Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionNaples Global Advisors, Llc
Latest Disclosed Ownership206,033 shares
Latest Disclosed Value $ 28,014,309
Naples Global Advisors, Llc reports 3.55% decrease in ownership of GLW / Corning Incorporated

On April 20, 2026 - Naples Global Advisors, Llc filed a 13F-HR form disclosing ownership of 206,033 shares of Corning Incorporated (MX:GLW) valued at $28,014,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 213,627 shares of Corning Incorporated. This represents a change in shares of -3.55% 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)
2026-04-20 2026-03-31 13F CORNING COM 219350105 206,033 -7,594 -3.55 28,014 49.77 2.0441
2026-02-04 2025-12-31 13F CORNING COM 219350105 213,627 -13,893 -6.11 18,705 0.23 1.3977
2025-10-30 2025-09-30 13F CORNING COM 219350105 227,520 -6,627 -2.83 18,663 51.57 1.4534
2025-07-18 2025-06-30 13F CORNING COM 219350105 234,147 -2,583 -1.09 12,314 13.62 1.0595
2025-04-10 2025-03-31 13F CORNING COM 219350105 236,730 -373 -0.16 10,838 -3.82 1.0297
2025-01-29 2024-12-31 13F CORNING COM 219350105 237,103 -1,148 -0.48 11,267 4.74 1.0539
2024-10-24 2024-09-30 13F CORNING COM 219350105 238,251 2,312 0.98 10,757 17.36 1.0001
2024-07-18 2024-06-30 13F CORNING COM 219350105 235,939 300 0.13 9,166 18.03 0.9198
2024-04-29 2024-03-31 13F CORNING COM 219350105 235,639 131 0.06 7,767 8.30 0.7950
2024-01-11 2023-12-31 13F CORNING COM 219350105 235,508 2,380 1.02 7,171 0.96 0.7886
2023-10-16 2023-09-30 13F CORNING COM 219350105 233,128 4,300 1.88 7,103 -11.41 0.8608
2023-07-17 2023-06-30 13F CORNING COM 219350105 228,828 -395 -0.17 8,018 -0.84 0.9406
2023-04-17 2023-03-31 13F CORNING COM 219350105 229,223 685 0.30 8,087 10.78 1.0082
2023-04-17 2022-12-31 13F/A-1 CORNING COM 219350105 228,538 2,335 1.03 7,299 11.20 0.9276
2023-01-20 2022-12-31 13F CORNING COM 219350105 228,538 2,335 7,299 0.0009
2022-10-20 2022-09-30 13F CORNING COM 219350105 226,203 5,221 2.36 6,564 -5.73 0.9034
2022-08-11 2022-06-30 13F CORNING COM 219350105 220,982 5,835 2.71 6,963 -12.32 0.9036
2022-04-28 2022-03-31 13F CORNING COM 219350105 215,147 6,859 3.29 7,941 2.40 0.9169
2022-02-04 2021-12-31 13F CORNING COM 219350105 208,288 9,736 4.90 7,755 7.04 0.8987
2021-10-29 2021-09-30 13F/A-1 CORNING COM 219350105 198,552 5,393 2.79 7,245 -8.29 0.9515
2021-10-25 2021-09-30 13F CORNING COM 219350105 198,552 5,393 7,245 0.9470
2021-08-06 2021-06-30 13F CORNING COM 219350105 193,159 6,715 3.60 7,900 -2.61 1.0985
2021-05-10 2021-03-31 13F CORNING COM 219350105 186,444 2,906 1.58 8,112 22.78 1.2328
2021-02-08 2020-12-31 13F CORNING COM 219350105 183,538 665 0.36 6,607 11.47 1.1172
2020-10-26 2020-09-30 13F CORNING COM 219350105 182,873 218 0.12 5,927 25.28 1.1554
2020-08-04 2020-06-30 13F CORNING COM 219350105 182,655 6,484 3.68 4,731 30.73 1.0194
2020-04-27 2020-03-31 13F CORNING COM 219350105 176,171 24,625 16.25 3,619 -17.97 0.9485
2020-02-05 2019-12-31 13F Corning COM 219350105 151,546 -741 -0.49 4,412 1.59 0.9264
2019-10-28 2019-09-30 13F Corning COM 219350105 152,287 13,126 9.43 4,343 -6.08 1.0143
2019-07-10 2019-06-30 13F Corning COM 219350105 139,161 10,417 8.09 4,624 8.52 1.1250
2019-04-29 2019-03-31 13F Corning COM 219350105 128,744 1,981 1.56 4,261 10.76 1.0893
2019-02-01 2018-12-31 13F Corning COM 219350105 126,763 2,319 1.86 3,847 -12.43 1.0949
2018-11-13 2018-09-30 13F/A-1 Corning COM 219350105 124,444 0 0.00 4,393 28.34 1.1656
2018-11-13 2018-09-30 13F Corning COM 219350105 124,444 0 3,423
2018-07-23 2018-06-30 13F Corning COM 219350105 124,444 3,950 3.28 3,423 1.91 0.9643
2018-04-17 2018-03-31 13F Corning COM 219350105 120,494 15,075 14.30 3,359 -0.39 0.9965
2018-01-19 2017-12-31 13F Corning COM 219350105 105,419 3,925 3.87 3,372 11.03 0.9956
2017-10-16 2017-09-30 13F Corning COM 219350105 101,494 300 0.30 3,037 -0.13 1.0138
2017-07-25 2017-06-30 13F Corning COM 219350105 101,194 2,250 2.27 3,041 13.85 1.0786
2017-04-21 2017-03-31 13F Corning COM 219350105 98,944 2,425 2.51 2,671 14.00 0.9586
2017-01-30 2016-12-31 13F Corning COM 219350105 96,519 500 0.52 2,343 3.17 0.9122
2016-10-11 2016-09-30 13F Corning COM 219350105 96,019 4,700 5.15 2,271 21.44 0.8881
2016-07-13 2016-06-30 13F Corning COM 219350105 91,319 4,988 5.78 1,870 3.72 0.7654
2016-04-13 2016-03-31 13F Corning COM 219350105 86,331 -3,015 -3.37 1,803 10.41 0.7555
2016-01-25 2015-12-31 13F Corning COM 219350105 89,346 1,650 1.88 1,633 8.79 0.7912
2015-10-14 2015-09-30 13F Corning COM 219350105 87,696 3,250 3.85 1,501 -9.90 0.7712
2015-07-27 2015-06-30 13F Corning COM 219350105 84,446 10,060 13.52 1,666 -1.24 0.7996
2015-04-15 2015-03-31 13F Corning COM 219350105 74,386 3,800 5.38 1,687 4.20 0.8018
2015-01-22 2014-12-31 13F Corning COM 219350105 70,586 4,397 6.64 1,619 26.48 0.8564
2014-10-16 2014-09-30 13F Corning COM 219350105 66,189 975 1.50 1,280 -10.55 0.7543
2014-07-14 2014-06-30 13F Corning COM 219350105 65,214 5,145 8.57 1,431 14.39 0.8485
2014-04-07 2014-03-31 13F Corning COM 219350105 60,069 4,999 9.08 1,251 27.52 0.7651
2014-01-16 2013-12-31 13F Corning COM 219350105 55,070 55,070 981 0.6542
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.