Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionKovack Advisors, Inc.
Latest Disclosed Ownership17,083 shares
Latest Disclosed Value $ 2,343,540
Kovack Advisors, Inc. reports 31.44% increase in ownership of GLW / Corning Incorporated

On May 12, 2026 - Kovack Advisors, Inc. filed a 13F-HR form disclosing ownership of 17,083 shares of Corning Incorporated (MX:GLW) valued at $2,343,540 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 12,997 shares of Corning Incorporated. This represents a change in shares of 31.44% 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)
2026-05-12 2026-03-31 13F CORNING COM 219350105 17,083 4,086 31.44 2,344 105.89 0.1250
2026-02-17 2025-12-31 13F/A-1 CORNING COM 219350105 12,997 12,997 1,138 0.0529
2026-02-12 2025-12-31 13F CORNING COM 219350105 12,997 12,997 230
2021-11-03 2021-09-30 13F CORNING ORD ORD 219350105 0 -13,014 -100.00 0 -100.00
2021-07-29 2021-06-30 13F CORNING ORD ORD 219350105 13,014 -2,695 -17.16 532 -22.11 0.0606
2021-05-04 2021-03-31 13F CORNING ORD ORD 219350105 15,709 1,714 12.25 683 35.52 0.0888
2021-01-14 2020-12-31 13F CORNING ORD ORD 219350105 13,995 393 2.89 504 14.29 0.0725
2020-11-02 2020-09-30 13F CORNING ORD ORD 219350105 13,602 3,502 34.67 441 68.32 0.0785
2020-07-31 2020-06-30 13F CORNING ORD ORD 219350105 10,100 11 0.11 262 26.57 0.0510
2020-04-30 2020-03-31 13F CORNING ORD ORD 219350105 10,089 3 0.03 207 -29.59 0.0478
2020-01-29 2019-12-31 13F CORNING ORD ORD 219350105 10,086 -96 -0.94 294 1.38 0.0526
2019-10-31 2019-09-30 13F CORNING ORD ORD 219350105 10,182 -33 -0.32 290 -14.45 0.0595
2019-08-14 2019-06-30 13F CORNING INC COM COM 219350105 10,215 1,108 12.17 339 12.62 0.0775
2019-05-03 2019-03-31 13F CORNING INC COM COM 219350105 9,107 2,001 28.16 301 40.00 0.0751
2019-02-06 2018-12-31 13F CORNING INC COM COM 219350105 7,106 767 12.10 215 -4.02 0.0629
2018-10-09 2018-09-30 13F CORNING INC COM COM 219350105 6,339 6,339 224 0.0578
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.