Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership6,948,080 shares
Latest Disclosed Value $ 957,046,302
Ameriprise Financial Inc reports 30.32% decrease in ownership of GLW / Corning Incorporated

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 6,948,080 shares of Corning Incorporated (MX:GLW) valued at $957,046,302 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 9,971,363 shares of Corning Incorporated. This represents a change in shares of -30.32% 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)
2026-05-15 2026-03-31 13F CORNING COM 219350105 6,948,080 -3,023,283 -30.32 957,046 9.45 0.0410
2026-02-17 2025-12-31 13F CORNING COM 219350105 9,971,363 -636,764 -6.00 874,401 -0.12 0.1976
2025-11-14 2025-09-30 13F CORNING COM 219350105 10,608,127 -3,155,021 -22.92 875,429 20.84 0.2011
2025-08-14 2025-06-30 13F CORNING COM 219350105 13,763,148 1,036,988 8.15 724,432 24.47 0.1786
2025-05-14 2025-03-31 13F CORNING COM 219350105 12,726,160 -757,211 -5.62 582,002 -9.23 0.1571
2025-02-14 2024-12-31 13F CORNING COM 219350105 13,483,371 -184,401 -1.35 641,187 3.88 0.1645
2024-11-14 2024-09-30 13F CORNING COM 219350105 13,667,772 -1,242,883 -8.34 617,262 6.33 0.1583
2024-08-14 2024-06-30 13F CORNING COM 219350105 14,910,655 -2,559,218 -14.65 580,505 0.79 0.1571
2024-05-15 2024-03-31 13F CORNING COM 219350105 17,469,873 -472,300 -2.63 575,935 5.52 0.1585
2024-02-14 2023-12-31 13F CORNING COM 219350105 17,942,173 327,095 1.86 545,823 1.81 0.1634
2023-11-14 2023-09-30 13F CORNING COM 219350105 17,615,078 2,301,745 15.03 536,114 -0.09 0.1760
2023-08-14 2023-06-30 13F CORNING COM 219350105 15,313,333 -640,447 -4.01 536,610 -4.73 0.1682
2023-05-22 2023-03-31 13F/A-1 CORNING COM 219350105 15,953,780 741,788 4.88 563,232 15.95 0.1847
2023-05-15 2023-03-31 13F CORE & MAIN INC- COM 219350105 15,953,780 741,788 563,232 0.0341
2023-02-14 2022-12-31 13F CORNING COM 219350105 15,211,992 288,806 1.94 485,761 12.17 0.1665
2022-11-14 2022-09-30 13F CORNING COM 219350105 14,923,186 -46,723 -0.31 433,042 -8.19 0.1601
2022-08-15 2022-06-30 13F CORNING COM 219350105 14,969,909 374,210 2.56 471,671 -12.40 0.1645
2022-05-16 2022-03-31 13F CORNING COM 219350105 14,595,699 -600,156 -3.95 538,415 -4.71 0.1589
2022-02-14 2021-12-31 13F CORNING COM 219350105 15,195,855 275,394 1.85 565,046 3.78 0.1563
2021-11-15 2021-09-30 13F CORNING COM 219350105 14,920,461 3,426,944 29.82 544,466 15.25 0.1739
2021-08-16 2021-06-30 13F CORNING COM 219350105 11,493,517 -539,151 -4.48 472,436 -10.15 0.1461
2021-05-17 2021-03-31 13F CORNING COM 219350105 12,032,668 574,661 5.02 525,810 27.29 0.1748
2021-02-12 2020-12-31 13F CORNING COM 219350105 11,458,007 1,137,396 11.02 413,084 23.44 0.1465
2020-11-16 2020-09-30 13F CORNING COM 219350105 10,320,611 -4,850,615 -31.97 334,652 -14.94 0.1361
2020-08-14 2020-06-30 13F CORNING COM 219350105 15,171,226 -2,619,221 -14.72 393,422 7.72 0.1685
2020-05-15 2020-03-31 13F CORNING COM 219350105 17,790,447 -1,676,928 -8.61 365,234 -35.53 0.1917
2020-02-14 2019-12-31 13F CORNING COM 219350105 19,467,375 2,025,795 11.61 566,503 13.91 0.2355
2019-11-14 2019-09-30 13F CORNING COM 219350105 17,441,580 3,156,666 22.10 497,325 4.76 0.2229
2019-08-14 2019-06-30 13F CORNING COM 219350105 14,284,914 5,865,898 69.67 474,723 70.36 0.2126
2019-05-15 2019-03-31 13F CORNING COM 219350105 8,419,016 -418,747 -4.74 278,663 4.41 0.1282
2019-02-14 2018-12-31 13F CORNING COM 219350105 8,837,763 -1,793,916 -16.87 266,882 -28.89 0.1335
2018-11-14 2018-09-30 13F CORNING COM 219350105 10,631,679 -153,522 -1.42 375,324 26.57 0.1312
2018-08-14 2018-06-30 13F CORNING COM 219350105 10,785,201 3,658,984 51.35 296,542 49.26 0.1312
2018-05-14 2018-03-31 13F CORNING COM 219350105 7,126,217 1,380,898 24.04 198,676 8.04 0.0899
2018-02-12 2017-12-31 13F CORNING COM 219350105 5,745,319 -95,701 -1.64 183,898 5.23 0.0839
2017-11-07 2017-09-30 13F CORNING COM 219350105 5,841,020 -1,423,306 -19.59 174,764 -19.94 0.0832
2017-08-10 2017-06-30 13F CORNING COM 219350105 7,264,326 -293,449 -3.88 218,292 6.98 0.1093
2017-05-05 2017-03-31 13F CORNING COM 219350105 7,557,775 -1,495,143 -16.52 204,058 -7.12 0.1056
2017-02-03 2016-12-31 13F CORNING COM 219350105 9,052,918 -1,470,558 -13.97 219,709 -11.71 0.1200
2016-11-08 2016-09-30 13F CORNING COM 219350105 10,523,476 109,203 1.05 248,863 16.68 0.1394
2016-08-08 2016-06-30 13F CORNING COM 219350105 10,414,273 3,863,933 58.99 213,281 56.19 0.1250
2016-05-12 2016-03-31 13F CORNING COM 219350105 6,550,340 -109,195 -1.64 136,548 12.17 0.0815
2016-02-11 2015-12-31 13F CORNING COM 219350105 6,659,535 -214,877 -3.13 121,736 3.44 0.0715
2015-11-12 2015-09-30 13F CORNING COM 219350105 6,874,412 147,564 2.19 117,689 -11.33 0.0729
2015-08-13 2015-06-30 13F CORNING COM 219350105 6,726,848 -1,472,812 -17.96 132,722 -28.63 0.0755
2015-05-14 2015-03-31 13F CORNING COM 219350105 8,199,660 3,814,361 86.98 185,971 84.95 0.1067
2015-02-13 2014-12-31 13F CORNING COM 219350105 4,385,299 3,738,458 577.96 100,553 703.72 0.0586
2014-11-14 2014-09-30 13F CORNING COM 219350105 646,841 -820 -0.13 12,511 -12.00 0.0075
2014-08-13 2014-06-30 13F CORNING COM 219350105 647,661 24,108 3.87 14,217 9.50 0.0084
2014-05-14 2014-03-31 13F CORNING COM 219350105 623,553 -39,677 -5.98 12,984 9.86 0.0078
2014-02-14 2013-12-31 13F CORNING COM 219350105 663,230 -243,747 -26.87 11,819 -10.69 0.0072
2013-11-14 2013-09-30 13F CORNING COM 219350105 906,977 -1,296,779 -58.84 13,233 -57.80 0.0087
2013-08-14 2013-06-30 13F CORNING COM 219350105 2,203,756 2,203,756 31,359 0.0217
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.