Community Financial System, Inc.
US ˙ NYSE ˙ US2036071064

SecurityCBU / Community Financial System, Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership12,062 shares
Latest Disclosed Value $ 707,436
Mercer Global Advisors Inc /adv reports 12.15% increase in ownership of CBU / Community Financial System, Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 12,062 shares of Community Financial System, Inc. (US:CBU) valued at $707,436 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,755 shares of Community Financial System, Inc.. This represents a change in shares of 12.15% during the quarter. The current value of the position is $767,023 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 12,062 1,307 12.15 707 14.59 0.0010
2026-02-17 2025-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 10,755 1,106 11.46 618 9.20 0.0009
2025-11-14 2025-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,649 153 1.61 566 4.63 0.0009
2025-08-14 2025-06-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,496 71 0.75 540 0.93 0.0011
2025-05-15 2025-03-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,425 -91 -0.96 536 -8.70 0.0012
2025-02-14 2024-12-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,516 150 1.60 587 10.98 0.0014
2024-11-14 2024-09-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,366 -569 -5.73 528 12.58 0.0012
2024-08-12 2024-06-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 9,935 2,912 41.46 469 0.0013
2024-05-15 2024-03-31 13F COMMUNITY BK SYS COM 203607106 7,023 -154 -2.15 0 0.0010
2024-02-15 2023-12-31 13F COMMUNITY BK SYS COM 203607106 7,177 52 0.73 0 0.0011
2023-11-15 2023-09-30 13F/A-1 COMMUNITY BK SYS COM 203607106 7,125 821 13.02 0 0.0011
2023-11-14 2023-09-30 13F COMMUNITY BK SYS COM 203607106 7,125 821 0 0.0011
2023-08-14 2023-06-30 13F COMMUNITY BK SYS COM 203607106 6,304 -142 -2.20 0 0.0012
2023-05-16 2023-03-31 13F COMMUNITY BK SYS COM 203607106 6,446 -58 -0.89 0 0.0015
2023-02-09 2022-12-31 13F COMMUNITY BK SYS COM 203607106 6,504 86 1.34 0 -100.00 0.0020
2022-11-15 2022-09-30 13F COMMUNITY BK SYS COM 203607106 6,418 -50 -0.77 386 -5.62 0.0023
2022-08-10 2022-06-30 13F COMMUNITY BK SYS COM 203607106 6,468 -129 -1.96 409 -11.66 0.0025
2022-05-10 2022-03-31 13F COMMUNITY BK SYS COM 203607106 6,597 -6,507 -49.66 463 -52.56 0.0027
2022-02-04 2021-12-31 13F COMMUNITY BK SYS COM 203607106 13,104 169 1.31 976 10.28 0.0060
2021-11-10 2021-09-30 13F COMMUNITY BK SYS COM 203607106 12,935 4,841 59.81 885 44.61 0.0062
2021-08-10 2021-06-30 13F COMMUNITY BK SYS COM 203607106 8,094 172 2.17 612 0.66 0.0047
2021-08-10 2021-03-31 13F/A-1 COMMUNITY BK SYS COM 203607106 7,922 158 2.04 608 25.62 0.0055
2021-05-11 2021-03-31 13F COMMUNITY BK SYS COM 203607106 7,922 158 608 0.0058
2021-02-12 2020-12-31 13F COMMUNITY BK SYS COM 203607106 7,764 18 0.23 484 14.69 0.0060
2020-12-10 2020-09-30 13F COMMUNITY BK SYS COM 203607106 7,746 40 0.52 422 -3.87 0.0063
2020-08-10 2020-06-30 13F COMMUNITY BK SYS COM 203607106 7,706 -4 -0.05 439 -3.09 0.0080
2020-05-18 2020-03-31 13F COMMUNITY BK SYS COM 203607106 7,710 8 0.10 453 -17.03 0.0100
2020-02-13 2019-12-31 13F COMMUNITY BK SYS INC COM COM 203607106 7,702 0 0.00 546 14.95 0.0109
2019-11-12 2019-09-30 13F COMMUNITY BK SYS INC COM COM 203607106 7,702 -57 -0.73 475 -7.05 0.0112
2019-08-14 2019-06-30 13F COMMUNITY BK SYS INC COM COM 203607106 7,759 1 0.01 511 10.13 0.0135
2019-04-23 2019-03-31 13F/A-1 COMMUNITY BK SYS INC COM COM 203607106 7,758 7,758 464 0.0167
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.