Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership893,451 shares
Latest Disclosed Value $ 121,482,532
Principal Financial Group Inc reports 1.20% increase in ownership of GLW / Corning Incorporated

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 893,451 shares of Corning Incorporated (MX:GLW) valued at $121,482,532 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 882,860 shares of Corning Incorporated. This represents a change in shares of 1.20% 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)
2026-05-04 2026-03-31 13F CORNING COM 219350105 893,451 10,591 1.20 121,483 57.15 0.0331
2026-02-02 2025-12-31 13F CORNING COM 219350105 882,860 15,456 1.78 77,303 8.64 0.0395
2025-11-04 2025-09-30 13F CORNING COM 219350105 867,404 19,576 2.31 71,153 59.58 0.0359
2025-08-08 2025-06-30 13F CORNING COM 219350105 847,828 -27,075 -3.09 44,587 11.32 0.0236
2025-04-28 2025-03-31 13F CORNING COM 219350105 874,903 -2,436 -0.28 40,053 -3.93 0.0225
2025-01-31 2024-12-31 13F CORNING COM 219350105 877,339 -13,642 -1.53 41,691 3.64 0.0227
2024-10-31 2024-09-30 13F CORNING COM 219350105 890,981 12,451 1.42 40,228 17.86 0.0222
2024-07-29 2024-06-30 13F CORNING COM 219350105 878,530 -16,950 -1.89 34,131 15.64 0.0203
2024-04-29 2024-03-31 13F CORNING COM 219350105 895,480 12,625 1.43 29,515 9.79 0.0173
2024-02-07 2023-12-31 13F CORNING COM 219350105 882,855 -10,473 -1.17 26,883 -1.24 0.0171
2023-11-02 2023-09-30 13F CORNING COM 219350105 893,328 -752 -0.08 27,220 -13.12 0.0196
2023-08-07 2023-06-30 13F CORNING COM 219350105 894,080 -46,655 -4.96 31,329 -5.61 0.0214
2023-05-09 2023-03-31 13F CORNING COM 219350105 940,735 7,689 0.82 33,189 11.37 0.0237
2023-02-09 2022-12-31 13F CORNING COM 219350105 933,046 -45,084 -4.61 29,801 4.98 0.0224
2022-11-09 2022-09-30 13F CORNING COM 219350105 978,130 -52,527 -5.10 28,386 -12.59 0.0226
2022-08-10 2022-06-30 13F CORNING COM 219350105 1,030,657 51,417 5.25 32,476 -10.15 0.0240
2022-05-09 2022-03-31 13F CORNING COM 219350105 979,240 31,172 3.29 36,144 2.40 0.0143
2022-05-09 2022-03-31 13F CORNING COM 219350105 904,864 33,399
2022-02-09 2021-12-31 13F CORNING COM 219350105 948,068 -22,469 -2.32 35,296 -0.34 0.0211
2021-11-09 2021-09-30 13F CORNING COM 219350105 970,537 3,906 0.40 35,415 -10.42 0.0231
2021-08-10 2021-06-30 13F CORNING COM 219350105 966,631 36,236 3.89 39,535 -2.34 0.0255
2021-05-10 2021-03-31 13F CORNING COM 219350105 930,395 -68,580 -6.87 40,481 12.56 0.0286
2021-02-23 2020-12-31 13F/A-1 CORNING COM 219350105 998,975 -71,491 -6.68 35,963 3.66 0.0266
2021-02-08 2020-12-31 13F CORNING COM 219350105 998,975 -71,491 35,963 14,148.3984
2020-11-06 2020-09-30 13F CORNING COM 219350105 1,070,466 -59,793 -5.29 34,694 18.51 0.0292
2020-08-05 2020-06-30 13F CORNING COM 219350105 1,130,259 23,626 2.13 29,274 28.78 0.0260
2020-05-12 2020-03-31 13F CORNING COM 219350105 1,106,633 24,150 2.23 22,731 -27.86 0.0252
2020-02-05 2019-12-31 13F CORNING COM 219350105 1,082,483 -56,861 -4.99 31,511 -3.03 0.0263
2019-11-13 2019-09-30 13F CORNING COM 219350105 1,139,344 -31,859 -2.72 32,494 -16.51 0.0287
2019-08-12 2019-06-30 13F CORNING COM 219350105 1,171,203 17,586 1.52 38,919 1.92 0.0350
2019-05-10 2019-03-31 13F CORNING COM 219350105 1,153,617 -39,099 -3.28 38,185 5.98 0.0356
2019-02-14 2018-12-31 13F CORNING COM 219350105 1,192,716 -18,272 -1.51 36,032 -15.71 0.0384
2018-11-14 2018-09-30 13F CORNING COM 219350105 1,210,988 -15,714 -1.28 42,748 26.67 0.0377
2018-08-13 2018-06-30 13F CORNING COM 219350105 1,226,702 -92,479 -7.01 33,747 -8.24 0.0310
2018-05-14 2018-03-31 13F CORNING COM 219350105 1,319,181 -69,540 -5.01 36,779 -17.21 0.0353
2018-02-12 2017-12-31 13F CORNING COM 219350105 1,388,721 -20,888 -1.48 44,425 5.33 0.0409
2017-11-02 2017-09-30 13F CORNING COM 219350105 1,409,609 -110,503 -7.27 42,175 -7.67 0.0409
2017-08-08 2017-06-30 13F CORNING COM 219350105 1,520,112 209,796 16.01 45,679 29.11 0.0458
2017-05-11 2017-03-31 13F CORNING COM 219350105 1,310,316 -11,282 -0.85 35,379 10.30 0.0426
2017-02-13 2016-12-31 13F CORNING COM 219350105 1,321,598 -119,558 -8.30 32,076 -5.89 0.0407
2016-11-10 2016-09-30 13F CORNING COM 219350105 1,441,156 -21,600 -1.48 34,084 13.78 0.0450
2016-08-09 2016-06-30 13F CORNING COM 219350105 1,462,756 -23,635 -1.59 29,957 -3.52 0.0418
2016-05-10 2016-03-31 13F CORNING COM 219350105 1,486,391 -77,141 -4.93 31,051 8.64 0.0451
2016-02-09 2015-12-31 13F CORNING COM 219350105 1,563,532 -37,609 -2.35 28,581 4.27 0.0425
2015-11-12 2015-09-30 13F/A-1 CORNING COM 219350105 1,601,141 -3,548 -0.22 27,411 -13.42 0.0431
2015-11-09 2015-09-30 13F CORNING COM 219350105 1,601,141 27,411
2015-08-10 2015-06-30 13F CORNING COM 219350105 1,604,689 -40,716 -2.47 31,660 -15.16 0.0472
2015-05-14 2015-03-31 13F/A-1 CORNING COM 219350105 1,645,405 36,252 2.25 37,317 1.14 0.0556
2015-05-12 2015-03-31 13F CORNING COM 219350105 1,645,405 37,317
2015-02-12 2014-12-31 13F CORNING COM 219350105 1,609,153 53,890 3.47 36,898 22.67 0.0573
2014-11-13 2014-09-30 13F CORNING COM 219350105 1,555,263 6,222 0.40 30,079 -11.53 0.0510
2014-08-12 2014-06-30 13F CORNING COM 219350105 1,549,041 -27,886 -1.77 34,001 3.56 0.0572
2014-05-13 2014-03-31 13F CORNING COM 219350105 1,576,927 -33,156 -2.06 32,832 14.43 0.0586
2014-02-12 2013-12-31 13F CORNING COM 219350105 1,610,083 -12,690 -0.78 28,691 21.18 0.0535
2013-11-05 2013-09-30 13F CORNING COM 219350105 1,622,773 -52,429 -3.13 23,676 -0.68 0.0489
2013-08-12 2013-06-30 13F CORNING COM 219350105 1,675,202 1,675,202 23,838 0.0528
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.