Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionWhittier Trust Co
Latest Disclosed Ownership18,242 shares
Latest Disclosed Value $ 2,672,453
Whittier Trust Co reports 14.12% decrease in ownership of GLW / Corning Incorporated

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 18,242 shares of Corning Incorporated (MX:GLW) valued at $2,672,453 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 21,242 shares of Corning Incorporated. This represents a change in shares of -14.12% 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)
2026-04-28 2026-03-31 13F CORNING common 219350105 18,242 -3,000 -14.12 2,672 41.00 0.0158
2026-01-26 2025-12-31 13F CORNING common 219350105 21,242 2,345 12.41 1,896 20.01 0.0205
2025-10-31 2025-09-30 13F CORNING common 219350105 18,897 34 0.18 1,579 59.17 0.0180
2025-07-30 2025-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 18,863 -220 -1.15 992 13.63 0.0120
2025-05-02 2025-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 19,083 123 0.65 873 -3.00 0.0122
2025-02-11 2024-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 18,960 -643 -3.28 901 1.69 0.0119
2024-10-21 2024-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 19,603 863 4.61 885 21.73 0.0118
2024-07-29 2024-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 18,740 0 0.00 728 17.83 0.0103
2024-05-02 2024-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 18,740 -1,800 -8.76 617 -1.28 0.0090
2024-01-11 2023-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 20,540 -70 -0.34 625 -0.32 0.0101
2023-10-27 2023-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 20,610 70 0.34 628 -12.80 0.0112
2023-07-24 2023-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 20,540 0 0.00 720 -0.69 0.0125
2023-04-21 2023-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 20,540 -1,509 -6.84 724 2.84 0.0132
2023-01-25 2022-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 22,049 -107 -0.48 704 9.49 0.0137
2022-10-21 2022-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 22,156 1,693 8.27 643 -0.16 0.0135
2022-07-28 2022-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 20,463 8,509 71.18 644 46.03 0.0130
2022-04-29 2022-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 11,954 0 0.00 441 -0.90 0.0074
2022-01-19 2021-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 11,954 0 0.00 445 2.06 0.0072
2021-11-01 2021-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 11,954 -1,000 -7.72 436 -17.74 0.0079
2021-07-29 2021-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 12,954 0 0.00 530 -5.86 0.0094
2021-04-26 2021-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 12,954 154 1.20 563 22.39 0.0109
2021-01-29 2020-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 12,800 0 0.00 460 10.84 0.0098
2020-10-30 2020-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 12,800 500 4.07 415 30.50 0.0099
2020-07-10 2020-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 12,300 1,500 13.89 318 43.24 0.0088
2020-04-27 2020-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 10,800 -373 -3.34 222 -31.69 0.0072
2020-01-31 2019-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 11,173 1,468 15.13 325 17.33 0.0085
2019-10-18 2019-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 9,705 126 1.32 277 -12.89 0.0079
2019-07-23 2019-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 9,579 0 0.00 318 0.32 0.0093
2019-04-29 2019-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 9,579 0 0.00 317 9.31 0.0097
2019-02-07 2018-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 9,579 750 8.49 290 -6.75 0.0100
2018-10-23 2018-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 8,829 0 0.00 311 27.98 0.0097
2018-07-27 2018-06-30 13F/A-1 CORNING INC COM US LARGE-CAP EQUITIES 219350105 8,829 1,575 21.71 243 20.30 0.0080
2018-07-20 2018-06-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 -1,080 136
2018-05-01 2018-03-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 7,254 300 4.31 202 -9.01 0.0068
2018-02-07 2017-12-31 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 6,954 0 0.00 222 6.73 0.0077
2017-10-23 2017-09-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 6,954 0 0.00 208 0.00 0.0076
2017-07-20 2017-06-30 13F CORNING INC COM US LARGE-CAP EQUITIES 219350105 6,954 0 0.00 208 10.64 0.0080
2017-04-26 2017-03-31 13F CORNING US LARGE CAP EQUITIES 219350105 6,954 0 0.00 188 11.24 0.0076
2017-01-18 2016-12-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,954 0 0.00 169 3.05 0.0072
2016-11-10 2016-09-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,954 0 0.00 164 15.49 0.0071
2016-07-28 2016-06-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,954 154 2.26 142 0.00 0.0063
2016-04-28 2016-03-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,800 0 0.00 142 14.52 0.0063
2016-02-10 2015-12-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,800 100 1.49 124 7.83 0.0056
2015-11-12 2015-09-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,700 -5,368 -44.48 115 -51.68 0.0056
2015-08-13 2015-06-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 12,068 5,894 95.46 238 70.00 0.0106
2015-05-05 2015-03-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 6,174 0.00 140 0.0064
2015-02-04 2014-12-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 0 -6,174 -100.00 0 -100.00
2014-11-07 2014-09-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 0 0.00 119 -12.50 0.0058
2014-08-04 2014-06-30 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 0 0.00 136 6.25 0.0067
2014-05-01 2014-03-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 0 0.00 128 16.36 0.0066
2014-02-05 2013-12-31 13F CORNING INC COM US LARGE CAP EQUITIES 219350105 6,174 0 0.00 110 22.22 0.0056
2013-11-18 2013-09-30 13F CORNING COM 219350105 6,174 -1,400 -18.48 90 -16.67 0.0049
2013-08-14 2013-06-30 13F CORNING COM 219350105 7,574 7,574 108 0.0061
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.