Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionKorea Investment CORP
Latest Disclosed Ownership1,070,817 shares
Latest Disclosed Value $ 145,598,987
Korea Investment CORP reports 5.36% increase in ownership of GLW / Corning Incorporated

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 1,070,817 shares of Corning Incorporated (MX:GLW) valued at $145,598,987 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,016,375 shares of Corning Incorporated. This represents a change in shares of 5.36% 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)
2026-05-13 2026-03-31 13F CORNING COM 219350105 1,070,817 54,442 5.36 145,599 63.61 0.3016
2026-02-13 2025-12-31 13F CORNING COM 219350105 1,016,375 531,752 109.72 88,994 123.86 0.1752
2025-11-13 2025-09-30 13F CORNING COM 219350105 484,623 -7,526 -1.53 39,754 53.59 0.0818
2025-08-13 2025-06-30 13F CORNING COM 219350105 492,149 -101,254 -17.06 25,882 -4.72 0.0576
2025-05-14 2025-03-31 13F CORNING COM 219350105 593,403 3,503 0.59 27,166 -3.09 0.0658
2025-02-12 2024-12-31 13F CORNING COM 219350105 589,900 47,836 8.82 28,032 14.54 0.0665
2024-11-13 2024-09-30 13F CORNING COM 219350105 542,064 392,563 262.58 24,474 321.38 0.0581
2024-08-13 2024-06-30 13F CORNING COM 219350105 149,501 16,783 12.65 5,808 32.78 0.0146
2024-05-14 2024-03-31 13F CORNING COM 219350105 132,718 1,647 1.26 4,374 9.60 0.0111
2024-02-13 2023-12-31 13F CORNING COM 219350105 131,071 10,987 9.15 3,991 9.10 0.0105
2023-11-13 2023-09-30 13F CORNING COM 219350105 120,084 -19,782 -14.14 3,659 -25.35 0.0108
2023-08-11 2023-06-30 13F CORNING COM 219350105 139,866 -197,453 -58.54 4,901 -58.82 0.0138
2023-05-12 2023-03-31 13F CORNING COM 219350105 337,319 -166,412 -33.04 11,901 -26.04 0.0347
2023-02-13 2022-12-31 13F CORNING COM 219350105 503,731 80,527 19.03 16,089 31.01 0.0505
2022-11-10 2022-09-30 13F CORNING COM 219350105 423,204 -79,148 -15.76 12,281 -22.41 0.0378
2022-08-12 2022-06-30 13F CORNING COM 219350105 502,352 186,452 59.02 15,829 35.75 0.0484
2022-05-13 2022-03-31 13F CORNING COM 219350105 315,900 -1,617,600 -83.66 11,660 -83.80 0.0288
2022-02-09 2021-12-31 13F CORNING COM 219350105 1,933,500 -242,172 -11.13 71,984 -9.33 0.1871
2021-11-12 2021-09-30 13F CORNING COM 219350105 2,175,672 199,610 10.10 79,390 -1.77 0.2367
2021-08-12 2021-06-30 13F CORNING COM 219350105 1,976,062 -178,038 -8.27 80,821 -13.77 0.2315
2021-05-13 2021-03-31 13F CORNING COM 219350105 2,154,100 -85,544 -3.82 93,725 16.25 0.2959
2021-02-10 2020-12-31 13F CORNING COM 219350105 2,239,644 286,265 14.65 80,627 27.35 0.2422
2020-11-12 2020-09-30 13F CORNING COM 219350105 1,953,379 39,700 2.07 63,309 27.73 0.2237
2020-08-12 2020-06-30 13F CORNING COM 219350105 1,913,679 -10,200 -0.53 49,564 25.43 0.1821
2020-05-14 2020-03-31 13F CORNING COM 219350105 1,923,879 307,466 19.02 39,516 -16.02 0.1735
2020-02-11 2019-12-31 13F CORNING COM 219350105 1,616,413 150,900 10.30 47,054 12.58 0.1716
2019-11-12 2019-09-30 13F CORNING COM 219350105 1,465,513 -149,100 -9.23 41,796 -22.10 0.1767
2019-08-12 2019-06-30 13F CORNING COM 219350105 1,614,613 364,000 29.11 53,654 29.61 0.2307
2019-05-15 2019-03-31 13F CORNING COM 219350105 1,250,613 61,262 5.15 41,395 15.21 0.1863
2019-02-13 2018-12-31 13F CORNING COM 219350105 1,189,351 10,100 0.86 35,930 -13.69 0.1953
2018-11-13 2018-09-30 13F CORNING COM 219350105 1,179,251 967,033 455.68 41,628 613.05 0.1920
2018-08-13 2018-06-30 13F CORNING COM 219350105 212,218 13,600 6.85 5,838 5.44 0.0266
2018-05-09 2018-03-31 13F CORNING COM 219350105 198,618 -179,087 -47.41 5,537 -54.18 0.0258
2018-02-12 2017-12-31 13F CORNING COM 219350105 377,705 -33,000 -8.03 12,083 -1.67 0.0550
2017-10-25 2017-09-30 13F CORNING COM 219350105 410,705 -68,300 -14.26 12,288 -14.63 0.0568
2017-07-31 2017-06-30 13F CORNING COM 219350105 479,005 -79,173 -14.18 14,394 -4.49 0.0671
2017-04-25 2017-03-31 13F CORNING COM 219350105 558,178 -1,315,046 -70.20 15,071 -66.85 0.0748
2017-02-13 2016-12-31 13F CORNING COM 219350105 1,873,224 -157,038 -7.73 45,463 -5.32 0.2185
2016-11-09 2016-09-30 13F CORNING COM 219350105 2,030,262 1,975,562 3,611.63 48,016 4,187.14 0.2559
2016-08-12 2016-06-30 13F CORNING COM 219350105 54,700 -145,400 -72.66 1,120 -73.21 0.0067
2016-05-12 2016-03-31 13F CORNING COM 219350105 200,100 -294,800 -59.57 4,180 -53.79 0.0306
2016-02-01 2015-12-31 13F CORNING COM 219350105 494,900 37,300 8.15 9,046 15.47 0.0630
2015-11-12 2015-09-30 13F CORNING COM 219350105 457,600 -124,700 -21.42 7,834 -31.81 0.0624
2015-08-13 2015-06-30 13F CORNING COM 219350105 582,300 12,300 2.16 11,489 -11.13 0.0979
2015-05-11 2015-03-31 13F CORNING COM 219350105 570,000 221,900 63.75 12,928 61.96 0.1007
2015-02-12 2014-12-31 13F CORNING COM 219350105 348,100 -261,200 -42.87 7,982 -32.26 0.0655
2014-11-14 2014-09-30 13F CORNING COM 219350105 609,300 -205,100 -25.18 11,784 -34.08 0.0961
2014-08-14 2014-06-30 13F CORNING COM 219350105 814,400 -120,300 -12.87 17,876 -8.14 0.1488
2014-05-14 2014-03-31 13F CORNING COM 219350105 934,700 -153,500 -14.11 19,460 0.35 0.1723
2014-02-06 2013-12-31 13F CORNING COM 219350105 1,088,200 -101,500 -8.53 19,392 11.72 0.1834
2013-11-07 2013-09-30 13F/A-1 CORNING COM 219350105 1,189,700 50,500 4.43 17,358 7.08 0.1844
2013-11-05 2013-09-30 13F CORNING COM 219350105 822,200 11,996
2013-08-08 2013-06-30 13F CORNING COM 219350105 1,139,200 1,139,200 16,211 0.1943
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.