Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionCambridge Advisors Inc.
Latest Disclosed Ownership34,756 shares
Latest Disclosed Value $ 4,725,783
Cambridge Advisors Inc. reports 0.16% increase in ownership of GLW / Corning Incorporated

On April 16, 2026 - Cambridge Advisors Inc. filed a 13F-HR form disclosing ownership of 34,756 shares of Corning Incorporated (MX:GLW) valued at $4,725,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 34,701 shares of Corning Incorporated. This represents a change in shares of 0.16% 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)
2026-04-16 2026-03-31 13F CORNING COM 219350105 34,756 55 0.16 4,726 55.53 0.9171
2026-01-21 2025-12-31 13F CORNING COM 219350105 34,701 25 0.07 3,038 6.82 0.5784
2025-10-15 2025-09-30 13F CORNING COM 219350105 34,676 -922 -2.59 2,844 51.92 0.5558
2025-07-16 2025-06-30 13F CORNING COM 219350105 35,598 -55 -0.15 1,872 14.71 0.3913
2025-04-24 2025-03-31 13F CORNING COM 219350105 35,653 55 0.15 1,632 -3.49 0.3575
2025-01-16 2024-12-31 13F CORNING COM 219350105 35,598 0 0.00 1,692 5.23 0.3776
2024-10-23 2024-09-30 13F CORNING COM 219350105 35,598 -160 -0.45 1,607 15.69 0.3511
2024-07-11 2024-06-30 13F CORNING COM 219350105 35,758 160 0.45 1,389 18.41 0.3228
2024-04-16 2024-03-31 13F CORNING COM 219350105 35,598 -1,500 -4.04 1,173 3.90 0.2767
2024-01-17 2023-12-31 13F CORNING COM 219350105 37,098 0 0.00 1,130 -0.09 0.2838
2023-10-18 2023-09-30 13F CORNING COM 219350105 37,098 0 0.00 1,130 -13.01 0.3035
2023-07-13 2023-06-30 13F CORNING COM 219350105 37,098 -11,017 -22.90 1,300 -23.45 0.3326
2023-04-13 2023-03-31 13F CORNING COM 219350105 48,115 19 0.04 1,697 10.48 0.4345
2023-01-23 2022-12-31 13F CORNING COM 219350105 48,096 20 0.04 1,536 10.11 0.4123
2022-10-17 2022-09-30 13F CORNING COM 219350105 48,076 22 0.05 1,395 -7.86 0.3997
2022-07-18 2022-06-30 13F CORNING COM 219350105 48,054 20 0.04 1,514 -14.61 0.4138
2022-05-05 2022-03-31 13F CORNING COM 219350105 48,034 0 0.00 1,773 -0.84 0.4225
2022-01-14 2021-12-31 13F CORNING COM 219350105 48,034 0 0.00 1,788 2.00 0.4039
2021-10-19 2021-09-30 13F CORNING COM 219350105 48,034 -200 -0.41 1,753 -11.15 0.4271
2021-07-21 2021-06-30 13F CORNING COM 219350105 48,234 0 0.00 1,973 -6.00 0.4771
2021-04-22 2021-03-31 13F CORNING COM 219350105 48,234 0 0.00 2,099 20.91 0.5364
2021-01-25 2020-12-31 13F CORNING COM 219350105 48,234 -116 -0.24 1,736 10.78 0.4673
2020-10-15 2020-09-30 13F CORNING COM 219350105 48,350 0 0.00 1,567 25.16 0.4615
2020-07-17 2020-06-30 13F CORNING COM 219350105 48,350 0 0.00 1,252 26.08 0.3921
2020-04-21 2020-03-31 13F CORNING COM 219350105 48,350 0 0.00 993 -29.42 0.3618
2020-01-28 2019-12-31 13F CORNING COM 219350105 48,350 0 0.00 1,407 2.03 0.4292
2019-10-25 2019-09-30 13F CORNING COM 219350105 48,350 0 0.00 1,379 -14.19 0.4548
2019-07-26 2019-06-30 13F CORNING COM 219350105 48,350 -150 -0.31 1,607 0.12 0.5304
2019-04-16 2019-03-31 13F CORNING COM 219350105 48,500 -516 -1.05 1,605 8.37 0.5466
2019-01-29 2018-12-31 13F CORNING COM 219350105 49,016 -75 -0.15 1,481 -14.54 0.5510
2018-10-24 2018-09-30 13F CORNING COM 219350105 49,091 0 0.00 1,733 28.28 0.5852
2018-07-30 2018-06-30 13F CORNING COM 219350105 49,091 0 0.00 1,351 -1.31 0.4776
2018-04-18 2018-03-31 13F CORNING COM 219350105 49,091 0 0.00 1,369 -12.80 0.4908
2018-01-26 2017-12-31 13F CORNING COM 219350105 49,091 -288 -0.58 1,570 6.30 0.5666
2017-10-27 2017-09-30 13F CORNING COM 219350105 49,379 11 0.02 1,477 -0.40 0.5679
2017-07-24 2017-06-30 13F CORNING COM 219350105 49,368 -3,986 -7.47 1,483 2.91 0.5994
2017-04-20 2017-03-31 13F CORNING COM 219350105 53,354 0 0.00 1,441 11.27 0.5943
2017-01-24 2016-12-31 13F CORNING COM 219350105 53,354 -350 -0.65 1,295 1.97 0.5723
2016-10-21 2016-09-30 13F CORNING COM 219350105 53,704 15 0.03 1,270 15.45 0.5620
2016-07-26 2016-06-30 13F CORNING COM 219350105 53,689 -1,265 -2.30 1,100 -4.18 0.5026
2016-04-25 2016-03-31 13F CORNING COM 219350105 54,954 0 0.00 1,148 14.23 0.5328
2016-01-28 2015-12-31 13F Corning Common Stock 219350105 54,954 -1,530 -2.71 1,005 3.93 0.5697
2015-10-23 2015-09-30 13F Corning Common Stock 219350105 56,484 -787 -1.37 967 -14.42 0.5712
2015-07-28 2015-06-30 13F Corning Common Stock 219350105 57,271 -698 -1.20 1,130 -14.07 0.6367
2015-05-06 2015-03-31 13F Corning Common Stock 219350105 57,969 -100 -0.17 1,315 -1.28 0.7636
2015-02-17 2014-12-31 13F Corning Common Stock 219350105 58,069 58,069 1,332 0.8147
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.