Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership19,167 shares
Latest Disclosed Value $ 2,606,137
Quadrant Capital Group Llc reports 2.90% increase in ownership of GLW / Corning Incorporated

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 19,167 shares of Corning Incorporated (MX:GLW) valued at $2,606,137 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 18,626 shares of Corning Incorporated. This represents a change in shares of 2.90% 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/A-1 CORNING COM 219350105 19,167 541 2.90 2,606 59.88 0.0779
2026-05-11 2026-03-31 13F CORNING COM 219350105 19,167 541 49 0.0369
2026-02-12 2025-12-31 13F CORNING COM 219350105 18,626 866 4.88 1,631 11.95 0.0493
2025-11-13 2025-09-30 13F CORNING COM 219350105 17,760 151 0.86 1,457 57.24 0.0474
2025-08-13 2025-06-30 13F CORNING COM 219350105 17,609 8,414 91.51 926 120.48 0.0333
2025-05-13 2025-03-31 13F CORNING COM 219350105 9,195 4,236 85.42 421 78.72 0.0156
2025-02-13 2024-12-31 13F CORNING COM 219350105 4,959 130 2.69 236 7.80 0.0162
2024-11-12 2024-09-30 13F CORNING COM 219350105 4,829 194 4.19 218 21.11 0.0151
2024-08-12 2024-06-30 13F CORNING COM 219350105 4,635 976 26.67 180 50.00 0.0134
2024-05-15 2024-03-31 13F CORNING COM 219350105 3,659 -20 -0.54 121 7.14 0.0095
2024-02-08 2023-12-31 13F CORNING COM 219350105 3,679 -478 -11.50 112 -11.11 0.0096
2023-11-14 2023-09-30 13F CORNING COM 219350105 4,157 621 17.56 127 2.44 0.0127
2023-08-10 2023-06-30 13F CORNING COM 219350105 3,536 -2,064 -36.86 124 -37.56 0.0123
2023-05-11 2023-03-31 13F CORNING COM 219350105 5,600 1,416 33.84 198 48.12 0.0206
2023-02-13 2022-12-31 13F CORNING COM 219350105 4,184 -153 -3.53 134 5.56 0.0151
2022-11-10 2022-09-30 13F CORNING COM 219350105 4,337 -246 -5.37 126 -12.50 0.0167
2022-08-09 2022-06-30 13F CORNING COM 219350105 4,583 673 17.21 144 0.00 0.0193
2022-05-06 2022-03-31 13F CORNING COM 219350105 3,910 -330 -7.78 144 -8.86 0.0174
2022-02-01 2021-12-31 13F CORNING COM 219350105 4,240 75 1.80 158 3.95 0.0189
2021-11-12 2021-09-30 13F CORNING COM 219350105 4,165 267 6.85 152 -4.40 0.0212
2021-08-09 2021-06-30 13F CORNING COM 219350105 3,898 -5 -0.13 159 -6.47 0.0231
2021-05-12 2021-03-31 13F CORNING COM 219350105 3,903 597 18.06 170 42.86 0.0276
2021-02-16 2020-12-31 13F CORNING COM 219350105 3,306 -136 -3.95 119 6.25 0.0221
2020-11-13 2020-09-30 13F CORNING COM 219350105 3,442 12 0.35 112 25.84 0.0244
2020-08-13 2020-06-30 13F CORNING COM 219350105 3,430 886 34.83 89 67.92 0.0197
2020-05-15 2020-03-31 13F Corning Com 219350105 2,544 -414 -14.00 53 -29.33 0.0089
2020-03-19 2019-12-31 13F/A-1 Corning Com 219350105 2,958 1,885 175.68 75 226.09 0.0090
2020-02-03 2019-12-31 13F Corning Com 219350105 2,958 1,885 75 253.4348
2019-10-24 2019-09-30 13F Corning COM 219350105 1,073 -3,856 -78.23 23 -85.26 0.0035
2019-07-24 2019-06-30 13F Corning COM 219350105 4,929 3,075 165.86 156 194.34 0.0247
2019-04-29 2019-03-31 13F Corning COM 219350105 1,854 448 31.86 53 51.43 0.0093
2019-01-17 2018-12-31 13F CORNING COM 219350105 1,406 412 41.45 35 25.00 0.0093
2018-10-29 2018-09-30 13F CORNING COM 219350105 994 0 0.00 28 40.00 0.0080
2018-08-08 2018-06-30 13F CORNING COM 219350105 994 -24 -2.36 20 -9.09 0.0070
2018-05-10 2018-03-31 13F CORNING COM 219350105 1,018 2 0.20 22 -12.00 0.0080
2018-01-31 2017-12-31 13F Corning COM 219350105 1,016 0 0.00 25 8.70 0.0100
2017-10-13 2017-09-30 13F Corning COM 219350105 1,016 0 0.00 23 4.55 0.0095
2017-08-14 2017-06-30 13F Corning COM 219350105 1,016 68 7.17 22 15.79 0.0097
2017-04-10 2017-03-31 13F Corning COM 219350105 948 200 26.74 19 46.15 0.0083
2017-01-11 2016-12-31 13F Corning COM 219350105 748 0 0.00 13 8.33 0.0065
2016-10-25 2016-09-30 13F Corning COM 219350105 748 36 5.06 12 20.00 0.0078
2016-07-28 2016-06-30 13F Corning COM 219350105 712 116 19.46 10 11.11 0.0069
2016-04-27 2016-03-31 13F Corning COM 219350105 596 153 34.54 9 80.00 0.0058
2016-01-28 2015-12-31 13F Corning COM 219350105 443 353 392.22 5 400.00 0.0035
2015-10-28 2015-09-30 13F Corning COM 219350105 90 26 40.62 1 0.00 0.0007
2015-08-12 2015-06-30 13F Corning COM 219350105 64 64 1 0.0006
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.