Community Financial System, Inc.
US ˙ NYSE ˙ US2036071064

SecurityCBU / Community Financial System, Inc.
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership14,174 shares
Latest Disclosed Value $ 831,305
Holocene Advisors, LP reports 102.14% increase in ownership of CBU / Community Financial System, Inc.

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 14,174 shares of Community Financial System, Inc. (US:CBU) valued at $831,305 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,012 shares of Community Financial System, Inc.. This represents a change in shares of 102.14% during the quarter. The current value of the position is $899,340 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)
2026-05-15 2026-03-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 14,174 7,162 102.14 831 106.72 0.0020
2026-02-17 2025-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 7,012 -1,420 -16.84 403 -18.62 0.0008
2025-11-14 2025-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 8,432 8,432 494 0.0011
2025-02-14 2024-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 0 -8,335 -100.00 0 -100.00
2024-11-14 2024-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 8,335 8,335 484 0.0020
2024-08-14 2024-06-30 13F COMMUNITY BK SYS COM 203607106 0 -195,311 -100.00 0 -100.00
2024-05-15 2024-03-31 13F COMMUNITY BK SYS COM 203607106 195,311 -143,691 -42.39 9,381 -46.90 0.0344
2024-02-14 2023-12-31 13F COMMUNITY BK SYS COM 203607106 339,002 62,657 22.67 17,665 51.45 0.0688
2023-11-14 2023-09-30 13F COMMUNITY BK SYS COM 203607106 276,345 276,345 11,665 0.0511
2023-05-15 2023-03-31 13F COMMUNITY BK SYS COM 203607106 0 -20,577 -100.00 0 -100.00
2023-02-14 2022-12-31 13F COMMUNITY BK SYS COM 203607106 20,577 -9,999 -32.70 1,295 -29.50 0.0079
2022-11-14 2022-09-30 13F COMMUNITY BK SYS COM 203607106 30,576 -11,323 -27.02 1,837 -30.71 0.0117
2022-08-15 2022-06-30 13F COMMUNITY BK SYS COM 203607106 41,899 7,460 21.66 2,651 9.73 0.0160
2022-05-16 2022-03-31 13F COMMUNITY BK SYS COM 203607106 34,439 3,477 11.23 2,416 4.77 0.0126
2022-02-14 2021-12-31 13F COMMUNITY BK SYS COM 203607106 30,962 2,417 8.47 2,306 18.07 0.0120
2021-11-15 2021-09-30 13F COMMUNITY BK SYS COM 203607106 28,545 -7,652 -21.14 1,953 -28.67 0.0106
2021-08-16 2021-06-30 13F COMMUNITY BK SYS COM 203607106 36,197 4,207 13.15 2,738 11.57 0.0155
2021-05-17 2021-03-31 13F COMMUNITY BK SYS COM 203607106 31,990 -2,489 -7.22 2,454 14.25 0.0154
2021-02-16 2020-12-31 13F COMMUNITY BK SYS COM 203607106 34,479 -3,126 -8.31 2,148 4.88 0.0136
2020-11-16 2020-09-30 13F COMMUNITY BK SYS COM 203607106 37,605 25,623 213.85 2,048 199.85 0.0156
2020-08-14 2020-06-30 13F COMMUNITY BK SYS COM 203607106 11,982 -6,666 -35.75 683 -37.74 0.0060
2020-05-15 2020-03-31 13F COMMUNITY BK SYS COM 203607106 18,648 -9,514 -33.78 1,097 -45.10 0.0118
2020-02-14 2019-12-31 13F COMMUNITY BK SYS COM 203607106 28,162 6,350 29.11 1,998 48.44 0.0179
2019-11-14 2019-09-30 13F COMMUNITY BK SYS COM 203607106 21,812 14,169 185.39 1,346 167.59 0.0139
2019-08-14 2019-06-30 13F COMMUNITY BK SYS COM 203607106 7,643 1,133 17.40 503 29.31 0.0064
2019-05-15 2019-03-31 13F COMMUNITY BK SYS COM 203607106 6,510 270 4.33 389 6.87 0.0060
2019-02-14 2018-12-31 13F COMMUNITY BK SYS COM 203607106 6,240 -3,593 -36.54 364 -39.43 0.0059
2018-11-14 2018-09-30 13F COMMUNITY BK SYS COM 203607106 9,833 2,637 36.65 601 41.41 0.0097
2018-08-14 2018-06-30 13F COMMUNITY BK SYS COM 203607106 7,196 -1,425 -16.53 425 -8.01 0.0090
2018-05-15 2018-03-31 13F COMMUNITY BK SYS COM 203607106 8,621 -7,776 -47.42 462 -47.56 0.0104
2018-02-14 2017-12-31 13F COMMUNITY BK SYS COM 203607106 16,397 16,397 881 0.0223
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.