Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionRadnor Capital Management, LLC
Latest Disclosed Ownership48,482 shares
Latest Disclosed Value $ 6,592,098
Radnor Capital Management, LLC reports 3.33% decrease in ownership of GLW / Corning Incorporated

On April 15, 2026 - Radnor Capital Management, LLC filed a 13F-HR form disclosing ownership of 48,482 shares of Corning Incorporated (MX:GLW) valued at $6,592,098 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 50,153 shares of Corning Incorporated. This represents a change in shares of -3.33% 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.

Upgrade to unlock premium data and export to Excel .

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 48,482 -1,671 -3.33 6,592 50.13 0.9755
2026-02-06 2025-12-31 13F CORNING COM 219350105 50,153 3,976 8.61 4,391 15.95 0.6518
2025-10-21 2025-09-30 13F CORNING COM 219350105 46,177 2,152 4.89 3,788 189,250.00 0.5762
2025-07-09 2025-06-30 13F CORNING COM 219350105 44,025 285 0.65 2 0.00 0.3693
2025-04-11 2025-03-31 13F CORNING COM 219350105 43,740 1,450 3.43 2 0.00 0.3354
2025-01-14 2024-12-31 13F CORNING COM 219350105 42,290 655 1.57 2 100.00 0.3359
2024-10-30 2024-09-30 13F CORNING COM 219350105 41,635 41,635 2 0.2792
2024-07-12 2024-06-30 13F CORNING COM 219350105 0 -30,510 -100.00 0 -100.00
2024-04-11 2024-03-31 13F CORNING COM 219350105 30,510 -1,975 -6.08 1 0.1715
2024-01-11 2023-12-31 13F CORNING COM 219350105 32,485 -1,250 -3.71 1 -100.00 0.1844
2023-10-12 2023-09-30 13F CORNING COM 219350105 33,735 33,735 1 0.2045
2023-07-07 2023-06-30 13F CORNING COM 219350105 0 -25,535 -100.00 0 0.0000
2023-04-06 2023-03-31 13F CORNING COM 219350105 25,535 -4,124 -13.90 1 -100.00 0.2370
2023-01-09 2022-12-31 13F CORNING COM 219350105 29,659 0 0.00 1 -99.88 0.2466
2022-10-12 2022-09-30 13F CORNING COM 219350105 29,659 0 0.00 861 -7.91 0.2497
2022-07-11 2022-06-30 13F CORNING COM 219350105 29,659 175 0.59 935 -14.06 0.2557
2022-04-25 2022-03-31 13F CORNING COM 219350105 29,484 9,144 44.96 1,088 43.73 0.2730
2022-01-20 2021-12-31 13F CORNING COM 219350105 20,340 20,340 757 0.1869
2021-10-26 2021-09-30 13F CORNING COM 219350105 0 -11,140 -100.00 0 -100.00
2021-07-21 2021-06-30 13F CORNING COM 219350105 11,140 0 0.00 456 -5.98 0.1539
2021-04-26 2021-03-31 13F CORNING COM 219350105 11,140 0 0.00 485 20.95 0.1560
2021-01-13 2020-12-31 13F CORNING COM 219350105 11,140 0 0.00 401 11.08 0.1131
2020-11-02 2020-09-30 13F CORNING COM 219350105 11,140 500 4.70 361 32.23 0.1209
2020-07-28 2020-06-30 13F CORNING COM 219350105 10,640 875 8.96 273 35.82 0.0986
2020-04-07 2020-03-31 13F CORNING COM 219350105 9,765 0 0.00 201 -29.23 0.0825
2020-01-10 2019-12-31 13F CORNING COM 219350105 9,765 0 0.00 284 2.16 0.0880
2019-10-07 2019-09-30 13F CORNING COM 219350105 9,765 0 0.00 278 -14.20 0.0911
2019-07-18 2019-06-30 13F CORNING COM 219350105 9,765 0 0.00 324 0.31 0.1066
2019-04-25 2019-03-31 13F CORNING COM 219350105 9,765 0 0.00 323 9.49 0.1057
2019-01-16 2018-12-31 13F CORNING COM 219350105 9,765 0 0.00 295 -14.49 0.1065
2018-10-04 2018-09-30 13F CORNING COM 219350105 9,765 0 0.00 345 28.25 0.1097
2018-07-10 2018-06-30 13F Corning COM 219350105 9,765 0 0.00 269 -1.10 0.0997
2018-04-20 2018-03-31 13F CORNING COM 219350105 9,765 0 0.00 272 -12.82 0.0925
2018-02-02 2017-12-31 13F Corning COM 219350105 9,765 916 10.35 312 17.29 0.0998
2017-10-10 2017-09-30 13F Corning COM 219350105 8,849 0 0.00 266 0.00 0.0901
2017-08-09 2017-06-30 13F Corning COM 219350105 8,849 0 0.00 266 11.30 0.0901
2017-04-20 2017-03-31 13F CORNING COM 219350105 8,849 0 0.00 239 11.16 0.0807
2017-02-03 2016-12-31 13F CORNING COM 219350105 8,849 8,849 215 0.0736
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.