Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionCommunity Financial Services Group, LLC
Latest Disclosed Ownership36,417 shares
Latest Disclosed Value $ 5,185,053
Community Financial Services Group, LLC reports 12.18% increase in ownership of GLW / Corning Incorporated

On April 8, 2026 - Community Financial Services Group, LLC filed a 13F-HR form disclosing ownership of 36,417 shares of Corning Incorporated (MX:GLW) valued at $5,185,053 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 32,462 shares of Corning Incorporated. This represents a change in shares of 12.18% 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)
2026-04-08 2026-03-31 13F CORNING COM 219350105 36,417 3,955 12.18 5,185 82.44 0.8625
2026-01-15 2025-12-31 13F CORNING COMMON STOCK 219350105 32,462 -125 -0.38 2,842 6.32 0.5219
2025-10-21 2025-09-30 13F CORNING COMMON STOCK 219350105 32,587 -130 -0.40 2,673 55.41 0.4898
2025-07-18 2025-06-30 13F CORNING COMMON STOCK 219350105 32,717 -6,718 -17.04 1,721 -4.71 0.3422
2025-04-23 2025-03-31 13F CORNING COMMON STOCK 219350105 39,435 -13,394 -25.35 1,805 -28.09 0.3914
2025-01-29 2024-12-31 13F CORNING COMMON STOCK 219350105 52,829 -9,376 -15.07 2,510 -10.61 0.4975
2024-10-21 2024-09-30 13F CORNING COMMON STOCK 219350105 62,205 -2,260 -3.51 2,809 12.14 0.5746
2024-07-25 2024-06-30 13F CORNING COMMON STOCK 219350105 64,465 -11,159 -14.76 2,504 0.48 0.5394
2024-04-23 2024-03-31 13F CORNING COMMON STOCK 219350105 75,624 -196,089 -72.17 2,493 -69.90 0.5678
2023-11-07 2023-09-30 13F CORNING COMMON STOCK 219350105 271,713 667 0.25 8,279 -17.96 2.0882
2022-03-10 2021-12-31 13F CORNING COMMON STOCK 219350105 271,046 6,754 2.56 10,091 4.64 2.5296
2021-11-09 2021-09-30 13F CORNING COMMON STOCK 219350105 264,292 -669 -0.25 9,644 -11.01 2.6251
2021-07-23 2021-06-30 13F CORNING COMMON STOCK 219350105 264,961 -3,366 -1.25 10,837 -7.18 3.0248
2021-05-14 2021-03-31 13F CORNING COMMON STOCK 219350105 268,327 40,485 17.77 11,675 42.34 3.4585
2021-02-04 2020-12-31 13F CORNING COMMON STOCK 219350105 227,842 -2,780 -1.21 8,202 9.73 2.5819
2020-10-29 2020-09-30 13F CORNING COMMON STOCK 219350105 230,622 -14,865 -6.06 7,475 17.57 2.7603
2020-07-24 2020-06-30 13F CORNING COMMON STOCK 219350105 245,487 -39,557 -13.88 6,358 8.59 2.4168
2020-04-10 2020-03-31 13F CORNING COMMON STOCK 219350105 285,044 12,310 4.51 5,855 -26.26 1.9950
2020-02-06 2019-12-31 13F CORNING COMMON STOCK 219350105 272,734 7,739 2.92 7,940 5.05 2.0620
2019-10-24 2019-09-30 13F CORNING COMMON STOCK 219350105 264,995 7,085 2.75 7,558 -11.81 2.1865
2019-07-24 2019-06-30 13F CORNING COMMON STOCK 219350105 257,910 -8,250 -3.10 8,570 -2.72 2.9286
2019-04-22 2019-03-31 13F CORNING COMMON STOCK 219350105 266,160 2,815 1.07 8,810 10.73 2.9998
2019-02-04 2018-12-31 13F CORNING COMMON STOCK 219350105 263,345 11,734 4.66 7,956 -10.43 3.0157
2018-10-11 2018-09-30 13F CORNING COMMON STOCK 219350105 251,611 -4,807 -1.87 8,882 25.91 3.0302
2018-07-27 2018-06-30 13F CORNING COMMON STOCK 219350105 256,418 16,495 6.88 7,054 5.44 2.5233
2018-04-23 2018-03-31 13F CORNING COMMON STOCK 219350105 239,923 35 0.01 6,690 -12.82 2.6243
2018-01-18 2017-12-31 13F CORNING COMMON STOCK 219350105 239,888 660 0.28 7,674 7.21 2.9773
2017-10-24 2017-09-30 13F CORNING COMMON STOCK 219350105 239,228 -690 -0.29 7,158 -0.72 2.9322
2017-07-06 2017-06-30 13F CORNING COMMON STOCK 219350105 239,918 2,270 0.96 7,210 12.38 3.1685
2017-05-19 2017-03-31 13F CORNING COMMON STOCK 219350105 237,648 -450 -0.19 6,416 11.02 2.8817
2017-01-10 2016-12-31 13F CORNING COMMON STOCK 219350105 238,098 -2,107 -0.88 5,779 1.73 2.7244
2016-10-25 2016-09-30 13F CORNING COMMON STOCK 219350105 240,205 -45 -0.02 5,681 15.47 2.6837
2016-08-02 2016-06-30 13F CORNING COMMON STOCK 219350105 240,250 -5,558 -2.26 4,920 -4.19 2.4276
2016-04-27 2016-03-31 13F CORNING COMMON STOCK 219350105 245,808 -12,824 -4.96 5,135 8.61 2.5155
2016-02-08 2015-12-31 13F CORNING COMMON STOCK 219350105 258,632 3,216 1.26 4,728 8.14 2.3158
2015-10-26 2015-09-30 13F CORNING COMMON STOCK 219350105 255,416 8,115 3.28 4,372 -10.41 2.1709
2015-07-23 2015-06-30 13F CORNING COMMON STOCK 219350105 247,301 1,245 0.51 4,880 -12.54 2.3250
2015-05-01 2015-03-31 13F CORNING COMMON STOCK 219350105 246,056 246,056 0.00 5,580 2.6205
2015-01-27 2014-12-31 13F CORNING COMMON STOCK 219350105 0 -257,066 -100.00 0 -100.00
2014-10-16 2014-09-30 13F CORNING COMMON STOCK 219350105 257,066 1,660 0.65 4,971 -11.33 2.4582
2014-07-29 2014-06-30 13F CORNING COMMON STOCK 219350105 255,406 7,811 3.15 5,606 8.75 2.7784
2014-04-17 2014-03-31 13F CORNING COMMON STOCK 219350105 247,595 -3,985 -1.58 5,155 14.99 2.5394
2014-01-22 2013-12-31 13F CORNING COMMON STOCK 219350105 251,580 -3,285 -1.29 4,483 20.54 2.4269
2013-10-15 2013-09-30 13F CORNING COMMON STOCK 219350105 254,865 8,990 3.66 3,719 6.29 2.0737
2013-08-12 2013-06-30 13F CORNING COMMON STOCK 219350105 245,875 245,875 3,499 2.0807
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.