Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionKey FInancial Inc
Latest Disclosed Ownership5,653 shares
Latest Disclosed Value $ 768,638
Key FInancial Inc reports 8.13% decrease in ownership of GLW / Corning Incorporated

On April 24, 2026 - Key FInancial Inc filed a 13F-HR form disclosing ownership of 5,653 shares of Corning Incorporated (MX:GLW) valued at $768,638 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 6,153 shares of Corning Incorporated. This represents a change in shares of -8.13% 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)
2026-04-24 2026-03-31 13F CORNING COM 219350105 5,653 -500 -8.13 769 42.75 0.1318
2026-02-09 2025-12-31 13F CORNING COM 219350105 6,153 50 0.82 539 6.11 0.0983
2025-11-05 2025-09-30 13F CORNING COM 219350105 6,103 -150 -2.40 507 54.57 0.0937
2025-08-05 2025-06-30 13F CORNING COM 219350105 6,253 -823 -11.63 329 1.55 0.0662
2025-05-01 2025-03-31 13F CORNING COM 219350105 7,076 -420 -5.60 324 -9.27 0.0705
2025-01-31 2024-12-31 13F CORNING COM 219350105 7,496 0 0.00 356 5.33 0.0810
2024-10-29 2024-09-30 13F CORNING COM 219350105 7,496 0 0.00 338 16.15 0.0748
2024-07-30 2024-06-30 13F CORNING COM 219350105 7,496 0 0.00 291 17.81 0.0698
2024-05-13 2024-03-31 13F/A-1 CORNING COM 219350105 7,496 0 0.00 247 8.33 0.0630
2024-05-01 2024-03-31 13F CORNING COM 219350105 7,496 0 228 0.0624
2024-01-31 2023-12-31 13F CORNING COM 219350105 7,496 -83 -1.10 228 -0.87 0.0624
2023-11-01 2023-09-30 13F CORNING COM 219350105 7,579 0 0.00 231 -13.21 0.0779
2023-07-28 2023-06-30 13F CORNING COM 219350105 7,579 161 2.17 266 1.53 0.0880
2023-05-02 2023-03-31 13F CORNING COM 219350105 7,418 5,000 206.78 262 272.86 0.0954
2023-01-26 2022-12-31 13F CORNING COM 219350105 2,418 0 0.00 70 0.00 0.0332
2022-10-28 2022-09-30 13F CORNING COM 219350105 2,418 83 3.55 70 -6.67 0.0329
2022-07-26 2022-06-30 13F CORNING COM 219350105 2,335 -12,000 -83.71 75 -85.82 0.0406
2022-04-27 2022-03-31 13F CORNING COM 219350105 14,335 0 0.00 529 -0.94 0.2629
2022-01-19 2021-12-31 13F CORNING COM 219350105 14,335 0 0.00 534 2.10 0.2674
2021-11-01 2021-09-30 13F CORNING COM 219350105 14,335 0 0.00 523 -12.83 0.2959
2021-08-02 2021-06-30 13F CORNING COM 219350105 14,335 0 0.00 600 -3.85 0.3353
2021-04-30 2021-03-31 13F CORNING COM 219350105 14,335 595 4.33 624 26.06 0.4113
2021-01-29 2020-12-31 13F CORNING COM 219350105 13,740 -460 -3.24 495 7.61 0.3684
2020-11-02 2020-09-30 13F CORNING COM 219350105 14,200 100 0.71 460 27.07 0.4718
2020-08-07 2020-06-30 13F CORNING COM 219350105 14,100 0 0.00 362 20.67 0.4150
2020-05-05 2020-03-31 13F CORNING COM 219350105 14,100 0 0.00 300 -26.83 0.3077
2020-02-11 2019-12-31 13F CORNING COM 219350105 14,100 14,100 410 0.3846
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.