 394357107 0 -21 -100.00 0 -100.00
2017-08-11 2017-06-30 13F GREENE COUNTY BANCORP COM 394357107 21 -942 -97.82 1 -95.45 0.0000
2017-05-12 2017-03-31 13F GREENE COUNTY BANCORP COM 394357107 963 -2,075 -68.30 22 -68.57 0.0000
2017-02-10 2016-12-31 13F GREENE COUNTY BANCORP COM 394357107 3,038 2,063 211.59 70 337.50 0.0001
2016-11-10 2016-09-30 13F GREENE COUNTY BANCORP COM 394357107 975 676 226.09 16 220.00 0.0000
2016-08-12 2016-06-30 13F GREENE COUNTY BANCORP COM 394357107 299 299 0.00 5 0.0000
2015-11-13 2015-09-30 13F GREENE COUNTY BANCORP COM 394357107 0 -28 -100.00 0 -100.00
2015-08-13 2015-06-30 13F GREENE COUNTY BANCORP COM 394357107 28 28 1 0.0000
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.