Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionDiligent Investors, LLC
Latest Disclosed Ownership24,613 shares
Latest Disclosed Value $ 3,346,636
Diligent Investors, LLC reports 0.21% increase in ownership of GLW / Corning Incorporated

On April 15, 2026 - Diligent Investors, LLC filed a 13F-HR form disclosing ownership of 24,613 shares of Corning Incorporated (MX:GLW) valued at $3,346,636 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 24,561 shares of Corning Incorporated. This represents a change in shares of 0.21% 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)
2026-04-15 2026-03-31 13F CORNING COM 219350105 24,613 52 0.21 3,347 55.63 0.8290
2026-01-23 2025-12-31 13F CORNING COM 219350105 24,561 -497 -1.98 2,151 4.62 0.5289
2025-11-14 2025-09-30 13F CORNING COM 219350105 25,058 -547 -2.14 2,056 52.67 0.5196
2025-07-22 2025-06-30 13F CORNING COM 219350105 25,605 5 0.02 1,347 14.94 0.3190
2025-04-10 2025-03-31 13F CORNING COM 219350105 25,600 6 0.02 1,172 -3.70 0.2852
2025-02-14 2024-12-31 13F CORNING COM 219350105 25,594 5 0.02 1,216 5.28 0.2789
2024-11-01 2024-09-30 13F CORNING COM 219350105 25,589 556 2.22 1,155 18.83 0.2681
2024-07-15 2024-06-30 13F CORNING COM 219350105 25,033 -711 -2.76 973 14.62 0.2409
2024-05-06 2024-03-31 13F CORNING COM 219350105 25,744 -72 -0.28 849 7.89 0.2128
2024-01-10 2023-12-31 13F CORNING COM 219350105 25,816 -300 -1.15 786 -1.13 0.2160
2023-11-06 2023-09-30 13F CORNING COM 219350105 26,116 -392 -1.48 796 -14.33 0.2430
2023-07-24 2023-06-30 13F CORNING COM 219350105 26,508 0 0.00 929 -0.75 0.2745
2023-05-11 2023-03-31 13F CORNING COM 219350105 26,508 0 0.00 935 10.52 0.2887
2023-01-20 2022-12-31 13F CORNING COM 219350105 26,508 117 0.44 847 10.44 0.2764
2022-10-14 2022-09-30 13F CORNING COM 219350105 26,391 0 0.00 766 -7.93 0.2732
2022-07-13 2022-06-30 13F CORNING COM 219350105 26,391 0 0.00 832 -14.58 0.2847
2022-04-26 2022-03-31 13F CORNING COM 219350105 26,391 -518 -1.93 974 -2.79 0.2826
2022-01-21 2021-12-31 13F CORNING COM 219350105 26,909 -1,033 -3.70 1,002 -12.34 0.2802
2021-10-13 2021-09-30 13F CORNING COM 219350105 27,942 0 0.00 1,143 0.00 0.3887
2021-08-12 2021-06-30 13F CORNING COM 219350105 27,942 -800 -2.78 1,143 -8.63 0.3880
2021-04-23 2021-03-31 13F CORNING COM 219350105 28,742 -400 -1.37 1,251 19.26 0.4563
2021-02-09 2020-12-31 13F CORNING COM 219350105 29,142 -20 -0.07 1,049 11.01 0.4213
2020-11-09 2020-09-30 13F CORNING COM 219350105 29,162 -200 -0.68 945 24.34 0.4311
2020-07-09 2020-06-30 13F CORNING COM 219350105 29,362 -100 -0.34 760 25.62 0.3723
2020-04-29 2020-03-31 13F CORNING COM 219350105 29,462 -3,000 -9.24 605 -35.98 0.3619
2020-01-13 2019-12-31 13F CORNING COM 219350105 32,462 -450 -1.37 945 0.64 0.4273
2019-10-22 2019-09-30 13F CORNING COM 219350105 32,912 -400 -1.20 939 -15.18 0.4587
2019-08-01 2019-06-30 13F CORNING COM 219350105 33,312 -923 -2.70 1,107 -2.29 0.5503
2019-05-10 2019-03-31 13F CORNING COM 219350105 34,235 -442 -1.27 1,133 8.11 0.6455
2019-01-17 2018-12-31 13F CORNING COM 219350105 34,677 -813 -2.29 1,048 -16.36 0.6875
2018-10-25 2018-09-30 13F CORNING COM 219350105 35,490 -700 -1.93 1,253 25.80 0.6878
2018-07-23 2018-06-30 13F CORNING COM 219350105 36,190 -564 -1.53 996 -2.83 0.6064
2018-04-23 2018-03-31 13F CORNING COM 219350105 36,754 -300 -0.81 1,025 -13.50 0.6172
2018-02-12 2017-12-31 13F CORNING COM 219350105 37,054 -108 -0.29 1,185 6.56 0.7551
2017-11-09 2017-09-30 13F CORNING COM 219350105 37,162 -200 -0.54 1,112 -0.98 0.8124
2017-08-11 2017-06-30 13F CORNING COM 219350105 37,362 400 1.08 1,123 12.30 0.7965
2017-05-15 2017-03-31 13F CORNING COM 219350105 36,962 0 0.00 1,000 11.48 0.7649
2017-02-13 2016-12-31 13F CORNING COM 219350105 36,962 -1,810 -4.67 897 -2.39 0.7119
2016-10-31 2016-09-30 13F CORNING COM 219350105 38,772 -508 -1.29 919 14.30 0.7445
2016-07-28 2016-06-30 13F CORNING COM 219350105 39,280 200 0.51 804 -1.47 0.7642
2016-05-09 2016-03-31 13F CORNING COM 219350105 39,080 -100 -0.26 816 13.97 0.8903
2016-02-02 2015-12-31 13F CORNING COM 219350105 39,180 -200 -0.51 716 5.29 0.8080
2015-11-04 2015-09-30 13F CORNING COM 219350105 39,380 1,000 2.61 680 -7.86 0.7295
2015-07-28 2015-06-30 13F CORNING COM 219350105 38,380 5,150 15.50 738 4.24 0.7725
2015-05-13 2015-03-31 13F CORNING COM 219350105 33,230 -700 -2.06 708 -14.29 0.7266
2015-02-17 2014-12-31 13F CORNING COM 219350105 33,930 33,930 826 0.8416
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.