Community Financial System, Inc.
US ˙ NYSE ˙ US2036071064

SecurityCBU / Community Financial System, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership27,955 shares
Latest Disclosed Value $ 1,605,729
Sei Investments Co reports 120.88% increase in ownership of CBU / Community Financial System, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 27,955 shares of Community Financial System, Inc. (US:CBU) valued at $1,605,735 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 12,656 shares of Community Financial System, Inc.. This represents a change in shares of 120.88% during the quarter. The current value of the position is $1,719,792 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)
2026-02-13 2025-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 27,955 15,299 120.88 1,606 116.31 0.0016
2025-11-13 2025-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 12,656 -175 -1.36 742 1.78 0.0008
2025-08-14 2025-06-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 12,831 -2,599 -16.84 730 -16.88 0.0008
2025-05-14 2025-03-31 13F/A-1 COMMUNITY FINANCIAL SYSTEM I COM 203607106 15,430 -17,809 -53.58 877 -57.22 0.0011
2025-05-13 2025-03-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 11,266 -21,973 682 0.0007
2025-02-11 2024-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 33,239 24,127 264.78 2,050 287.52 0.0026
2024-11-12 2024-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,112 -1,435 -13.61 529 6.44 0.0007
2024-08-13 2024-06-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 10,547 -590 -5.30 498 -6.93 0.0007
2024-05-07 2024-03-31 13F COMMUNITY BK SYS COM 203607106 11,137 -614 -5.23 535 -12.75 0.0008
2024-02-14 2023-12-31 13F COMMUNITY BK SYS COM 203607106 11,751 484 4.30 612 28.84 0.0010
2023-11-14 2023-09-30 13F COMMUNITY BK SYS COM 203607106 11,267 1,018 9.93 476 -1.04 0.0009
2023-08-11 2023-06-30 13F COMMUNITY BK SYS COM 203607106 10,249 2,790 37.40 480 22.76 0.0008
2023-05-12 2023-03-31 13F COMMUNITY BK SYS COM 203607106 7,459 7,459 392 0.0007
2023-02-10 2022-12-31 13F COMMUNITY BK SYS COM 203607106 0 -5,722 -100.00 0 -100.00
2022-11-14 2022-09-30 13F COMMUNITY BK SYS COM 203607106 5,722 -491 -7.90 344 -12.47 0.0008
2022-08-15 2022-06-30 13F COMMUNITY BK SYS COM 203607106 6,213 6,213 393 0.0008
2018-11-08 2018-09-30 13F COMMUNITY BK SYS COM 203607106 0 -76 -100.00 0 -100.00
2018-08-03 2018-06-30 13F COMMUNITY BK SYS COM 203607106 76 6 8.57 4 0.00 0.0000
2018-05-11 2018-03-31 13F COMMUNITY BK SYS COM 203607106 70 -10 -12.50 4 0.00 0.0000
2018-02-08 2017-12-31 13F COMMUNITY BK SYS COM 203607106 80 -65 -44.83 4 -50.00 0.0000
2017-11-06 2017-09-30 13F COMMUNITY BK SYS COM 203607106 145 58 66.67 8 60.00 0.0000
2017-07-31 2017-06-30 13F COMMUNITY BK SYS COM 203607106 87 87 5 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.