Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionWebster Bank, N. A.
Latest Disclosed Ownership16,572 shares
Latest Disclosed Value $ 2,253,295
Webster Bank, N. A. reports 9.73% increase in ownership of GLW / Corning Incorporated

On April 17, 2026 - Webster Bank, N. A. filed a 13F-HR form disclosing ownership of 16,572 shares of Corning Incorporated (MX:GLW) valued at $2,253,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 15,103 shares of Corning Incorporated. This represents a change in shares of 9.73% 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)
2026-04-17 2026-03-31 13F CORNING COM 219350105 16,572 1,469 9.73 2,253 70.42 0.2045
2026-01-23 2025-12-31 13F CORNING COM 219350105 15,103 249 1.68 1,322 8.54 0.1240
2025-10-23 2025-09-30 13F CORNING COM 219350105 14,854 0 0.00 1,218 55.95 0.1172
2025-07-08 2025-06-30 13F CORNING COM 219350105 14,854 -10,100 -40.47 781 -31.61 0.0807
2025-04-04 2025-03-31 13F CORNING COM 219350105 24,954 -600 -2.35 1,142 -5.93 0.1255
2025-01-22 2024-12-31 13F CORNING COM 219350105 25,554 400 1.59 1,214 6.96 0.1304
2024-10-10 2024-09-30 13F CORNING COM 219350105 25,154 -100 -0.40 1,136 15.70 0.1208
2024-07-12 2024-06-30 13F CORNING COM 219350105 25,254 100 0.40 981 18.34 0.1076
2024-04-16 2024-03-31 13F CORNING COM 219350105 25,154 -500 -1.95 829 6.15 0.0926
2024-01-23 2023-12-31 13F CORNING COM 219350105 25,654 0 0.00 781 0.00 0.0957
2023-10-10 2023-09-30 13F CORNING COM 219350105 25,654 0 0.00 782 -13.03 0.1057
2023-07-13 2023-06-30 13F CORNING COM 219350105 25,654 -2,200 -7.90 899 -8.55 0.1162
2023-04-13 2023-03-31 13F CORNING COM 219350105 27,854 -300 -1.07 983 0.1281
2023-01-18 2022-12-31 13F CORNING COM 219350105 28,154 -2,500 -8.16 1 -100.00 0.1215
2022-10-24 2022-09-30 13F CORNING COM 219350105 30,654 0 0.00 890 -7.87 0.1290
2022-07-12 2022-06-30 13F CORNING COM 219350105 30,654 -27,654 -47.43 966 -55.13 0.1318
2022-04-13 2022-03-31 13F CORNING COM 219350105 58,308 27,654 90.21 2,153 88.53 0.1545
2022-01-12 2021-12-31 13F CORNING COM 219350105 30,654 -450 -1.45 1,142 0.62 0.1182
2021-10-12 2021-09-30 13F CORNING COM 219350105 31,104 -1,700 -5.18 1,135 -15.42 0.1268
2021-07-20 2021-06-30 13F CORNING COM 219350105 32,804 0 0.00 1,342 -6.02 0.1468
2021-05-07 2021-03-31 13F CORNING COM 219350105 32,804 0 0.00 1,428 20.91 0.1626
2021-01-07 2020-12-31 13F CORNING COM 219350105 32,804 -400 -1.20 1,181 9.76 0.1388
2020-10-22 2020-09-30 13F CORNING COM 219350105 33,204 0 0.00 1,076 25.12 0.1412
2020-07-09 2020-06-30 13F CORNING COM 219350105 33,204 -1,000 -2.92 860 22.33 0.1219
2020-04-21 2020-03-31 13F CORNING COM 219350105 34,204 0 0.00 703 -29.42 0.1168
2020-01-14 2019-12-31 13F CORNING COM 219350105 34,204 -625 -1.79 996 0.20 0.1272
2019-10-01 2019-09-30 13F CORNING COM 219350105 34,829 -1,425 -3.93 994 -17.51 0.1346
2019-07-11 2019-06-30 13F CORNING COM 219350105 36,254 -1,530 -4.05 1,205 -3.68 0.1659
2019-04-10 2019-03-31 13F Corning COM 219350105 37,784 0 0.00 1,251 9.54 0.1788
2019-01-09 2018-12-31 13F Corning COM 219350105 37,784 -300 -0.79 1,142 -15.03 0.1844
2018-10-12 2018-09-30 13F Corning COM 219350105 38,084 -3,150 -7.64 1,344 18.52 0.1873
2018-07-12 2018-06-30 13F Corning COM 219350105 41,234 0 0.00 1,134 -1.31 0.1638
2018-04-19 2018-03-31 13F Corning COM 219350105 41,234 -1,000 -2.37 1,149 -14.95 0.1659
2018-01-23 2017-12-31 13F Corning COM 219350105 42,234 -500 -1.17 1,351 5.63 0.1858
2017-10-12 2017-09-30 13F Corning COM 219350105 42,734 -1,604 -3.62 1,279 -3.98 0.1859
2017-07-12 2017-06-30 13F Corning COM 219350105 44,338 -75 -0.17 1,332 11.09 0.1972
2017-05-01 2017-03-31 13F Corning COM 219350105 44,413 0 0.00 1,199 11.22 0.1808
2017-02-15 2016-12-31 13F Corning COM 219350105 44,413 0 0.00 1,078 2.67 0.1576
2016-10-14 2016-09-30 13F CORNING COMMON STOCK 219350105 44,413 -900 -1.99 1,050 13.15 0.1528
2016-07-11 2016-06-30 13F CORNING COMMON STOCK 219350105 45,313 -7,290 -13.86 928 -15.56 0.1361
2016-04-12 2016-03-31 13F CORNING COMMON STOCK 219350105 52,603 -3,175 -5.69 1,099 7.75 0.1716
2016-01-13 2015-12-31 13F CORNING COMMON STOCK 219350105 55,778 -19,270 -25.68 1,020 -20.62 0.1637
2015-11-12 2015-09-30 13F CORNING COMMON STOCK 219350105 75,048 -30,484 -28.89 1,285 -38.28 0.2367
2015-07-09 2015-06-30 13F CORNING COMMON STOCK 219350105 105,532 -8,505 -7.46 2,082 -19.49 0.3485
2015-04-30 2015-03-31 13F CORNING COMMON STOCK 219350105 114,037 -29,220 -20.40 2,586 -21.25 0.4275
2015-01-15 2014-12-31 13F CORNING COMMON STOCK 219350105 143,257 -89,064 -38.34 3,284 -26.91 0.5508
2014-10-15 2014-09-30 13F CORNING COMMON STOCK 219350105 232,321 -17,625 -7.05 4,493 -18.10 0.7944
2014-07-09 2014-06-30 13F CORNING COMMON STOCK 219350105 249,946 -119,565 -32.36 5,486 -28.69 0.9467
2014-04-11 2014-03-31 13F CORNING COMMON STOCK 219350105 369,511 492 0.13 7,693 16.99 1.0628
2014-01-28 2013-12-31 13F CORNING COMMON STOCK 219350105 369,019 -4,226 -1.13 6,576 20.75 0.9205
2013-11-05 2013-09-30 13F CORNING COMMON STOCK 219350105 373,245 -890 -0.24 5,446 2.31 0.8384
2013-08-06 2013-06-30 13F CORNING COMMON STOCK 219350105 374,135 374,135 5,323 0.6714
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.