Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionOld Port Advisors
Latest Disclosed Ownership83,360 shares
Latest Disclosed Value $ 11,334,398
Old Port Advisors reports 2.03% decrease in ownership of GLW / Corning Incorporated

On April 6, 2026 - Old Port Advisors filed a 13F-HR form disclosing ownership of 83,360 shares of Corning Incorporated (MX:GLW) valued at $11,334,398 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 85,085 shares of Corning Incorporated. This represents a change in shares of -2.03% 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)
2026-04-06 2026-03-31 13F Corning, Inc. Common Stock 219350105 83,360 -1,725 -2.03 11,334 52.13 2.6096
2026-01-08 2025-12-31 13F Corning, Inc. Common Stock 219350105 85,085 -1,698 -1.96 7,450 4.66 1.8289
2025-10-06 2025-09-30 13F Corning, Inc. Common Stock 219350105 86,783 -1,999 -2.25 7,119 52.45 1.7882
2025-07-16 2025-06-30 13F Corning, Inc. Common Stock 219350105 88,782 -626 -0.70 4,669 14.07 1.2737
2025-05-06 2025-03-31 13F Corning, Inc. Common Stock 219350105 89,408 -2,051 -2.24 4,093 -5.82 1.2111
2025-01-02 2024-12-31 13F CORNING COM 219350105 91,459 -1,871 -2.00 4,346 3.16 1.2492
2024-10-24 2024-09-30 13F CORNING COM 219350105 93,330 -1,832 -1.93 4,214 13.96 1.1705
2024-07-18 2024-06-30 13F CORNING COM 219350105 95,162 -231 -0.24 3,697 17.59 1.1040
2024-06-26 2024-03-31 13F CORNING COM 219350105 95,393 4,006 4.38 3,144 13.01 0.9625
2024-06-26 2023-12-31 13F CORNING COM 219350105 91,387 -1,808 -1.94 2,783 -2.01 0.9243
2023-11-14 2023-09-30 13F CORNING COM 219350105 93,195 -2,471 -2.58 2,840 -15.15 1.0304
2023-04-12 2023-03-31 13F CORNING COM 219350105 95,666 -936 -0.97 3,346 8.46 1.2041
2023-01-11 2022-12-31 13F CORNING COM 219350105 96,602 1,097 1.15 3,085 3.14 1.1623
2022-10-13 2022-09-30 13F CORNING COM 219350105 95,505 1,046 1.11 2,991 0.03 1.1896
2022-07-08 2022-06-30 13F CORNING COM 219350105 94,459 866 0.93 2,990 -12.14 1.1567
2022-04-12 2022-03-31 13F CORNING COM 219350105 93,593 -1,290 -1.36 3,403 -6.43 1.1584
2022-01-12 2021-12-31 13F CORNING COM 219350105 94,883 -15 -0.02 3,637 5.39 1.2318
2021-10-12 2021-09-30 13F CORNING COM 219350105 94,898 -60 -0.06 3,451 -10.83 1.2504
2021-07-20 2021-06-30 13F CORNING COM 219350105 94,958 -6,307 -6.23 3,870 -12.17 1.3923
2021-04-08 2021-03-31 13F CORNING COM 219350105 101,265 30 0.03 4,406 24.64 1.7290
2021-01-08 2020-12-31 13F CORNING COM 219350105 101,235 2,815 2.86 3,535 10.82 1.5360
2020-10-08 2020-09-30 13F CORNING COM 219350105 98,420 4,412 4.69 3,190 31.01 1.5753
2020-07-08 2020-06-30 13F CORNING COM 219350105 94,008 9,008 10.60 2,435 39.46 1.2746
2020-04-17 2020-03-31 13F CORNING COM 219350105 85,000 -3,342 -3.78 1,746 -33.41 1.0654
2020-01-09 2019-12-31 13F CORNING COM 219350105 88,342 -1,497 -1.67 2,622 4.17 1.2660
2019-10-10 2019-09-30 13F CORNING COM 219350105 89,839 -542 -0.60 2,517 -17.48 1.3178
2019-07-12 2019-06-30 13F CORNING COM 219350105 90,381 -1,378 -1.50 3,050 0.43 1.5646
2019-04-08 2019-03-31 13F CORNING COM 219350105 91,759 -810 -0.88 3,037 11.53 1.5927
2019-01-30 2018-12-31 13F CORNING COM 219350105 92,569 -4,072 -4.21 2,723 2.41 1.5252
2018-09-24 2018-06-30 13F CORNING COM 219350105 96,641 96,641 2,659 1.4339
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.