Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionCanandaigua National Corp
Latest Disclosed Ownership18,761 shares
Latest Disclosed Value $ 2,550,933
Canandaigua National Corp reports 18.86% decrease in ownership of GLW / Corning Incorporated

On April 8, 2026 - Canandaigua National Corp filed a 13F-HR form disclosing ownership of 18,761 shares of Corning Incorporated (MX:GLW) valued at $2,550,933 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 25, 2023 disclosing 23,122 shares of Corning Incorporated.

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)
2026-04-08 2026-03-31 13F Corning Com 219350105 18,761 -4,361 -18.86 2,551 0.2283
2023-01-25 2022-12-31 13F Corning Com 219350105 23,122 635 2.82 1 -100.00 0.0001
2022-10-05 2022-09-30 13F Corning Com 219350105 22,487 -154 -0.68 653 -8.42 0.1160
2022-07-05 2022-06-30 13F Corning Com 219350105 22,641 633 2.88 713 -12.19 0.1263
2022-05-09 2022-03-31 13F Corning Com 219350105 22,008 -19,130 -46.50 812 -47.00 0.1235
2022-01-04 2021-12-31 13F Corning Com 219350105 41,138 370 0.91 1,532 2.96 0.2261
2021-10-04 2021-09-30 13F Corning Com 219350105 40,768 18,228 80.87 1,488 61.39 0.2423
2021-07-06 2021-06-30 13F Corning Com 219350105 22,540 -1,317 -5.52 922 -11.18 0.1496
2021-04-05 2021-03-31 13F Corning Com 219350105 23,857 -1,026 -4.12 1,038 15.85 0.1754
2021-02-11 2020-12-31 13F Corning Com 219350105 24,883 -633 -2.48 896 8.34 0.1574
2020-10-19 2020-09-30 13F Corning Com 219350105 25,516 124 0.49 827 25.68 0.1462
2020-07-07 2020-06-30 13F Corning Com 219350105 25,392 25,392 658 0.1208
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.