Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionSignaturefd, Llc
Latest Disclosed Ownership23,132 shares
Latest Disclosed Value $ 3,145,294
Signaturefd, Llc ownership in GLW / Corning Incorporated

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 23,132 shares of Corning Incorporated (MX:GLW) valued at $3,145,294 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 26,042 shares of Corning Incorporated. This represents a change in shares of -11.17% during the quarter.

Signaturefd, Llc has a history of taking positions in derivatives of the underlying security (GLW) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:GLW / Corning Incorporated Historical Put/Call Ratio
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)
2026-04-07 2026-03-31 13F CORNING COM 219350105 23,132 -2,910 -11.17 3,145 37.94 0.0482
2026-01-20 2025-12-31 13F CORNING COM 219350105 26,042 524 2.05 2,280 8.93 0.0348
2025-10-21 2025-09-30 13F CORNING COM 219350105 25,518 645 2.59 2,093 60.02 0.0330
2025-07-16 2025-06-30 13F CORNING COM 219350105 24,873 1,188 5.02 1,308 20.66 0.0223
2025-05-02 2025-03-31 13F CORNING COM 219350105 23,685 485 2.09 1,084 -1.63 0.0205
2025-02-10 2024-12-31 13F CORNING COM 219350105 23,200 449 1.97 1,102 7.30 0.0209
2024-10-21 2024-09-30 13F CORNING COM 219350105 22,751 -1,441 -5.96 1,027 9.37 0.0196
2024-07-29 2024-06-30 13F CORNING COM 219350105 24,192 2,933 13.80 940 34.14 0.0191
2024-05-03 2024-03-31 13F CORNING COM 219350105 21,259 1,352 6.79 701 15.51 0.0148
2024-02-01 2023-12-31 13F CORNING COM 219350105 19,907 11,774 144.77 606 145.34 0.0140
2023-11-03 2023-09-30 13F CORNING COM 219350105 8,133 231 2.92 248 -10.51 0.0065
2023-08-01 2023-06-30 13F CORNING COM 219350105 7,902 -1,656 -17.33 277 -18.10 0.0071
2023-04-28 2023-03-31 13F CORNING COM 219350105 9,558 -962 -9.14 337 0.60 0.0092
2023-01-30 2022-12-31 13F CORNING COM 219350105 10,520 499 4.98 336 15.12 0.0098
2022-11-08 2022-09-30 13F CORNING COM 219350105 10,021 -867 -7.96 291 -15.16 0.0100
2022-08-10 2022-06-30 13F CORNING COM 219350105 10,888 719 7.07 343 -8.53 0.0117
2022-05-02 2022-03-31 13F CORNING COM 219350105 10,169 140 1.40 375 0.54 0.0113
2022-01-25 2021-12-31 13F CORNING COM 219350105 10,029 -1,271 -11.25 373 -9.47 0.0115
2021-10-28 2021-09-30 13F CORNING COM 219350105 11,300 946 9.14 412 -2.60 0.0142
2021-07-26 2021-06-30 13F CORNING COM 219350105 10,354 159 1.56 423 -4.73 0.0169
2021-04-30 2021-03-31 13F CORNING COM 219350105 10,195 3,823 60.00 444 93.89 0.0196
2021-02-11 2020-12-31 13F CORNING COM 219350105 6,372 -154 -2.36 229 8.02 0.0108
2020-11-03 2020-09-30 13F CORNING COM 219350105 6,526 -1,109 -14.53 212 7.07 0.0114
2020-07-30 2020-06-30 13F CORNING COM 219350105 7,635 -498 -6.12 198 18.56 0.0120
2020-04-23 2020-03-31 13F CORNING COM 219350105 8,133 1,081 15.33 167 -18.54 0.0144
2020-02-05 2019-12-31 13F CORNING COM 219350105 7,052 119 1.72 205 3.54 0.0151
2019-10-16 2019-09-30 13F CORNING COM 219350105 6,933 -3,408 -32.96 198 -42.44 0.0163
2019-07-31 2019-06-30 13F CORNING COM 219350105 10,341 2,995 40.77 344 41.56 0.0298
2019-05-09 2019-03-31 13F CORNING COM 219350105 7,346 -11,801 -61.63 243 -57.96 0.0207
2019-02-13 2018-12-31 13F CORNING COM 219350105 19,147 395 2.11 578 -12.69 0.0539
2018-11-14 2018-09-30 13F CORNING COM 219350105 18,752 656 3.63 662 32.93 0.0673
2018-08-14 2018-06-30 13F CORNING COM 219350105 18,096 -658 -3.51 498 -4.78 0.0556
2018-05-08 2018-03-31 13F CORNING COM 219350105 18,754 4,610 32.59 523 15.71 0.0613
2018-02-13 2017-12-31 13F CORNING COM 219350105 14,144 463 3.38 452 10.51 0.0545
2017-11-14 2017-09-30 13F CORNING COM 219350105 13,681 88 0.65 409 0.25 0.0543
2017-08-14 2017-06-30 13F CORNING COM 219350105 13,593 722 5.61 408 17.24 0.0593
2017-05-15 2017-03-31 13F CORNING COM 219350105 12,871 228 1.80 348 13.36 0.0516
2017-02-14 2016-12-31 13F CORNING COM 219350105 12,643 -1,613 -11.31 307 -8.90 0.0516
2016-11-14 2016-09-30 13F CORNING COM 219350105 14,256 1,413 11.00 337 28.14 0.0492
2016-07-29 2016-06-30 13F CORNING COM 219350105 12,843 -4,709 -26.83 263 -28.34 0.0384
2016-05-12 2016-03-31 13F CORNING COM 219350105 17,552 639 3.78 367 18.77 0.0626
2016-01-22 2015-12-31 13F CORNING COM 219350105 16,913 119 0.71 309 7.29 0.0598
2015-10-23 2015-09-30 13F CORNING COM 219350105 16,794 611 3.78 288 -9.72 0.0657
2015-07-15 2015-06-30 13F CORNING COM 219350105 16,183 45 0.28 319 -12.84 0.0692
2015-04-15 2015-03-31 13F CORNING COM 219350105 16,138 0 0.00 366 -1.08 0.0887
2015-02-13 2014-12-31 13F CORNING COM 219350105 16,138 5,100 46.20 370 73.71 0.0920
2014-11-13 2014-09-30 13F CORNING COM 219350105 11,038 -430 -3.75 213 -15.48 0.0694
2014-08-14 2014-06-30 13F CORNING COM 219350105 11,468 3,340 41.09 252 49.11 0.0877
2014-05-16 2014-03-31 13F CORNING COM 219350105 8,128 550 7.26 169 25.19 0.0680
2014-02-11 2013-12-31 13F CORNING COM 219350105 7,578 0 0.00 135 21.62 0.0492
2013-11-13 2013-09-30 13F CORNING COM 219350105 7,578 7,559 39,784.21 111 0.0475
2013-08-14 2013-06-30 13F CORNING COM 219350105 19 19 0 0.0000
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2020-04-23 2020-03-31 13F CORNING COM Call 0 -100.00 0 n/a n/a n/a
2020-02-05 2019-12-31 13F CORNING COM Call 400 0 n/a n/a n/a
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.