Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionEstabrook Capital Management
Latest Disclosed Ownership78,870 shares
Latest Disclosed Value $ 10,723,954
Estabrook Capital Management reports 24.67% decrease in ownership of GLW / Corning Incorporated

On May 14, 2026 - Estabrook Capital Management filed a 13F-HR form disclosing ownership of 78,870 shares of Corning Incorporated (MX:GLW) valued at $10,723,954 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 104,703 shares of Corning Incorporated. This represents a change in shares of -24.67% 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 COMMON 219350105 78,870 -25,833 -24.67 10,724 16.97 1.5649
2026-02-13 2025-12-31 13F CORNING COMMON 219350105 104,703 -7,725 -6.87 9,168 -0.60 1.3461
2025-11-10 2025-09-30 13F CORNING COMMON 219350105 112,428 -1,993 -1.74 9,222 53.27 1.3443
2025-08-13 2025-06-30 13F CORNING COMMON 219350105 114,421 -1,625 -1.40 6,017 13.27 0.9263
2025-05-14 2025-03-31 13F CORNING COMMON 219350105 116,046 -2,119 -1.79 5,313 -5.40 0.8583
2025-02-13 2024-12-31 13F CORNING COMMON 219350105 118,165 -950 -0.80 5,615 4.41 0.8657
2024-11-13 2024-09-30 13F CORNING COMMON 219350105 119,115 -9,196 -7.17 5,378 7.91 0.8019
2024-08-13 2024-06-30 13F CORNING COMMON 219350105 128,311 -53,097 -29.27 4,985 -16.64 0.7672
2024-05-14 2024-03-31 13F CORNING COMMON 219350105 181,408 -4,755 -2.55 5,979 5.49 0.9237
2024-02-13 2023-12-31 13F CORNING COMMON 219350105 186,163 -32,421 -14.83 5,669 -14.89 0.9259
2023-11-13 2023-09-30 13F CORNING COMMON 219350105 218,584 -18,161 -7.67 6,660 -19.71 1.1726
2023-08-11 2023-06-30 13F CORNING COMMON 219350105 236,745 -7,943 -3.25 8,296 -3.90 1.3825
2023-05-12 2023-03-31 13F CORNING COMMON 219350105 244,688 -6,016 -2.40 8,633 7.81 1.4976
2023-02-13 2022-12-31 13F CORNING COMMON 219350105 250,704 -2,315 -0.91 8,007 9.06 1.3766
2022-11-14 2022-09-30 13F CORNING COMMON 219350105 253,019 -2,131 -0.84 7,343 -8.67 1.3654
2022-08-15 2022-06-30 13F CORNING COMMON 219350105 255,150 -1,753 -0.68 8,040 -15.22 1.3782
2022-05-13 2022-03-31 13F CORNING COMMON 219350105 256,903 -2,607 -1.00 9,482 -1.85 1.3937
2022-02-11 2021-12-31 13F CORNING COMMON 219350105 259,510 -944 -0.36 9,662 1.66 1.3705
2021-11-15 2021-09-30 13F CORNING COMMON 219350105 260,454 -20,601 -7.33 9,504 -17.33 1.4965
2021-08-13 2021-06-30 13F CORNING COMMON 219350105 281,055 -20,526 -6.81 11,495 -12.39 1.7465
2021-05-14 2021-03-31 13F CORNING COMMON 219350105 301,581 -13,589 -4.31 13,122 15.64 2.0209
2021-02-12 2020-12-31 13F CORNING COMMON 219350105 315,170 -5,687 -1.77 11,346 9.12 1.8802
2020-11-13 2020-09-30 13F CORNING COMMON 219350105 320,857 -628 -0.20 10,399 24.89 1.9087
2020-08-13 2020-06-30 13F/A-1 CORNING COMMON 219350105 321,485 -14,946 -4.44 8,326 20.49 1.5822
2020-08-13 2020-06-30 13F CORNING COMMON 219350105 336,431 6,910
2020-05-14 2020-03-31 13F CORNING COMMON 219350105 336,431 -7,310 -2.13 6,910 -30.94 1.4542
2020-02-13 2019-12-31 13F CORNING COMMON 219350105 343,741 3,870 1.14 10,006 3.23 1.5048
2019-11-13 2019-09-30 13F CORNING COMMON 219350105 339,871 -4,401 -1.28 9,693 -15.27 1.6163
2019-08-13 2019-06-30 13F CORNING COMMON 219350105 344,272 -5,413 -1.55 11,440 -1.16 1.8730
2019-05-13 2019-03-31 13F CORNING COMMON 219350105 349,685 -4,053 -1.15 11,575 8.31 1.9183
2019-02-14 2018-12-31 13F CORNING COMMON 219350105 353,738 -21,773 -5.80 10,686 -19.38 1.9809
2018-11-13 2018-09-30 13F CORNING COMMON 219350105 375,511 -6,325 -1.66 13,256 26.19 2.0039
2018-08-14 2018-06-30 13F CORNING COMMON 219350105 381,836 -3,295 -0.86 10,504 -2.17 1.6554
2018-05-14 2018-03-31 13F CORNING COMMON 219350105 385,131 -2,538 -0.65 10,737 -13.42 1.6827
2018-02-12 2017-12-31 13F CORNING COMMON 219350105 387,669 -9,697 -2.44 12,402 4.31 1.8711
2017-11-09 2017-09-30 13F CORNING COMMON 219350105 397,366 14,054 3.67 11,889 3.22 1.8468
2017-08-10 2017-06-30 13F CORNING COMMON 219350105 383,312 3,372 0.89 11,519 12.28 1.8334
2017-05-12 2017-03-31 13F CORNING COMMON 219350105 379,940 -7,980 -2.06 10,258 8.97 1.6049
2017-02-14 2016-12-31 13F CORNING COMMON 219350105 387,920 -57,599 -12.93 9,415 -10.65 1.4752
2016-11-14 2016-09-30 13F CORNING COMMON 219350105 445,519 -38,494 -7.95 10,537 6.30 1.5480
2016-08-12 2016-06-30 13F CORNING COMMON 219350105 484,013 112,132 30.15 9,913 27.60 1.4848
2016-05-11 2016-03-31 13F CORNING COMMON 219350105 371,881 -13,294 -3.45 7,769 10.34 1.1501
2016-02-08 2015-12-31 13F CORNING COMMON 219350105 385,175 -19,142 -4.73 7,041 1.72 1.0184
2015-11-12 2015-09-30 13F CORNING COMMON 219350105 404,317 135,194 50.24 6,922 30.36 0.9989
2015-08-11 2015-06-30 13F CORNING COMMON 219350105 269,123 65,008 31.85 5,310 14.69 0.6571
2015-05-14 2015-03-31 13F CORNING COMMON 219350105 204,115 -4,280 -2.05 4,629 -3.12 0.5409
2015-02-11 2014-12-31 13F CORNING COMMON 219350105 208,395 14,084 7.25 4,778 27.18 0.5268
2014-11-13 2014-09-30 13F CORNING COMMON 219350105 194,311 17,211 9.72 3,758 -3.34 0.4022
2014-08-11 2014-06-30 13F CORNING COMMON 219350105 177,100 10,100 6.05 3,887 11.82 0.3990
2014-05-13 2014-03-31 13F CORNING COMMON 219350105 167,000 875 0.53 3,477 17.43 0.3539
2014-02-13 2013-12-31 13F CORNING COMMON 219350105 166,125 16,785 11.24 2,960 35.90 0.3044
2013-11-14 2013-09-30 13F CORNING COMMON 219350105 149,340 53,980 56.61 2,179 60.62 0.2378
2013-08-15 2013-06-30 13F CORNING COMMON 219350105 95,360 95,360 1,357 0.1437
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.