Community Financial System, Inc.
US ˙ NYSE ˙ US2036071064

SecurityCBU / Community Financial System, Inc.
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership787 shares
Latest Disclosed Value $ 46,157
Simplex Trading, Llc ownership in CBU / Community Financial System, Inc.

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 787 shares of Community Financial System, Inc. (US:CBU) valued at $46,158 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 5, 2025 disclosing 0 shares of Community Financial System, Inc.. The current value of the position is $48,416 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (CBU) in the form of stock options. The firm currently holds call options representing 100 of underlying shares valued at $5,865 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CBU / Community Financial System, Inc. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 787 787 46 0.0000
2025-08-05 2025-06-30 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 0 -120 -100.00 0 0.0000
2025-05-12 2025-03-31 13F COMMUNITY FINANCIAL SYSTEM I COM 203607106 120 120 0 0.0000
2024-04-25 2024-03-31 13F COMMUNITY BK SYS COM 203607106 0 -147 -100.00 0 0.0000
2024-02-02 2023-12-31 13F COMMUNITY BK SYS COM 203607106 147 147 0 0.0000
2021-08-12 2021-06-30 13F COMMUNITY BK SYS COM 203607106 0 -343 -100.00 0 -100.00
2021-04-26 2021-03-31 13F COMMUNITY BK SYS COM 203607106 343 258 303.53 26 420.00 0.0000
2021-02-02 2020-12-31 13F COMMUNITY BK SYS COM 203607106 85 85 -75.22 5 -80.77 0.0000
2019-07-26 2019-06-30 13F COMMUNITY BK SYS COM 203607106 0 -1,617 -100.00 0 -100.00
2019-04-18 2019-03-31 13F COMMUNITY BK SYS COM 203607106 1,617 1,617 96 0.0003
2018-07-30 2018-06-30 13F COMMUNITY BK SYS COM 203607106 0 -800 -100.00 0 -100.00
2018-04-26 2018-03-31 13F COMMUNITY BK SYS COM 203607106 800 800 42 0.0018
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 100 6 n/a n/a n/a
2025-11-12 2025-09-30 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 0 -100.00 0 n/a n/a n/a
2025-08-05 2025-06-30 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 100 0.00 0 n/a n/a n/a
2025-05-12 2025-03-31 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 100 -66.67 0 n/a n/a n/a
2025-02-11 2024-12-31 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 300 50.00 0 n/a n/a n/a
2024-11-08 2024-09-30 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 200 -33.33 0 n/a n/a n/a
2024-07-25 2024-06-30 13F COMMUNITY FINANCIAL SYSTEM I CALL Call 300 0 n/a n/a n/a
2023-04-27 2023-03-31 13F COMMUNITY BK SYS CALL Call 0 -100.00 0 n/a n/a n/a
2023-02-02 2022-12-31 13F COMMUNITY BK SYS CALL Call 2,200 0.00 0 -100.00 n/a n/a n/a
2022-11-04 2022-09-30 13F COMMUNITY BK SYS CALL Call 2,200 132 n/a n/a n/a
2022-08-03 2022-06-30 13F COMMUNITY BK SYS CALL Call 0 -100.00 0 n/a n/a n/a
2022-05-02 2022-03-31 13F COMMUNITY BK SYS CALL Call 200 0.00 0 n/a n/a n/a
2022-02-23 2021-12-31 13F/A COMMUNITY BK SYS CALL Call 200 -86.67 0 -100.00 n/a n/a n/a
2022-02-04 2021-12-31 13F COMMUNITY BK SYS CALL Call 1,500 114 n/a n/a n/a
2021-10-28 2021-09-30 13F COMMUNITY BK SYS CALL Call 1,500 0.00 114 0.88 n/a n/a n/a
2021-08-12 2021-06-30 13F COMMUNITY BK SYS CALL Call 1,500 9,900.00 113 -1.74 n/a n/a n/a
2021-04-26 2021-03-31 13F COMMUNITY BK SYS CALL Call 15 400.00 115 538.89 n/a n/a n/a
2021-02-02 2020-12-31 13F COMMUNITY BK SYS CALL Call 3 -25.00 18 350.00 n/a n/a n/a
2020-10-14 2020-09-30 13F COMMUNITY BK SYS CALL Call 4 -80.00 4 -96.49 n/a n/a n/a
2020-07-13 2020-06-30 13F COMMUNITY BK SYS CALL Call 20 53.85 114 50.00 n/a n/a n/a
2020-04-29 2020-03-31 13F COMMUNITY BK SYS CALL Call 13 62.50 76 7,500.00 n/a n/a n/a
2020-02-05 2019-12-31 13F COMMUNITY BK SYS CALL Call 8 -60.00 1 -99.19 n/a n/a n/a
2019-10-15 2019-09-30 13F COMMUNITY BK SYS CALL Call 20 100.00 123 89.23 n/a n/a n/a
2019-07-26 2019-06-30 13F COMMUNITY BK SYS CALL Call 10 -50.00 65 -47.15 n/a n/a n/a
2018-01-10 2017-12-31 13F COMMUNITY BK SYS CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-10-25 2017-09-30 13F COMMUNITY BK SYS CALL Call 37 0.00 1 -80.00 n/a n/a n/a
2017-07-12 2017-06-30 13F COMMUNITY BK SYS CALL Call 37 -79.56 5 150.00 n/a n/a n/a
2017-04-21 2017-03-31 13F COMMUNITY BK SYS CALL Call 181 1,710.00 2 -71.43 n/a n/a n/a
2017-01-11 2016-12-31 13F COMMUNITY BK SYS CALL Call 10 -37.50 7 40.00 n/a n/a n/a
2016-10-07 2016-09-30 13F COMMUNITY BK SYS CALL Call 16 -60.98 5 25.00 n/a n/a n/a
2016-07-18 2016-06-30 13F COMMUNITY BK SYS CALL Call 41 115.79 4 100.00 n/a n/a n/a
2016-04-14 2016-03-31 13F COMMUNITY BK SYS CALL Call 19 533.33 2 -50.00 n/a n/a n/a
2016-01-20 2015-12-31 13F COMMUNITY BK SYS CALL Call 3 -84.21 0 -100.00 n/a n/a n/a
2015-04-21 2015-03-31 13F COMMUNITY BK SYS CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-03-04 2014-12-31 13F COMMUNITY BK SYS CALL Call 27 2 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-11 2025-12-31 13F COMMUNITY FINANCIAL SYSTEM I PUT Put 0 -100.00 0 n/a n/a n/a
2025-11-12 2025-09-30 13F COMMUNITY FINANCIAL SYSTEM I PUT Put 300 0 n/a n/a n/a
2025-08-05 2025-06-30 13F COMMUNITY FINANCIAL SYSTEM I PUT Put 0 -100.00 0 n/a n/a n/a
2025-05-12 2025-03-31 13F COMMUNITY FINANCIAL SYSTEM I PUT Put 100 0 n/a n/a n/a
2024-07-25 2024-06-30 13F COMMUNITY BK SYS PUT Put 0 -100.00 0 n/a n/a n/a
2024-04-25 2024-03-31 13F COMMUNITY BK SYS PUT Put 100 0 n/a n/a n/a
2021-08-12 2021-06-30 13F COMMUNITY BK SYS PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-04-26 2021-03-31 13F COMMUNITY BK SYS PUT Put 5 -81.48 38 -77.38 n/a n/a n/a
2021-02-02 2020-12-31 13F COMMUNITY BK SYS PUT Put 27 440.00 168 342.11 n/a n/a n/a
2020-07-13 2020-06-30 13F COMMUNITY BK SYS PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-04-29 2020-03-31 13F COMMUNITY BK SYS PUT Put 2 11 n/a n/a n/a
2020-02-05 2019-12-31 13F COMMUNITY BK SYS PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-10-15 2019-09-30 13F COMMUNITY BK SYS PUT Put 15 92 n/a n/a n/a
2019-07-26 2019-06-30 13F COMMUNITY BK SYS PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-04-18 2019-03-31 13F COMMUNITY BK SYS PUT Put 25 149 n/a n/a n/a
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.