Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionNational Pension Service
Latest Disclosed Ownership2,193,110 shares
Latest Disclosed Value $ 298,197,167
National Pension Service reports 4.19% decrease in ownership of GLW / Corning Incorporated

On May 12, 2026 - National Pension Service filed a 13F-HR form disclosing ownership of 2,193,110 shares of Corning Incorporated (MX:GLW) valued at $298,197,167 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,288,936 shares of Corning Incorporated. This represents a change in shares of -4.19% 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)
2026-05-12 2026-03-31 13F CORNING COM 219350105 2,193,110 -95,826 -4.19 298,197 48.79 0.2265
2026-02-10 2025-12-31 13F CORNING CORNING INC 219350105 2,288,936 763,100 50.01 200,419 60.13 0.1484
2025-11-04 2025-09-30 13F CORNING COM 219350105 1,525,836 76,557 5.28 125,164 64.22 0.0972
2025-08-08 2025-06-30 13F CORNING COM 219350105 1,449,279 7,617 0.53 76,218 15.48 0.0658
2025-05-13 2025-03-31 13F CORNING COM 219350105 1,441,662 11,240 0.79 65,999 -2.90 0.0634
2025-02-05 2024-12-31 13F CORNING COM 219350105 1,430,422 -78,446 -5.20 67,974 -0.22 0.0643
2024-10-30 2024-09-30 13F CORNINGINC COM 219350105 1,508,868 152,922 11.28 68,125 29.32 0.0657
2024-08-13 2024-06-30 13F CORNING COM 219350105 1,355,946 -30,119 -2.17 52,679 15.31 0.0605
2024-05-14 2024-03-31 13F CORNING COM 219350105 1,386,065 38,182 2.83 45,685 11.31 0.0548
2024-02-07 2023-12-31 13F CORNING COM 219350105 1,347,883 0 0.00 41,043 1.10 0.0572
2023-11-15 2023-09-30 13F CORNING COM 219350105 1,347,883 10,903 0.82 40,598 -12.52 0.0650
2023-08-16 2023-06-30 13F CORNING COM 219350105 1,336,980 51,726 4.02 46,407 3.70 0.0749
2023-05-12 2023-03-31 13F CORNING COM 219350105 1,285,254 41,351 3.32 44,753 12.64 0.0815
2023-02-24 2022-12-31 13F/A-1 CORNING COM 219350105 1,243,903 33,023 2.73 39,730 10.77 0.0782
2023-02-21 2022-12-31 13F CORNING COM 219350105 1,243,903 33,023 40 0.0782
2023-02-24 2022-09-30 13F/A-1 CORNING COM 219350105 1,210,880 -22,457 -1.82 35,866 -7.71 0.0748
2022-11-18 2022-09-30 13F CORNING COM 219350105 1,210,880 -22,457 35,866 0.0748
2022-08-17 2022-06-30 13F CORNING COM 219350105 1,233,337 20,045 1.65 38,862 -13.22 0.0801
2022-05-13 2022-03-31 13F CORNING COM 219350105 1,213,292 -214,256 -15.01 44,783 -15.74 0.0818
2022-02-15 2021-12-31 13F CORNING COM 219350105 1,427,548 96,690 7.27 53,148 9.44 0.0927
2021-11-18 2021-09-30 13F CORNING COM 219350105 1,330,858 8,104 0.61 48,563 -10.24 0.0925
2021-08-17 2021-06-30 13F CORNING COM 219350105 1,322,754 21,946 1.69 54,101 -4.41 0.1028
2021-05-14 2021-03-31 13F CORNING COM 219350105 1,300,808 249,358 23.72 56,598 49.52 0.1184
2021-02-19 2020-12-31 13F CORNING COM 219350105 1,051,450 -44,583 -4.07 37,852 7.82 0.0863
2020-11-13 2020-09-30 13F CORNING COM 219350105 1,096,033 0 0.00 35,106 23.67 0.0922
2020-08-11 2020-06-30 13F CORNING COM 219350105 1,096,033 11,373 1.05 28,387 27.42 0.0811
2020-05-27 2020-03-31 13F CORNING COM 219350105 1,084,660 0 0.00 22,279 -29.44 0.0754
2020-02-21 2019-12-31 13F CORNING COM 219350105 1,084,660 -96,053 -8.14 31,574 -6.24 0.0866
2019-11-15 2019-09-30 13F CORNING COM 219350105 1,180,713 55,380 4.92 33,674 -9.95 0.1066
2019-08-14 2019-06-30 13F CORNING COM 219350105 1,125,333 74,067 7.05 37,395 7.47 0.1250
2019-05-15 2019-03-31 13F CORNING COM 219350105 1,051,266 38,951 3.85 34,797 1.91 0.1339
2019-02-15 2018-12-31 13F CORNING COM 219350105 1,012,315 49,323 5.12 34,145 0.44 0.1409
2018-11-15 2018-09-30 13F CORNING COM 219350105 962,992 3,082 0.32 33,994 31.21 0.1384
2018-08-14 2018-06-30 13F CORNING COM 219350105 959,910 49,983 5.49 25,908 2.12 0.1172
2018-04-13 2018-03-31 13F CORNING COM 219350105 909,927 -22,087 -2.37 25,369 -14.91 0.1258
2018-01-17 2017-12-31 13F CORNING COM 219350105 932,014 12,682 1.38 29,815 8.28 0.1488
2017-10-16 2017-09-30 13F CORNING COM 219350105 919,332 37,411 4.24 27,534 2.80 0.1515
2017-07-13 2017-06-30 13F CORNING COM 219350105 881,921 42,877 5.11 26,784 15.83 0.1595
2017-04-11 2017-03-31 13F CORNING COM 219350105 839,044 -126,500 -13.10 23,124 -1.32 0.1548
2017-01-18 2016-12-31 13F CORNING COM 219350105 965,544 86,854 9.88 23,434 12.77 0.1603
2016-10-14 2016-09-30 13F CORNING COM 219350105 878,690 69,881 8.64 20,781 25.46 0.1666
2016-08-11 2016-06-30 13F CORNING COM 219350105 808,809 5,866 0.73 16,564 -1.25 0.1470
2016-05-16 2016-03-31 13F CORNING COM 219350105 802,943 31,336 4.06 16,773 18.92 0.1680
2016-02-12 2015-12-31 13F CORNING COM 219350105 771,607 45,565 6.28 14,105 13.48 0.1481
2015-10-15 2015-09-30 13F CORNING COM 219350105 726,042 122,197 20.24 12,430 4.34 0.1572
2015-07-15 2015-06-30 13F CORNING COM 219350105 603,845 83,584 16.07 11,913 0.96 0.1545
2015-04-15 2015-03-31 13F CORNING COM 219350105 520,261 70,170 15.59 11,800 14.33 0.1705
2015-01-13 2014-12-31 13F CORNING COM 219350105 450,091 -91,719 -16.93 10,321 -1.51 0.1742
2014-11-07 2014-09-30 13F CORNING COM 219350105 541,810 541,810 10,479 0.1664
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.