Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionAbbot Financial Management, Inc.
Latest Disclosed Ownership40,940 shares
Latest Disclosed Value $ 5,566,612
Abbot Financial Management, Inc. reports 0.76% decrease in ownership of GLW / Corning Incorporated

On May 13, 2026 - Abbot Financial Management, Inc. filed a 13F-HR form disclosing ownership of 40,940 shares of Corning Incorporated (MX:GLW) valued at $5,566,612 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 41,255 shares of Corning Incorporated. This represents a change in shares of -0.76% during the quarter.

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)
2026-05-13 2026-03-31 13F CORNING COM 219350105 40,940 -315 -0.76 5,567 54.10 2.3250
2026-02-13 2025-12-31 13F CORNING COM 219350105 41,255 -700 -1.67 3,612 4.97 1.4979
2025-11-10 2025-09-30 13F CORNING COM 219350105 41,955 -1,200 -2.78 3,442 51.65 1.4703
2025-08-14 2025-06-30 13F CORNING COM 219350105 43,155 0 0.00 2,270 14.89 1.0468
2025-05-07 2025-03-31 13F CORNING COM 219350105 43,155 -500 -1.15 1,976 -4.77 1.0250
2025-02-06 2024-12-31 13F CORNING COM 219350105 43,655 -1,100 -2.46 2,074 2.67 1.0328
2024-11-08 2024-09-30 13F CORNING COM 219350105 44,755 -600 -1.32 2,021 14.64 1.0169
2024-08-09 2024-06-30 13F CORNING COM 219350105 45,355 -10,050 -18.14 1,762 -3.50 0.9440
2024-05-13 2024-03-31 13F CORNING COM 219350105 55,405 0 0.00 1,826 8.24 1.0075
2024-02-09 2023-12-31 13F CORNING COM 219350105 55,405 200 0.36 1,687 0.30 1.0150
2023-11-13 2023-09-30 13F CORNING COM 219350105 55,205 -1,250 -2.21 1,682 -14.96 1.1312
2023-08-14 2023-06-30 13F CORNING COM 219350105 56,455 0 0.00 1,978 -0.65 1.2694
2023-05-15 2023-03-31 13F CORNING COM 219350105 56,455 -1,200 -2.08 1,992 8.15 1.3369
2023-02-09 2022-12-31 13F CORNING COM 219350105 57,655 -2,000 -3.35 1,842 6.35 1.2595
2022-11-14 2022-09-30 13F CORNING COM 219350105 59,655 -200 -0.33 1,731 -8.22 1.2328
2022-08-09 2022-06-30 13F CORNING COM 219350105 59,855 1,000 1.70 1,886 -13.17 1.1400
2022-05-12 2022-03-31 13F CORNING COM 219350105 58,855 -3,200 -5.16 2,172 -5.97 1.0604
2022-02-15 2021-12-31 13F CORNING COM 219350105 62,055 -845 -1.34 2,310 0.65 1.0316
2021-11-04 2021-09-30 13F CORNING COM 219350105 62,900 -700 -1.10 2,295 -11.76 1.0438
2021-08-05 2021-06-30 13F CORNING COM 219350105 63,600 0 0.00 2,601 -6.00 1.1369
2021-05-13 2021-03-31 13F CORNING COM 219350105 63,600 -1,400 -2.15 2,767 18.25 1.2554
2021-02-11 2020-12-31 13F CORNING INC COM Stock 219350105 65,000 -200 -0.31 2,340 10.74 1.3480
2020-10-26 2020-09-30 13F CORNING INC COM Stock 219350105 65,200 -500 -0.76 2,113 24.15 1.3713
2020-07-22 2020-06-30 13F CORNING INC COM Stock 219350105 65,700 -11,000 -14.34 1,702 8.06 1.1712
2020-05-12 2020-03-31 13F CORNING INC COM Stock 219350105 76,700 -2,000 -2.54 1,575 -31.25 1.2818
2020-02-12 2019-12-31 13F CORNING INC COM Stock 219350105 78,700 -600 -0.76 2,291 1.28 1.4510
2019-11-13 2019-09-30 13F CORNING INC COM Stock 219350105 79,300 -950 -1.18 2,262 -15.19 1.6143
2019-08-08 2019-06-30 13F CORNING INC COM Stock 219350105 80,250 8,600 12.00 2,667 12.44 1.9333
2019-05-15 2019-03-31 13F CORNING INC COM Stock 219350105 71,650 -500 -0.69 2,372 8.81 1.8412
2019-02-07 2018-12-31 13F CORNING INC COM Stock 219350105 72,150 0 0.00 2,180 -14.41 1.9200
2018-11-09 2018-09-30 13F CORNING INC COM Stock 219350105 72,150 -700 -0.96 2,547 27.10 1.8953
2018-08-09 2018-06-30 13F CORNING INC COM Stock 219350105 72,850 -1,800 -2.41 2,004 -3.70 1.5944
2018-05-02 2018-03-31 13F CORNING INC COM Stock 219350105 74,650 3,400 4.77 2,081 -8.69 1.6708
2018-02-12 2017-12-31 13F CORNING INC COM Stock 219350105 71,250 -1,500 -2.06 2,279 -1.94 1.8166
2017-10-25 2017-09-30 13F CORNING INC COM Stock 219350105 72,750 1,600 2.25 2,324 8.70 1.9361
2017-08-11 2017-06-30 13F CORNING INC COM Stock 219350105 71,150 71,150 2,138 1.9169
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.