Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionHolderness Investments Co
Latest Disclosed Ownership42,057 shares
Latest Disclosed Value $ 5,718,490
Holderness Investments Co reports 2.88% increase in ownership of GLW / Corning Incorporated

On May 12, 2026 - Holderness Investments Co filed a 13F-HR form disclosing ownership of 42,057 shares of Corning Incorporated (MX:GLW) valued at $5,718,490 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 40,880 shares of Corning Incorporated. This represents a change in shares of 2.88% 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)
2026-05-12 2026-03-31 13F CORNING COM 219350105 42,057 1,177 2.88 5,718 59.77 1.1484
2026-02-10 2025-12-31 13F CORNING COM 219350105 40,880 1,436 3.64 3,579 10.63 0.7281
2025-11-12 2025-09-30 13F CORNING COM 219350105 39,444 -3,449 -8.04 3,236 43.46 0.6604
2025-08-12 2025-06-30 13F CORNING COM 219350105 42,893 3,819 9.77 2,256 26.12 0.4852
2025-05-13 2025-03-31 13F CORNING COM 219350105 39,074 295 0.76 1,789 -2.93 0.4170
2025-02-11 2024-12-31 13F CORNING COM 219350105 38,779 -400 -1.02 1,843 4.19 0.4064
2024-11-12 2024-09-30 13F CORNING COM 219350105 39,179 779 2.03 1,769 18.58 0.3862
2024-08-13 2024-06-30 13F/A-1 CORNING COM 219350105 38,400 362 0.95 1,492 18.99 0.3520
2024-08-13 2024-06-30 13F CORNING COM 219350105 38,400 362 1,492 0.3520
2024-05-13 2024-03-31 13F CORNING COM 219350105 38,038 -485 -1.26 1,254 6.82 0.3065
2024-02-13 2023-12-31 13F CORNING COM 219350105 38,523 0 0.00 1,173 0.00 0.3220
2023-11-15 2023-09-30 13F CORNING COM 219350105 38,523 -1,190 -3.00 1,174 -15.67 0.4567
2023-08-15 2023-06-30 13F CORNING COM 219350105 39,713 -87 -0.22 1,392 -0.93 0.5141
2023-05-12 2023-03-31 13F CORNING COM 219350105 39,800 -25 -0.06 1,404 10.38 0.5613
2023-02-13 2022-12-31 13F CORNING COM 219350105 39,825 -200 -0.50 1,272 9.47 0.5483
2022-11-14 2022-09-30 13F CORNING COM 219350105 40,025 257 0.65 1,162 -7.26 0.5281
2022-08-15 2022-06-30 13F CORNING COM 219350105 39,768 -1,923 -4.61 1,253 -18.58 0.5230
2022-05-12 2022-03-31 13F CORNING COM 219350105 41,691 580 1.41 1,539 0.52 0.5130
2022-02-09 2021-12-31 13F CORNING COM 219350105 41,111 777 1.93 1,531 4.01 0.4521
2021-11-12 2021-09-30 13F CORNING COM 219350105 40,334 -429 -1.05 1,472 -11.70 0.4859
2021-08-09 2021-06-30 13F CORNING COM 219350105 40,763 119 0.29 1,667 -5.71 0.5506
2021-05-11 2021-03-31 13F CORNING COM 219350105 40,644 193 0.48 1,768 21.43 0.6349
2021-02-05 2020-12-31 13F CORNING COM 219350105 40,451 -1,812 -4.29 1,456 6.28 0.5648
2020-11-09 2020-09-30 13F CORNING COM 219350105 42,263 350 0.84 1,370 26.15 0.5653
2020-08-13 2020-06-30 13F CORNING COM 219350105 41,913 5,904 16.40 1,086 46.76 0.4834
2020-05-13 2020-03-31 13F CORNING COM 219350105 36,009 515 1.45 740 -28.36 0.4183
2020-02-05 2019-12-31 13F CORNING COM 219350105 35,494 -575 -1.59 1,033 0.39 0.4428
2019-11-01 2019-09-30 13F CORNING COM 219350105 36,069 0 0.00 1,029 -14.18 0.4789
2019-08-02 2019-06-30 13F CORNING COM 219350105 36,069 -700 -1.90 1,199 -1.48 0.5438
2019-05-20 2019-03-31 13F CORNING COM 219350105 36,769 -106 -0.29 1,217 9.25 0.5827
2019-02-13 2018-12-31 13F CORNING COM 219350105 36,875 -239 -0.64 1,114 -14.96 0.6090
2018-11-13 2018-09-30 13F CORNING COM 219350105 37,114 -242 -0.65 1,310 27.43 0.5901
2018-08-16 2018-06-30 13F CORNING COM 219350105 37,356 200 0.54 1,028 -0.77 0.4998
2018-05-10 2018-03-31 13F CORNING COM 219350105 37,156 -200 -0.54 1,036 -13.31 0.5118
2018-02-13 2017-12-31 13F CORNING COM 219350105 37,356 0 0.00 1,195 6.89 0.5870
2017-11-09 2017-09-30 13F CORNING COM 219350105 37,356 -1,450 -3.74 1,118 -4.12 0.5810
2017-08-14 2017-06-30 13F CORNING COM 219350105 38,806 -325 -0.83 1,166 10.31 0.6181
2017-05-08 2017-03-31 13F CORNING COM 219350105 39,131 -1,125 -2.79 1,057 8.19 0.5367
2017-02-03 2016-12-31 13F CORNING COM 219350105 40,256 -325 -0.80 977 1.77 0.8647
2016-11-14 2016-09-30 13F CORNING COM 219350105 40,581 -225 -0.55 960 14.83 0.9603
2016-08-12 2016-06-30 13F CORNING COM 219350105 40,806 -599 -1.45 836 -3.35 0.8417
2016-05-11 2016-03-31 13F CORNING COM 219350105 41,405 -58 -0.14 865 14.12 0.8250
2016-02-08 2015-12-31 13F CORNING COM 219350105 41,463 801 1.97 758 8.91 0.7507
2015-11-09 2015-09-30 13F CORNING COM 219350105 40,662 -490 -1.19 696 -14.29 0.7312
2015-08-14 2015-06-30 13F CORNING COM 219350105 41,152 -662 -1.58 812 -14.35 0.8291
2015-05-14 2015-03-31 13F CORNING COM 219350105 41,814 0 0.00 948 -1.04 0.9632
2015-02-13 2014-12-31 13F CORNING COM 219350105 41,814 41,814 958 0.9792
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.