Corning Incorporated
US ˙ NYSE ˙ US2193501051

SecurityGLW / Corning Incorporated
InstitutionSei Investments Co
Latest Disclosed Ownership879,824 shares
Latest Disclosed Value $ 77,037,181
Sei Investments Co reports 11.19% decrease in ownership of GLW / Corning Incorporated

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 879,824 shares of Corning Incorporated (US:GLW) valued at $77,037,389 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 990,630 shares of Corning Incorporated. This represents a change in shares of -11.19% during the quarter. The current value of the position is $176,633,466 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)
2026-02-13 2025-12-31 13F CORNING COM 219350105 879,824 -110,806 -11.19 77,037 -5.20 0.0760
2025-11-13 2025-09-30 13F CORNING COM 219350105 990,630 617,623 165.58 81,261 314.25 0.0874
2025-08-14 2025-06-30 13F CORNING COM 219350105 373,007 78,145 26.50 19,616 45.33 0.0227
2025-05-14 2025-03-31 13F/A-1 CORNING COM 219350105 294,862 117,985 66.70 13,499 60.59 0.0174
2025-05-13 2025-03-31 13F CORNING COM 219350105 179,674 2,797 8,455 0.0092
2025-02-11 2024-12-31 13F CORNING COM 219350105 176,877 -75,126 -29.81 8,406 -26.12 0.0108
2024-11-12 2024-09-30 13F CORNING COM 219350105 252,003 76,890 43.91 11,378 67.24 0.0148
2024-08-13 2024-06-30 13F CORNING COM 219350105 175,113 -97,171 -35.69 6,803 -24.19 0.0096
2024-05-07 2024-03-31 13F CORNING COM 219350105 272,284 -137,129 -33.49 8,975 -28.01 0.0131
2024-02-14 2023-12-31 13F CORNING COM 219350105 409,413 13,708 3.46 12,466 3.39 0.0200
2023-11-14 2023-09-30 13F CORNING COM 219350105 395,705 6,975 1.79 12,057 -11.48 0.0217
2023-08-11 2023-06-30 13F CORNING COM 219350105 388,730 -55,476 -12.49 13,622 -13.08 0.0238
2023-05-12 2023-03-31 13F CORNING COM 219350105 444,206 47,348 11.93 15,672 23.64 0.0291
2023-02-10 2022-12-31 13F CORNING COM 219350105 396,858 111,896 39.27 12,676 53.28 0.0282
2022-11-14 2022-09-30 13F CORNING COM 219350105 284,962 -8,496 -2.90 8,269 -10.92 0.0184
2022-08-15 2022-06-30 13F CORNING COM 219350105 293,458 36,501 14.21 9,283 -2.50 0.0200
2022-05-13 2022-03-31 13F CORNING COM 219350105 256,957 -19,042 -6.90 9,521 -7.54 0.0191
2022-02-14 2021-12-31 13F CORNING COM 219350105 275,999 -149,978 -35.21 10,297 -33.82 0.0193
2021-11-12 2021-09-30 13F CORNING COM 219350105 425,977 4,690 1.11 15,559 -9.71 0.0326
2021-08-06 2021-06-30 13F CORNING COM 219350105 421,287 164,038 63.77 17,232 56.34 0.0382
2021-05-12 2021-03-31 13F CORNING COM 219350105 257,249 49,070 23.57 11,022 47.83 0.0278
2021-02-08 2020-12-31 13F CORNING COM 219350105 208,179 19,430 10.29 7,456 23.42 0.0193
2020-12-04 2020-09-30 13F/A-1 CORNING COM 219350105 188,749 62,361 49.34 6,041 91.29 0.0175
2020-11-06 2020-09-30 13F CORNING COM 219350105 209,283 82,895 6,707 16,148.9648
2020-08-17 2020-06-30 13F/A-1 CORNING COM 219350105 126,388 29,156 29.99 3,158 69.78 0.0098
2020-08-11 2020-06-30 13F CORNING COM 219350105 99,527 2,295 2,664 7,226.2418
2020-05-14 2020-03-31 13F CORNING COM 219350105 97,232 -69,474 -41.67 1,860 -61.74 0.0068
2020-02-06 2019-12-31 13F CORNING COM 219350105 166,706 -31,776 -16.01 4,862 -13.79 0.0145
2019-11-12 2019-09-30 13F CORNING COM 219350105 198,482 12,556 6.75 5,640 -9.18 0.0144
2019-08-14 2019-06-30 13F CORNING COM 219350105 185,926 13,734 7.98 6,210 8.93 0.0203
2019-05-15 2019-03-31 13F CORNING COM 219350105 172,192 11,928 7.44 5,701 11.65 0.0191
2019-02-13 2018-12-31 13F CORNING COM 219350105 160,264 27,060 20.31 5,106 8.64 0.0182
2018-11-08 2018-09-30 13F CORNING COM 219350105 133,204 -203,026 -60.38 4,700 -49.19 0.0170
2018-08-03 2018-06-30 13F CORNING COM 219350105 336,230 17,023 5.33 9,251 3.96 0.0314
2018-05-11 2018-03-31 13F CORNING COM 219350105 319,207 -317,279 -49.85 8,899 -56.30 0.0341
2018-02-08 2017-12-31 13F CORNING COM 219350105 636,486 89,825 16.43 20,362 24.49 0.0707
2017-11-06 2017-09-30 13F CORNING COM 219350105 546,661 99,318 22.20 16,356 21.68 0.0581
2017-07-31 2017-06-30 13F CORNING COM 219350105 447,343 -30,717 -6.43 13,442 4.14 0.0536
2017-05-05 2017-03-31 13F CORNING COM 219350105 478,060 42,492 9.76 12,908 22.11 0.0566
2017-02-02 2016-12-31 13F CORNING COM 219350105 435,568 -32,149 -6.87 10,571 -4.43 0.0512
2016-11-04 2016-09-30 13F CORNING COM 219350105 467,717 66,019 16.43 11,061 34.45 0.0562
2016-08-11 2016-06-30 13F CORNING COM 219350105 401,698 -21,030 -4.97 8,227 -6.84 0.0493
2016-05-10 2016-03-31 13F/A-1 CORNING COM 219350105 422,728 -5,995 -1.40 8,831 12.68 0.0550
2016-02-03 2015-12-31 13F CORNING COM 219350105 428,723 381,304 804.12 7,837 866.34 0.0478
2015-11-02 2015-09-30 13F/A-1 CORNING COM 219350105 47,419 -24,291 -33.87 811 -42.69 0.0074
2015-10-30 2015-09-30 13F CORNING COM 219350105 47,419 813
2015-08-07 2015-06-30 13F/A-1 CORNING COM 219350105 71,710 24,238 51.06 1,415 31.87 0.0128
2015-08-04 2015-06-30 13F CORNING COM 219350105 71,710 24,238 1,415 0.0128
2015-05-14 2015-03-31 13F/A-1 CORNING COM 219350105 47,472 -6,574 -12.16 1,073 -13.40 0.0093
2015-05-01 2015-03-31 13F CORNERSTONE ONDEMAND NOTE 1.500% 7/0 219350105 47,472 1,073
2015-02-10 2014-12-31 13F CORNING COM 219350105 54,046 54,046 1,239 0.0110
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.