Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionKentucky Retirement Systems
Latest Disclosed Ownership119,483 shares
Latest Disclosed Value $ 2,129
Kentucky Retirement Systems reports 143.75% increase in ownership of GLW / Corning Incorporated

On May 19, 2026 - Kentucky Retirement Systems filed a 13F-HR form disclosing ownership of 119,483 shares of Corning Incorporated (MX:GLW) valued at $2,129 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 49,019 shares of Corning Incorporated. This represents a change in shares of 143.75% 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)
2026-05-19 2026-03-31 13F CORNING COM 219350105 119,483 70,464 143.75 2 -99.95 0.1559
2026-02-10 2025-12-31 13F CORNING COM 219350105 49,019 0 0.00 4,292 6.74 0.1163
2025-11-13 2025-09-30 13F CORNING COM 219350105 49,019 -92 -0.19 4,021 55.73 0.1112
2025-08-20 2025-06-30 13F CORNING COM 219350105 49,111 -3,217 -6.15 2,583 7.81 0.0756
2025-04-22 2025-03-31 13F CORNING COM 219350105 52,328 -595 -1.12 2,396 -4.73 0.0730
2025-02-03 2024-12-31 13F CORNING COM 219350105 52,923 -729 -1.36 2,515 3.80 0.0741
2024-11-06 2024-09-30 13F CORNING COM 219350105 53,652 -4,445 -7.65 2,422 7.31 0.0714
2024-08-12 2024-06-30 13F CORNING COM 219350105 58,097 -216 -0.37 2,257 17.49 0.0654
2024-05-15 2024-03-31 13F CORNING COM 219350105 58,313 -3,124 -5.08 1,922 2.73 0.0574
2024-02-08 2023-12-31 13F CORNING COM 219350105 61,437 -1,387 -2.21 1,871 -2.30 0.0584
2023-10-12 2023-09-30 13F CORNING COM 219350105 62,824 1,307 2.12 1,914 95,600.00 0.0665
2023-08-07 2023-06-30 13F CORNING COM 219350105 61,517 1,329 2.21 2 0.00 0.0722
2023-05-10 2023-03-31 13F CORNING COM 219350105 60,188 374 0.63 2 100.00 0.0782
2023-02-06 2022-12-31 13F CORNING COM 219350105 59,814 261 0.44 2 -99.94 0.0753
2022-11-16 2022-09-30 13F CORNING COM 219350105 59,553 3,136 5.56 1,728 -2.81 0.0733
2022-08-08 2022-06-30 13F CORNING COM 219350105 56,417 8,803 18.49 1,778 1.20 0.0751
2022-05-09 2022-03-31 13F CORNING COM 219350105 47,614 849 1.82 1,757 0.92 0.0720
2022-02-04 2021-12-31 13F CORNING COM 219350105 46,765 1,925 4.29 1,741 6.42 0.0708
2021-11-17 2021-09-30 13F CORNING COM 219350105 44,840 -274 -0.61 1,636 -11.33 0.0770
2021-08-12 2021-06-30 13F CORNING COM 219350105 45,114 -698 -1.52 1,845 -7.43 0.0872
2021-05-14 2021-03-31 13F CORNING COM 219350105 45,812 -581 -1.25 1,993 19.34 0.0974
2021-02-11 2020-12-31 13F CORNING COM 219350105 46,393 2,046 4.61 1,670 16.21 0.0862
2020-11-12 2020-09-30 13F CORNING COM 219350105 44,347 2,093 4.95 1,437 31.35 0.0887
2020-08-12 2020-06-30 13F CORNING COM 219350105 42,254 -10,273 -19.56 1,094 1.39 0.0768
2020-05-01 2020-03-31 13F CORNING COM 219350105 52,527 12,960 32.75 1,079 -6.34 0.0738
2020-02-18 2019-12-31 13F CORNING COM 219350105 39,567 -446 -1.11 1,152 0.96 0.0839
2019-11-05 2019-09-30 13F CORNING COM 219350105 40,013 3,467 9.49 1,141 -6.01 0.0906
2019-08-07 2019-06-30 13F/A-1 CORNING COM 219350105 36,546 2,148 6.24 1,214 6.58 0.1070
2019-08-07 2019-06-30 13F CORNING COM 219350105 36,546 2,148 1,214
2019-05-22 2019-03-31 13F CORNING COM 219350105 34,398 -418 -1.20 1,139 8.27 0.1102
2019-02-25 2018-12-31 13F CORNING COM 219350105 34,816 322 0.93 1,052 -13.63 0.1153
2018-11-19 2018-09-30 13F/A-1 CORNING COM 219350105 34,494 -760 -2.16 1,218 25.57 0.1164
2018-11-16 2018-09-30 13F CORNING COM 219350105 119,483 84,229 2,129
2018-08-13 2018-06-30 13F CORNING COM 219350105 35,254 -10,100 -22.27 970 -23.26 0.0993
2018-05-07 2018-03-31 13F CORNING COM 219350105 45,354 -8,238 -15.37 1,264 -26.25 0.1077
2018-02-13 2017-12-31 13F CORNING COM 219350105 53,592 -2,911 -5.15 1,714 1.36 0.1221
2017-11-08 2017-09-30 13F CORNING COM 219350105 56,503 -2,488 -4.22 1,691 -4.62 0.1277
2017-08-18 2017-06-30 13F CORNING COM 219350105 58,991 -512 -0.86 1,773 10.33 0.1332
2017-05-24 2017-03-31 13F CORNING COM 219350105 59,503 -9,522 -13.80 1,607 -4.06 0.1237
2017-02-24 2016-12-31 13F CORNING COM 219350105 69,025 -10,222 -12.90 1,675 -10.62 0.1198
2016-11-30 2016-09-30 13F CORNING COM 219350105 79,247 -12,198 -13.34 1,874 0.05 0.1247
2016-09-12 2016-06-30 13F CORNING COM 219350105 91,445 -10,793 -10.56 1,873 -12.31 0.1212
2016-06-09 2016-03-31 13F CORNING COM 219350105 102,238 12,385 13.78 2,136 30.01 0.1296
2016-02-22 2015-12-31 13F CORNING COM 219350105 89,853 5,733 6.82 1,643 14.10 0.1210
2015-11-18 2015-09-30 13F CORNING COM 219350105 84,120 -800 -0.94 1,440 -14.03 0.1240
2015-08-26 2015-06-30 13F CORNING COM 219350105 84,920 -651 -0.76 1,675 -13.70 0.1363
2015-05-29 2015-03-31 13F CORNING COM 219350105 85,571 -9,717 -10.20 1,941 -11.17 0.1576
2015-03-04 2014-12-31 13F CORNING COM 219350105 95,288 -5,150 -5.13 2,185 12.51 0.1611
2014-12-12 2014-09-30 13F CORNING COM 219350105 100,438 -14,958 -12.96 1,942 -19.18 0.1425
2014-05-22 2014-03-31 13F CORNING COM 219350105 115,396 -4,087 -3.42 2,403 12.87 0.1736
2014-02-13 2013-12-31 13F CORNING COM 219350105 119,483 -1,822 -1.50 2,129 20.28 0.1559
2013-11-15 2013-09-30 13F CORNING COM 219350105 121,305 121,305 1,770 0.1426
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.