Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionRiver Road Asset Management, LLC
Latest Disclosed Ownership20,703 shares
Latest Disclosed Value $ 2,814,987
River Road Asset Management, LLC reports 37.44% decrease in ownership of GLW / Corning Incorporated

On April 30, 2026 - River Road Asset Management, LLC filed a 13F-HR form disclosing ownership of 20,703 shares of Corning Incorporated (MX:GLW) valued at $2,814,987 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 24, 2026 disclosing 33,095 shares of Corning Incorporated. This represents a change in shares of -37.44% 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)
2026-04-30 2026-03-31 13F Corning COM 219350105 20,703 -12,392 -37.44 2,815 -2.87 0.0319
2026-02-24 2025-12-31 13F Corning COM 219350105 33,095 -31,267 -48.58 2,898 -45.12 0.0318
2025-11-12 2025-09-30 13F Corning COM 219350105 64,362 -104,095 -61.79 5,280 -50.45 0.0592
2025-08-13 2025-06-30 13F Corning COM 219350105 168,457 5,426 3.33 10,653 42.74 0.1353
2025-05-13 2025-03-31 13F Corning COM 219350105 163,031 -168,080 -50.76 7,464 -52.57 0.1015
2025-02-07 2024-12-31 13F Corning COM 219350105 331,111 -196,788 -37.28 15,734 -33.99 0.2092
2024-10-30 2024-09-30 13F Corning COM 219350105 527,899 -507,460 -49.01 23,835 -40.75 0.3117
2024-07-19 2024-06-30 13F Corning COM 219350105 1,035,359 -28,696 -2.70 40,224 14.69 0.5772
2024-04-26 2024-03-31 13F Corning COM 219350105 1,064,055 -148,790 -12.27 35,071 -5.04 0.4739
2024-01-31 2023-12-31 13F Corning COM 219350105 1,212,845 -249,570 -17.07 36,931 -17.12 0.5128
2023-11-13 2023-09-30 13F Corning COM 219350105 1,462,415 -11,979 -0.81 44,560 -13.75 0.6344
2023-07-20 2023-06-30 13F Corning COM 219350105 1,474,394 -102,039 -6.47 51,663 -7.11 0.7126
2023-04-27 2023-03-31 13F Corning COM 219350105 1,576,433 127,145 8.77 55,617 20.15 0.7581
2023-02-01 2022-12-31 13F Corning COM 219350105 1,449,288 50,348 3.60 46,290 14.02 0.6341
2022-11-04 2022-09-30 13F Corning COM 219350105 1,398,940 532,737 61.50 40,597 48.74 0.6046
2022-07-20 2022-06-30 13F Corning COM 219350105 866,203 -14,295 -1.62 27,294 -16.02 0.3828
2022-05-12 2022-03-31 13F Corning COM 219350105 880,498 -90,415 -9.31 32,499 -10.09 0.3590
2022-02-01 2021-12-31 13F Corning COM 219350105 970,913 -90,404 -8.52 36,147 -6.66 0.3848
2021-11-12 2021-09-30 13F Corning COM 219350105 1,061,317 -79,102 -6.94 38,727 -16.97 0.4284
2021-08-10 2021-06-30 13F Corning COM 219350105 1,140,419 -287,015 -20.11 46,643 -24.90 0.5009
2021-05-12 2021-03-31 13F Corning COM 219350105 1,427,434 -116,381 -7.54 62,108 11.75 0.7512
2021-02-10 2020-12-31 13F Corning COM 219350105 1,543,815 -465,859 -23.18 55,577 -14.67 0.7883
2020-11-09 2020-09-30 13F Corning COM 219350105 2,009,674 -1,811,663 -47.41 65,134 -34.19 1.0627
2020-08-12 2020-06-30 13F Corning COM 219350105 3,821,337 1,582,245 70.66 98,973 115.20 1.7026
2020-05-14 2020-03-31 13F Corning COM 219350105 2,239,092 -119,950 -5.08 45,991 -33.03 1.0287
2020-02-12 2019-12-31 13F Corning COM 219350105 2,359,042 314,913 15.41 68,672 17.79 1.0833
2019-11-05 2019-09-30 13F Corning COM 219350105 2,044,129 10,913 0.54 58,299 -13.71 1.1060
2019-08-12 2019-06-30 13F Corning COM 219350105 2,033,216 -144,612 -6.64 67,564 -6.27 1.3136
2019-05-02 2019-03-31 13F Corning COM 219350105 2,177,828 -79,784 -3.53 72,086 5.69 1.6097
2019-02-06 2018-12-31 13F Corning COM 219350105 2,257,612 -226,141 -9.10 68,202 -22.21 1.6760
2018-11-01 2018-09-30 13F Corning COM 219350105 2,483,753 -227,134 -8.38 87,676 17.56 1.8214
2018-07-25 2018-06-30 13F Corning COM 219350105 2,710,887 -233,578 -7.93 74,577 -9.15 1.5615
2018-05-04 2018-03-31 13F Corning COM 219350105 2,944,465 -209,176 -6.63 82,092 -18.63 1.6673
2018-02-06 2017-12-31 13F Corning COM 219350105 3,153,641 -65,978 -2.05 100,885 4.73 1.9144
2017-11-03 2017-09-30 13F Corning COM 219350105 3,219,619 -68,561 -2.09 96,331 -2.51 1.8890
2017-08-08 2017-06-30 13F Corning COM 219350105 3,288,180 -79,372 -2.36 98,810 8.67 1.9102
2017-04-25 2017-03-31 13F Corning COM 219350105 3,367,552 -94,686 -2.73 90,924 8.21 1.7205
2017-01-12 2016-12-31 13F Corning COM 219350105 3,462,238 70,052 2.07 84,029 4.74 1.6115
2016-10-27 2016-09-30 13F Corning COM 219350105 3,392,186 48,009 1.44 80,225 17.14 1.6526
2016-08-04 2016-06-30 13F Corning COM 219350105 3,344,177 -978,055 -22.63 68,489 -24.15 1.4541
2016-05-13 2016-03-31 13F Corning COM 219350105 4,322,232 841,338 24.17 90,291 41.90 1.6195
2016-02-11 2015-12-31 13F Corning COM 219350105 3,480,894 3,480,894 0.00 63,631 1.1031
2014-11-13 2014-09-30 13F Corning COM 219350105 0 -4,647,460 -100.00 0 -100.00
2014-08-08 2014-06-30 13F Corning COM 219350105 4,647,460 -5,054,609 -52.10 102,012 -49.50 1.3501
2014-05-12 2014-03-31 13F Corning COM 219350105 9,702,069 817,764 9.20 201,997 27.59 2.1887
2014-02-11 2013-12-31 13F Corning COM 219350105 8,884,305 1,078,272 13.81 158,318 39.01 1.7178
2013-11-14 2013-09-30 13F Corning COM 219350105 7,806,033 1,328,145 20.50 113,890 23.55 1.4076
2013-08-09 2013-06-30 13F Corning COM 219350105 6,477,888 6,477,888 92,180 1.1451
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.