Corning Incorporated
US ˙ NYSE ˙ US2193501051

SecurityGLW / Corning Incorporated
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership4,244,624 shares
Latest Disclosed Value $ 576,910,733
Dimensional Fund Advisors Lp reports 30.53% decrease in ownership of GLW / Corning Incorporated

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 4,244,624 shares of Corning Incorporated (US:GLW) valued at $577,141,525 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 6,110,225 shares of Corning Incorporated. This represents a change in shares of -30.53% during the quarter. The current value of the position is $852,150,714 USD.

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)
2026-05-07 2026-03-31 13F CORNING COM 219350105 4,244,624 -1,865,601 -30.53 576,911 7.80 0.1198
2026-02-12 2025-12-31 13F CORNING COM 219350105 6,110,225 -1,523,907 -19.96 535,143 -14.52 0.1123
2025-11-12 2025-09-30 13F CORNING COM 219350105 7,634,132 -1,185,967 -13.45 626,054 34.98 0.1343
2025-08-12 2025-06-30 13F CORNING COM 219350105 8,820,099 -500,145 -5.37 463,808 8.71 0.1074
2025-05-13 2025-03-31 13F CORNING COM 219350105 9,320,244 -480,329 -4.90 426,640 -8.39 0.1060
2025-02-13 2024-12-31 13F CORNING COM 219350105 9,800,573 78,497 0.81 465,723 6.11 0.1119
2024-11-07 2024-09-30 13F CORNING COM 219350105 9,722,076 -620,873 -6.00 438,923 9.23 0.1065
2024-08-09 2024-06-30 13F CORNING COM 219350105 10,342,949 426,864 4.30 401,826 22.94 0.1050
2024-05-10 2024-03-31 13F CORNING COM 219350105 9,916,085 193,979 2.00 326,834 10.40 0.0885
2024-02-07 2023-12-31 13F CORNING COM 219350105 9,722,106 146,807 1.53 296,054 1.47 0.0864
2023-11-09 2023-09-30 13F CORNING COM 219350105 9,575,299 111,577 1.18 291,761 -12.01 0.0957
2023-08-09 2023-06-30 13F CORNING COM 219350105 9,463,722 90,203 0.96 331,597 0.28 0.1057
2023-05-12 2023-03-31 13F CORNING COM 219350105 9,373,519 59,788 0.64 330,669 111,236.36 0.1114
2023-02-09 2022-12-31 13F CORNING COM 219350105 9,313,731 -17,954 -0.19 297 -99.89 0.0879
2022-11-10 2022-09-30 13F CORNING COM 219350105 9,331,685 62,417 0.67 270,858 -7.28 0.1040
2022-08-12 2022-06-30 13F CORNING COM 219350105 9,269,268 34,880 0.38 292,109 -14.31 0.1048
2022-05-13 2022-03-31 13F CORNING COM 219350105 9,234,388 90,882 0.99 340,891 0.14 0.1050
2022-02-09 2021-12-31 13F CORNING COM 219350105 9,143,506 113,290 1.25 340,404 3.29 0.1029
2021-11-12 2021-09-30 13F CORNING COM 219350105 9,030,216 90,879 1.02 329,566 -9.86 0.1062
2021-08-12 2021-06-30 13F CORNING COM 219350105 8,939,337 94,310 1.07 365,608 -5.00 0.1158
2021-05-14 2021-03-31 13F CORNING COM 219350105 8,845,027 -8,239 -0.09 384,856 20.75 0.1273
2021-03-08 2020-12-31 13F/A-2 CORNING COM 219350105 8,853,266 -79,786 -0.89 318,719 10.10 0.1151
2021-02-11 2020-12-31 13F CORNING COM 219350105 8,853,266 -79,786 318,719 115,104.3620
2020-11-12 2020-09-30 13F CORNING COM 219350105 8,933,052 -267,116 -2.90 289,470 21.49 0.1228
2020-08-13 2020-06-30 13F CORNING COM 219350105 9,200,168 5,781 0.06 238,258 26.12 0.1047
2020-05-14 2020-03-31 13F CORNING COM 219350105 9,194,387 282,701 3.17 188,911 -27.18 0.0984
2020-02-14 2019-12-31 13F CORNING COM 219350105 8,911,686 282,034 3.27 259,410 5.40 0.0945
2019-11-12 2019-09-30 13F CORNING COM 219350105 8,629,652 59,483 0.69 246,110 -13.58 0.0956
2019-08-13 2019-06-30 13F CORNING COM 219350105 8,570,169 103,453 1.22 284,799 1.63 0.1106
2019-08-12 2019-03-31 13F/A-2 CORNING COM 219350105 8,466,716 49,520 0.59 280,243 10.22 0.1116
2019-05-10 2019-03-31 13F CORNING COM 219350105 8,466,716 49,520 280,243
2019-02-26 2018-12-31 13F/A-1 CORNING COM 219350105 8,417,196 190,145 2.31 254,263 -12.45 0.1152
2019-02-13 2018-12-31 13F CORNING COM 219350105 8,417,196 190,145 254,263
2018-11-13 2018-09-30 13F CORNING COM 219350105 8,227,051 214,078 2.67 290,419 31.77 0.1105
2018-08-10 2018-06-30 13F CORNING COM 219350105 8,012,973 -29,830 -0.37 220,396 -1.71 0.0879
2018-05-11 2018-03-31 13F CORNING COM 219350105 8,042,803 -70,611 -0.87 224,233 -13.62 0.0935
2018-02-12 2017-12-31 13F CORNING COM 219350105 8,113,414 22,707 0.28 259,590 7.23 0.1076
2017-11-13 2017-09-30 13F CORNING COM 219350105 8,090,707 56,973 0.71 242,077 0.26 0.1058
2017-08-11 2017-06-30 13F CORNING COM 219350105 8,033,734 84,743 1.07 241,442 12.48 0.1115
2017-05-12 2017-03-31 13F CORNING COM 219350105 7,948,991 53,440 0.68 214,656 12.01 0.1026
2017-02-09 2016-12-31 13F CORNING COM 219350105 7,895,551 -30,158 -0.38 191,641 2.24 0.0957
2016-11-10 2016-09-30 13F CORNING COM 219350105 7,925,709 38,065 0.48 187,436 16.06 0.1013
2016-08-09 2016-06-30 13F CORNING COM 219350105 7,887,644 -116,911 -1.46 161,501 -3.41 0.0929
2016-05-13 2016-03-31 13F CORNING COM 219350105 8,004,555 -95,711 -1.18 167,211 12.92 0.1001
2016-02-10 2015-12-31 13F CORNING COM 219350105 8,100,266 -144,794 -1.76 148,085 4.92 0.0923
2015-11-13 2015-09-30 13F CORNING COM 219350105 8,245,060 -51,931 -0.63 141,140 -13.78 0.0926
2015-08-14 2015-06-30 13F CORNING COM 219350105 8,296,991 -171,062 -2.02 163,705 -14.77 0.1002
2015-05-14 2015-03-31 13F CORNING COM 219350105 8,468,053 -613,695 -6.76 192,080 -7.77 0.1213
2015-02-06 2014-12-31 13F CORNING COM 219350105 9,081,748 -728,996 -7.43 208,272 9.75 0.1368
2014-11-13 2014-09-30 13F CORNING COM 219350105 9,810,744 -1,124,247 -10.28 189,765 -20.94 0.1345
2014-08-08 2014-06-30 13F CORNING COM 219350105 10,934,991 -90,158 -0.82 240,023 4.58 0.1668
2014-05-14 2014-03-31 13F CORNING COM 219350105 11,025,149 57,660 0.53 229,511 17.43 0.1715
2014-02-12 2013-12-31 13F CORNING COM 219350105 10,967,489 675,192 6.56 195,437 30.15 0.1523
2013-11-13 2013-09-30 13F CORNING COM 219350105 10,292,297 417,387 4.23 150,168 6.86 0.1300
2013-08-15 2013-06-30 13F CORNING COM 219350105 9,874,910 9,874,910 140,530 0.1323
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.