Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionELCO Management Co., LLC
Latest Disclosed Ownership13,261 shares
Latest Disclosed Value $ 1,803,098
ELCO Management Co., LLC reports 7.32% decrease in ownership of GLW / Corning Incorporated

On April 23, 2026 - ELCO Management Co., LLC filed a 13F-HR form disclosing ownership of 13,261 shares of Corning Incorporated (MX:GLW) valued at $1,803,098 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 14,309 shares of Corning Incorporated. This represents a change in shares of -7.32% 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)
2026-04-23 2026-03-31 13F CORNING COM 219350105 13,261 -1,048 -7.32 1,803 44.01 0.8509
2026-02-04 2025-12-31 13F CORNING COM 219350105 14,309 -617 -4.13 1,253 2.29 0.7899
2025-11-05 2025-09-30 13F CORNING COM 219350105 14,926 -1,065 -6.66 1,224 45.71 0.6384
2025-08-04 2025-06-30 13F CORNING COM 219350105 15,991 -250 -1.54 841 13.06 0.4406
2025-05-01 2025-03-31 13F CORNING COM 219350105 16,241 -60 -0.37 744 -4.01 0.4110
2025-02-13 2024-12-31 13F CORNING COM 219350105 16,301 0 0.00 775 5.31 0.4070
2024-11-14 2024-09-30 13F CORNING COM 219350105 16,301 0 0.00 736 16.11 0.3970
2024-08-14 2024-06-30 13F CORNING COM 219350105 16,301 -2,490 -13.25 633 2.26 0.3686
2024-05-14 2024-03-31 13F CORNING COM 219350105 18,791 -1,625 -7.96 619 -0.32 0.3771
2024-02-14 2023-12-31 13F CORNING COM 219350105 20,416 -5,730 -21.92 622 -21.98 0.4096
2023-11-14 2023-09-30 13F CORNING COM 219350105 26,146 -935 -3.45 797 -16.03 0.5753
2023-08-11 2023-06-30 13F CORNING COM 219350105 27,081 -800 -2.87 949 -3.56 0.6865
2023-05-15 2023-03-31 13F CORNING COM 219350105 27,881 762 2.81 984 13.51 0.7151
2023-02-14 2022-12-31 13F CORNING COM 219350105 27,119 105 0.39 866 10.46 0.6510
2022-11-14 2022-09-30 13F CORNING COM 219350105 27,014 14 0.05 784 -7.87 0.6242
2022-08-12 2022-06-30 13F CORNING COM 219350105 27,000 1,230 4.77 851 -10.52 0.6978
2022-05-16 2022-03-31 13F CORNING COM 219350105 25,770 0 0.00 951 -0.83 0.6474
2022-02-14 2021-12-31 13F CORNING COM 219350105 25,770 2,500 10.74 959 12.96 0.6854
2021-11-15 2021-09-30 13F CORNING COM 219350105 23,270 196 0.85 849 -10.06 0.6530
2021-08-11 2021-06-30 13F CORNING COM 219350105 23,074 7,965 52.72 944 43.68 0.7008
2021-05-14 2021-03-31 13F CORNING COM 219350105 15,109 -9,196 -37.84 657 -24.91 0.5946
2021-02-16 2020-12-31 13F CORNING COM 219350105 24,305 1,935 8.65 875 20.69 0.7546
2020-11-12 2020-09-30 13F CORNING COM 219350105 22,370 95 0.43 725 25.65 0.5912
2020-08-13 2020-06-30 13F CORNING COM 219350105 22,275 -1,000 -4.30 577 20.71 0.4857
2020-05-14 2020-03-31 13F CORNING COM 219350105 23,275 205 0.89 478 -28.87 0.4999
2020-02-14 2019-12-31 13F CORNING COM 219350105 23,070 715 3.20 672 5.33 0.4048
2019-11-14 2019-09-30 13F CORNING COM 219350105 22,355 2,410 12.08 638 -3.77 0.3839
2019-08-01 2019-06-30 13F CORNING COM 219350105 19,945 4,500 29.14 663 29.75 0.3668
2019-05-13 2019-03-31 13F CORNING COM 219350105 15,445 15,445 511 0.3018
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.