Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionNorthern Trust Corp
Latest Disclosed Ownership8,698,937 shares
Latest Disclosed Value $ 1,182,794,466
Northern Trust Corp reports 4.95% decrease in ownership of GLW / Corning Incorporated

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 8,698,937 shares of Corning Incorporated (MX:GLW) valued at $1,182,794,466 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 9,151,823 shares of Corning Incorporated. This represents a change in shares of -4.95% 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)
2026-05-14 2026-03-31 13F CORNING COM 219350105 8,698,937 -452,886 -4.95 1,182,794 47.60 0.0321
2026-02-17 2025-12-31 13F CORNING COM 219350105 9,151,823 -635,958 -6.50 801,334 -0.19 0.0211
2025-11-14 2025-09-30 13F CORNING COM 219350105 9,787,781 -604,052 -5.81 802,892 46.91 0.1027
2025-08-13 2025-06-30 13F CORNING COM 219350105 10,391,833 -334,229 -3.12 546,506 11.30 0.0752
2025-05-13 2025-03-31 13F CORNING COM 219350105 10,726,062 -144,313 -1.33 491,039 -4.94 0.0729
2025-02-14 2024-12-31 13F CORNING COM 219350105 10,870,375 208,826 1.96 516,560 7.31 0.0731
2024-11-13 2024-09-30 13F CORNING COM 219350105 10,661,549 -381,122 -3.45 481,369 12.21 0.0788
2024-08-14 2024-06-30 13F CORNING COM 219350105 11,042,671 -77,102 -0.69 429,008 17.05 0.0723
2024-05-14 2024-03-31 13F CORNING COM 219350105 11,119,773 -388,403 -3.38 366,508 4.59 0.0633
2024-02-13 2023-12-31 13F CORNING COM 219350105 11,508,176 -531,724 -4.42 350,424 -4.48 0.0634
2023-11-13 2023-09-30 13F CORNING COM 219350105 12,039,900 232,699 1.97 366,856 -11.33 0.0711
2023-08-11 2023-06-30 13F CORNING COM 219350105 11,807,201 -97,619 -0.82 413,724 -1.49 0.0795
2023-05-15 2023-03-31 13F CORNING COM 219350105 11,904,820 54,318 0.46 420,002 10.96 0.0833
2023-02-13 2022-12-31 13F CORNING COM 219350105 11,850,502 -47,743 -0.40 378,505 9.62 0.0794
2022-11-14 2022-09-30 13F CORNING COM 219350105 11,898,245 134,573 1.14 345,288 -6.85 0.0789
2022-08-12 2022-06-30 13F CORNING COM 219350105 11,763,672 254,599 2.21 370,673 -12.74 0.0794
2022-05-13 2022-03-31 13F CORNING COM 219350105 11,509,073 -9,803 -0.09 424,800 -0.94 0.0747
2022-02-08 2021-12-31 13F CORNING COM 219350105 11,518,876 88,758 0.78 428,847 2.82 0.0703
2021-11-15 2021-09-30 13F CORNING COM 219350105 11,430,118 2,703,832 30.98 417,085 16.86 0.0738
2021-08-13 2021-06-30 13F CORNING COM 219350105 8,726,286 68,900 0.80 356,906 -5.25 0.0629
2021-05-12 2021-03-31 13F CORNING COM 219350105 8,657,386 -66,615 -0.76 376,682 19.94 0.0701
2021-02-11 2020-12-31 13F CORNING COM 219350105 8,724,001 -252,265 -2.81 314,065 7.96 0.0612
2020-11-16 2020-09-30 13F CORNING COM 219350105 8,976,266 -154,668 -1.69 290,920 23.02 0.0638
2020-08-14 2020-06-30 13F CORNING COM 219350105 9,130,934 19,285 0.21 236,491 26.36 0.0560
2020-05-14 2020-03-31 13F CORNING COM 219350105 9,111,649 100,353 1.11 187,153 -28.65 0.0537
2020-02-14 2019-12-31 13F CORNING COM 219350105 9,011,296 62,601 0.70 262,318 2.78 0.0587
2019-11-13 2019-09-30 13F CORNING COM 219350105 8,948,695 -206,447 -2.25 255,216 -16.11 0.0611
2019-08-13 2019-06-30 13F CORNING COM 219350105 9,155,142 -21,129 -0.23 304,225 0.16 0.0722
2019-05-13 2019-03-31 13F CORNING COM 219350105 9,176,271 -146,540 -1.57 303,735 7.84 0.0750
2019-02-12 2018-12-31 13F CORNING COM 219350105 9,322,811 76,977 0.83 281,643 -13.71 0.0790
2018-11-14 2018-09-30 13F CORNING COM 219350105 9,245,834 -278,787 -2.93 326,378 24.56 0.0799
2018-09-18 2018-06-30 13F/A-1 CORNING COM 219350105 9,524,621 -541,383 -5.38 262,023 -6.63 0.0665
2018-08-14 2018-06-30 13F CORNING COM 219350105 9,591,177 -474,827 263,854
2018-05-09 2018-03-31 13F CORNING COM 219350105 10,066,004 -440,015 -4.19 280,640 -16.50 0.0730
2018-02-14 2017-12-31 13F CORNING COM 219350105 10,506,019 -549,256 -4.97 336,088 1.61 0.0851
2017-11-13 2017-09-30 13F CORNING COM 219350105 11,055,275 573,553 5.47 330,774 5.02 0.0862
2017-08-11 2017-06-30 13F CORNING COM 219350105 10,481,722 -302,714 -2.81 314,976 8.17 0.0881
2017-05-12 2017-03-31 13F CORNING COM 219350105 10,784,436 -2,395 -0.02 291,179 11.22 0.0840
2017-02-13 2016-12-31 13F CORNING COM 219350105 10,786,831 -1,124,522 -9.44 261,796 -7.07 0.0803
2016-11-09 2016-09-30 13F CORNING COM 219350105 11,911,353 -413,138 -3.35 281,704 11.61 0.0877
2016-08-12 2016-06-30 13F CORNING COM 219350105 12,324,491 -579,811 -4.49 252,404 -5.18 0.0819
2016-08-19 2016-03-31 13F/A-1 CORNING COM 219350105 12,904,302 -522,990 -3.89 266,198 8.45 0.0883
2016-05-13 2016-03-31 13F Corning COMM 219350105 12,904,241 269,569
2016-02-12 2015-12-31 13F Corning COMM 219350105 13,427,292 -2,160,380 -13.86 245,451 -8.02 0.0814
2015-11-12 2015-09-30 13F Corning COMM 219350105 15,587,672 363,702 2.39 266,860 -11.16 0.0891
2015-08-13 2015-06-30 13F CORNING COM 219350105 15,223,970 -1,076,705 -6.61 300,369 -18.75 0.2036
2015-08-13 2015-06-30 13F Corning COMM 021935010 1,005,049 -15,295,626 19,830 0.0134
2015-05-14 2015-03-31 13F Corning COMM 219350105 16,300,675 -453,575 -2.71 369,699 -3.77 0.1112
2015-02-12 2014-12-31 13F Corning COM 219350105 16,754,250 -124,361 -0.74 384,176 17.69 0.1160
2014-11-13 2014-09-30 13F Corning COMM 219350105 16,878,611 107,056 0.64 326,434 -11.33 0.1025
2014-08-14 2014-06-30 13F CORNING com 219350105 16,771,555 -1,520,033 -8.31 368,136 -3.33 0.1147
2014-05-14 2014-03-31 13F CORNING COMM 219350105 18,291,588 -416,092 -2.22 380,831 14.24 0.1198
2014-02-21 2013-12-31 13F/A-1 CORNING COM 219350105 18,707,680 -344,528 -1.81 333,371 19.93 0.1069
2014-02-12 2013-12-31 13F CORNING COM 219350105 18,707,680 333,371
2013-11-13 2013-09-30 13F CORNING COM 219350105 19,052,208 -761,072 -3.84 277,972 -1.41 0.0979
2013-08-09 2013-06-30 13F CORNING COM 219350105 19,813,280 19,813,280 281,942 0.1022
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.