Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionLMR Partners LLP
Latest Disclosed Ownership37,326 shares
Latest Disclosed Value $ 5,075,216
LMR Partners LLP reports 78.22% decrease in ownership of GLW / Corning Incorporated

On May 15, 2026 - LMR Partners LLP filed a 13F-HR form disclosing ownership of 37,326 shares of Corning Incorporated (MX:GLW) valued at $5,075,216 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 171,400 shares of Corning Incorporated. This represents a change in shares of -78.22% 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 37,326 -134,074 -78.22 5,075 -66.18 0.0090
2026-02-17 2025-12-31 13F CORNING COM 219350105 171,400 153,707 868.74 15,008 934.25 0.0282
2025-11-14 2025-09-30 13F CORNING COM 219350105 17,693 -982,324 -98.23 1,451 -97.24 0.0064
2025-08-14 2025-06-30 13F CORNING COM 219350105 1,000,017 600,000 149.99 52,591 187.19 0.3765
2025-05-15 2025-03-31 13F CORNING COM 219350105 400,017 -800,425 -66.68 18,313 -67.90 0.1713
2025-02-14 2024-12-31 13F CORNING COM 219350105 1,200,442 700,442 140.09 57,045 152.69 0.4797
2024-11-07 2024-09-30 13F CORNING COM 219350105 500,000 -199,996 -28.57 22,575 -16.99 0.1798
2024-08-14 2024-06-30 13F CORNING COM 219350105 699,996 699,996 27,195 0.2297
2020-02-14 2019-12-31 13F CORNING COM 219350105 0 -31,146 -100.00 0 -100.00
2019-11-14 2019-09-30 13F CORNING COM 219350105 31,146 31,146 888 0.0439
2019-05-15 2019-03-31 13F CORNING COM 219350105 0 -27,493 -100.00 0 -100.00
2019-02-14 2018-12-31 13F CORNING COM 219350105 27,493 27,493 831 0.0407
2018-11-14 2018-09-30 13F CORNING COM 219350105 0 -17,225 -100.00 0 -100.00
2018-08-03 2018-06-30 13F CORNING COM 219350105 17,225 -5,122 -22.92 474 -33.71 0.0246
2018-05-04 2018-03-31 13F CORNING COM 219350105 22,347 0 0.00 715 0.00 0.0734
2018-01-30 2017-12-31 13F CORNING COM 219350105 22,347 22,347 715 0.0734
2017-11-09 2017-09-30 13F CORNING COM 219350105 0 -73,632 -100.00 0 -100.00
2017-08-03 2017-06-30 13F CORNING COM 219350105 73,632 73,632 2,212 0.1388
2017-05-11 2017-03-31 13F CORNING COM 219350105 0 -32,384 -100.00 0 -100.00
2017-02-07 2016-12-31 13F CORNING COM 219350105 32,384 -1,969 -5.73 786 -3.32 0.1207
2016-11-04 2016-09-30 13F/A-1 CORNING COM 219350105 34,353 34,353 0.00 813 0.0772
2016-11-01 2016-09-30 13F CORNING COM 219350105 34,353 813
2016-11-04 2016-06-30 13F/A-1 CORNING COM 219350105 0 -42,257 -100.00 0 -100.00
2016-05-04 2016-03-31 13F CORNING COM 219350105 42,257 42,257 0.00 883 0.0965
2016-02-03 2015-12-31 13F CORNING COM 219350105 0 -57,394 -100.00 0 -100.00
2015-11-05 2015-09-30 13F CORNING COM 219350105 57,394 32,760 132.99 983 102.26 0.1075
2015-08-10 2015-06-30 13F CORNING COM 219350105 24,634 -54,148 -68.73 486 -72.80 0.0594
2015-04-20 2015-03-31 13F CORNING COM 219350105 78,782 78,782 0.00 1,787 0.2471
2015-01-20 2014-12-31 13F CORNING COM 219350105 0 -21,452 -100.00 0 -100.00
2014-10-20 2014-09-30 13F CORNING COM 219350105 21,452 -80,720 -79.00 415 -81.50 0.0331
2014-07-10 2014-06-30 13F CORNING COM 219350105 102,172 102,172 2,243 0.1866
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.