Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionBoothbay Fund Management, Llc
Latest Disclosed Ownership46,905 shares
Latest Disclosed Value $ 6,377,673
Boothbay Fund Management, Llc ownership in GLW / Corning Incorporated

On May 15, 2026 - Boothbay Fund Management, Llc filed a 13F-HR form disclosing ownership of 46,905 shares of Corning Incorporated (MX:GLW) valued at $6,377,673 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 67,858 shares of Corning Incorporated. This represents a change in shares of -30.88% during the quarter.

Boothbay Fund Management, 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 135,400 of underlying shares valued at $18,410,338 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)
2026-05-15 2026-03-31 13F CORNING COM 219350105 46,905 -20,953 -30.88 6,378 7.34 0.0826
2026-02-17 2025-12-31 13F CORNING COM 219350105 67,858 59,702 732.00 5,942 788.04 0.0886
2025-11-14 2025-09-30 13F CORNING COM 219350105 8,156 -228,113 -96.55 669 -94.62 0.0097
2025-08-14 2025-06-30 13F CORNING COM 219350105 236,269 52,722 28.72 12,425 47.88 0.2414
2025-05-15 2025-03-31 13F CORNING COM 219350105 183,547 178,352 3,433.15 8,403 3,315.45 0.2214
2025-02-14 2024-12-31 13F CORNING COM 219350105 5,195 5,195 247 0.0061
2024-08-14 2024-06-30 13F CORNING COM 219350105 0 -19,857 -100.00 0 -100.00
2024-05-15 2024-03-31 13F CORNING COM 219350105 19,857 -3,067 -13.38 654 -6.30 0.0126
2024-02-14 2023-12-31 13F CORNING COM 219350105 22,924 22,924 698 0.0178
2023-11-14 2023-09-30 13F CORNING COM 219350105 0 -8,891 -100.00 0 -100.00
2023-08-14 2023-06-30 13F CORNING COM 219350105 8,891 8,891 312 0.0068
2023-02-14 2022-12-31 13F CORNING COM 219350105 0 -10,780 -100.00 0 -100.00
2022-11-14 2022-09-30 13F CORNING COM 219350105 10,780 10,780 313 0.0078
2022-08-15 2022-06-30 13F CORNING COM 219350105 0 -12,382 -100.00 0 -100.00
2022-05-16 2022-03-31 13F CORNING COM 219350105 12,382 2,269 22.44 457 21.22 0.0106
2022-02-14 2021-12-31 13F CORNING COM 219350105 10,113 3,576 54.70 377 57.74 0.0089
2021-11-15 2021-09-30 13F CORNING COM 219350105 6,537 -1,399 -17.63 239 -26.46 0.0066
2021-08-17 2021-06-30 13F/A-1 CORNING COM 219350105 7,936 1,836 30.10 325 22.64 0.0104
2021-08-16 2021-06-30 13F CORNING COM 219350105 7,936 1,836 325 0.0102
2021-05-17 2021-03-31 13F CORNING COM 219350105 6,100 -3,900 -39.00 265 -26.39 0.0099
2021-02-12 2020-12-31 13F CORNING COM 219350105 10,000 400 4.17 360 15.76 0.0134
2020-11-16 2020-09-30 13F CORNING COM 219350105 9,600 -400 -4.00 311 20.08 0.0188
2020-08-14 2020-06-30 13F CORNING COM 219350105 10,000 -5,000 -33.33 259 -15.91 0.0177
2020-05-15 2020-03-31 13F CORNING COM 219350105 15,000 7,764 107.30 308 45.97 0.0255
2020-02-14 2019-12-31 13F CORNING COM 219350105 7,236 7,236 211 0.0184
2018-05-14 2018-03-31 13F CORNING COM 219350105 0 -14,282 -100.00 0 -100.00
2018-02-14 2017-12-31 13F CORNING COM 219350105 14,282 14,282 457 0.0669
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
(%)
2026-05-15 2026-03-31 13F CORNING COM Call 135,400 18,410 n/a n/a n/a
2023-02-14 2022-12-31 13F CORNING COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F CORNING COM Call 25,100 -75.70 728 -77.63 n/a n/a n/a
2022-08-15 2022-06-30 13F CORNING COM Call 103,300 3,255 n/a n/a n/a
2017-05-15 2017-03-31 13F CORNING COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-16 2016-12-31 13F/A CORNING COM Call 8,600 209 n/a n/a n/a
2017-07-18 2016-12-31 13F/A CORNING COM Call 8,600 209 n/a n/a n/a
2017-02-15 2016-12-31 13F CORNING COM Call 86 2 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.