Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionEarnest Partners Llc
Latest Disclosed Ownership25,789 shares
Latest Disclosed Value $ 3,506,530
Earnest Partners Llc reports 37.47% decrease in ownership of GLW / Corning Incorporated

On May 15, 2026 - Earnest Partners Llc filed a 13F-HR form disclosing ownership of 25,789 shares of Corning Incorporated (MX:GLW) valued at $3,506,530 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 41,245 shares of Corning Incorporated. This represents a change in shares of -37.47% 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.

Upgrade to unlock premium data and export to Excel .

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 25,789 -15,456 -37.47 3,507 -2.91 0.0145
2026-02-12 2025-12-31 13F CORNING COM 219350105 41,245 -3,008 -6.80 3,611 -0.52 0.0155
2025-11-14 2025-09-30 13F CORNING COM 219350105 44,253 -5,336 -10.76 3,630 39.24 0.0157
2025-08-15 2025-06-30 13F CORNING COM 219350105 49,589 2,062 4.34 2,608 19.86 0.0118
2025-05-14 2025-03-31 13F CORNING COM 219350105 47,527 -960 -1.98 2,176 -5.60 0.0104
2025-02-14 2024-12-31 13F CORNING COM 219350105 48,487 -1,294 -2.60 2,304 2.54 0.0103
2024-11-14 2024-09-30 13F CORNING COM 219350105 49,781 -759 -1.50 2,248 14.47 0.0098
2024-08-14 2024-06-30 13F CORNING COM 219350105 50,540 -2,044 -3.89 1,963 13.27 0.0092
2024-05-15 2024-03-31 13F CORNING COM 219350105 52,584 -627 -1.18 1,733 6.98 0.0079
2024-02-14 2023-12-31 13F CORNING COM 219350105 53,211 -990 -1.83 1,620 -1.88 0.0081
2023-11-14 2023-09-30 13F CORNING COM 219350105 54,201 8,018 17.36 1,652 2.04 0.0095
2023-08-07 2023-06-30 13F CORNING COM 219350105 46,183 -3,249 -6.57 1,618 -7.17 0.0090
2023-05-15 2023-03-31 13F CORNING COM 219350105 49,432 0 0.00 1,744 10.46 0.0101
2023-02-14 2022-12-31 13F CORNING COM 219350105 49,432 5,986 13.78 1,579 25.14 0.0097
2022-11-14 2022-09-30 13F CORNING COM 219350105 43,446 681 1.59 1,261 -6.45 0.0085
2022-08-12 2022-06-30 13F CORNING COM 219350105 42,765 35 0.08 1,348 -14.52 0.0090
2022-05-16 2022-03-31 13F CORNING COM 219350105 42,730 12,141 39.69 1,577 38.45 0.0093
2022-02-07 2021-12-31 13F CORNING COM 219350105 30,589 -1,446 -4.51 1,139 -2.57 0.0066
2021-11-15 2021-09-30 13F CORNING COM 219350105 32,035 -3,967 -11.02 1,169 -20.58 0.0071
2021-08-16 2021-06-30 13F CORNING COM 219350105 36,002 -1,881 -4.97 1,472 -10.68 0.0086
2021-05-17 2021-03-31 13F CORNING COM 219350105 37,883 4,642 13.96 1,648 37.68 0.0098
2021-02-16 2020-12-31 13F CORNING COM 219350105 33,241 -135,270 -80.27 1,197 -78.08 0.0083
2020-11-16 2020-09-30 13F CORNING COM 219350105 168,511 -6,523 -3.73 5,461 20.47 0.0471
2020-08-13 2020-06-30 13F CORNING COM 219350105 175,034 -2,548 -1.43 4,533 24.26 0.0428
2020-05-14 2020-03-31 13F CORNING COM 219350105 177,582 -11,035 -5.85 3,648 -33.56 0.0411
2020-02-07 2019-12-31 13F CORNING COM 219350105 188,617 -6,806 -3.48 5,491 -1.47 0.0432
2019-11-14 2019-09-30 13F CORNING COM 219350105 195,423 -561 -0.29 5,573 -14.43 0.0504
2019-08-13 2019-06-30 13F CORNING COM 219350105 195,984 -1,203 -0.61 6,513 -0.21 0.0588
2019-05-15 2019-03-31 13F CORNING COM 219350105 197,187 1,725 0.88 6,527 10.53 0.0624
2019-02-14 2018-12-31 13F CORNING COM 219350105 195,462 -1,033 -0.53 5,905 -14.86 0.0643
2018-11-14 2018-09-30 13F CORNING COM 219350105 196,495 -2,533 -1.27 6,936 26.68 0.0621
2018-08-13 2018-06-30 13F CORNING COM 219350105 199,028 -638 -0.32 5,475 -1.65 0.0512
2018-05-15 2018-03-31 13F CORNING COM 219350105 199,666 -4,714 -2.31 5,567 -14.85 0.0527
2018-02-14 2017-12-31 13F CORNING COM 219350105 204,380 -16,950 -7.66 6,538 -1.27 0.0626
2017-11-14 2017-09-30 13F CORNING COM 219350105 221,330 -23,656 -9.66 6,622 -10.05 0.0660
2017-08-14 2017-06-30 13F CORNING COM 219350105 244,986 -1,702 -0.69 7,362 10.52 0.0773
2017-05-15 2017-03-31 13F CORNING COM 219350105 246,688 -121,883 -33.07 6,661 -25.53 0.0711
2017-02-14 2016-12-31 13F CORNING COM 219350105 368,571 -153,740 -29.43 8,945 -27.59 0.0977
2016-11-14 2016-09-30 13F CORNING COM 219350105 522,311 -7,089 -1.34 12,353 13.94 0.1296
2016-08-15 2016-06-30 13F CORNING COM 219350105 529,400 -1,482 -0.28 10,842 -2.24 0.1176
2016-05-16 2016-03-31 13F CORNING COM 219350105 530,882 -130,176 -19.69 11,090 -8.23 0.1162
2016-02-16 2015-12-31 13F CORNING COM 219350105 661,058 -14,921 -2.21 12,084 4.42 0.1232
2015-11-16 2015-09-30 13F CORNING COM 219350105 675,979 -8,834 -1.29 11,573 -14.34 0.1137
2015-08-14 2015-06-30 13F CORNING COM 219350105 684,813 -16,927 -2.41 13,511 -15.11 0.1180
2015-05-15 2015-03-31 13F CORNING COM 219350105 701,740 -5,511 -0.78 15,915 -1.86 0.1370
2015-02-17 2014-12-31 13F CORNING COM 219350105 707,251 -22,315 -3.06 16,217 14.93 0.1331
2014-11-14 2014-09-30 13F Corning COM 219350105 729,566 -59,608 -7.55 14,110 -18.54 0.1180
2014-08-14 2014-06-30 13F CORNING COM 219350105 789,174 -3,362 -0.42 17,322 4.98 0.1379
2014-05-15 2014-03-31 13F Corning COM 219350105 792,536 -48,584 -5.78 16,501 10.09 0.1324
2014-02-14 2013-12-31 13F Corning COM 219350105 841,120 841,120 14,989 0.1202
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.