Corning Incorporated

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 2,214 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• Corning does not file Form 13F under CIK 0000024741. The EDGAR submissions JSON for this CIK (checked 17 August 2026) contains no 13F-HR or 13F-NT of any vintage, consistent with Corning being an operating company rather than an institutional investment manager.
• The holdings list is empty and that is a sourced finding, not a gap. The FY2025 Form 10-K (period ended 31 December 2025, filed 12 February 2026) and the Q2 FY2026 Form 10-Q (period ended 30 June 2026, filed 29 July 2026) were searched for 'equity method', 'unconsolidated', 'non-marketable', 'nonmarketable', 'measurement alternative', 'joint venture', 'strategic investment', 'unrealized gain' and 'cost method'. The 10-K discloses a single combined balance: 'Corning had investments in affiliated companies accounted for by the equity method totaling $302 million and $290 million' as of 31 December 2025 and 2024 respectively. All equity investments that do not result in consolidation and are not accounted for under the equity method are separately measured at fair value (or, for those without readily determinable fair values, under the measurement alternative: cost less impairment, plus or minus observable price changes), but no dollar figure, investee name or ownership percentage is broken out for that bucket in either filing. Per the brief, a combined equity-method total covering multiple investees sizes none of them individually, so no holding row is recorded and this combined figure is placed here instead.
• Hemlock Semiconductor Group (HSG) is Corning's most prominent historical joint venture (with Shin-Etsu Handotai and Mitsubishi Materials/Mitsubishi Materials Techno as the other original partners), but it is reported in the FY2025 10-K as 'Hemlock and Emerging Growth Businesses', a consolidated reportable segment with its own net sales ($1,460 million in 2025) and net income line, alongside Corning's other four segments. No noncontrolling interest, 'joint venture' equity stake, or minority-interest line was found anywhere in the FY2025 10-K or Q2 FY2026 10-Q relating to HSG (searched 'noncontrolling interest', 'Noncontrolling Interests', 'consolidated joint venture', 'Shin-Etsu', 'Mitsubishi'; none found), so as filed HSG currently reads as wholly or effectively wholly consolidated rather than an equity-method position, and is excluded from holdings as a consolidated business per the brief. This could not be independently confirmed against an ownership-percentage disclosure and is flagged in unknowns.
• Corning's 2013 Framework Agreement with Dow Corning Corporation and The Dow Chemical Company, executed via a December 2015 Transaction Agreement, converted Corning's roughly 50% interest in the former Dow Corning joint venture into a stake in Hemlock Semiconductor Group (via HS Upstate Inc.); this is exhibit-referenced history in the 10-K's exhibit index, not a current, separately disclosed equity position.
• Corning's strategic relationship with Apple (glass supply agreements funded in part through Apple's Advanced Manufacturing Fund, first announced 2017 and extended 2019) was checked in the FY2025 10-K: only a product-collaboration reference to Apple (Gorilla Glass / Ceramic Shield for iPhone) was found, and the term 'Advanced Manufacturing Fund' does not appear anywhere in the filing. Based on the filing record searched, this reads as a customer prepayment and capital-equipment funding arrangement for Corning's US manufacturing capacity, not an Apple equity stake in Corning or a Corning equity stake tied to Apple; no equity security was found on either side of this relationship in the filings checked.
• Samsung Display Co., Ltd. (SDC) is a strategic holder of Corning common stock (register direction), not a Corning holding: SDC received Corning shares under a 2013 Framework Agreement tied to the sale of Samsung Corning Precision Materials and related LCD-glass transactions. The register figure is 74,000,000 shares (8.6 percent), from SDC's own Schedule 13G/A Amendment No. 3 filed 22 November 2024, event date 30 October 2024. That is the most recent filed beneficial-ownership figure and it makes SDC the second largest holder of Corning, ahead of BlackRock. Three figures for this position exist and are reconciled rather than overwritten: 74,000,000 (13G/A, 30 Oct 2024, used here); 68,000,000 cited in Corning's 2026 proxy and sourced there to an earlier Schedule 13G/A as of 31 December 2023; and 22,000,000, which is NOT a holding at all but the number of SDC-held shares that the 2021 Share Repurchase Agreement allows to be offered back to Corning in tranches across calendar years 2024 to 2027, per the Q2 FY2026 10-Q. Reading that 22,000,000 as SDC's current position would understate the largest strategic stake in the company by roughly 52 million shares.
• Register denominators, kept apart per the brief: the 30 June 2026 13F rows (BlackRock, State Street, JPMorgan, FMR, Morgan Stanley, Geode) use 861,388,331 shares outstanding, from the Q2 FY2026 10-Q cover as of 24 July 2026. The Vanguard row is for the quarter ended 31 December 2025 (Vanguard's own CIK 0000102909 filed Form 13F-NT, a notice only, for the quarters ended 31 March 2026 and 30 June 2026, so no more recent Vanguard share count is available under this CIK) and its percentage uses 857,948,109 shares outstanding from the FY2025 10-K cover as of 30 January 2026. The insider and BNY Mellon trust rows use the 2026 proxy statement's own denominator of 857,757,208 shares as of 31 December 2025. The SDC row uses its own Schedule 13G/A denominator of 856,208,758 shares as of the 30 October 2024 event date, kept separate from the 13F cohort for the same reason.
• Proxy disagreement, recorded rather than resolved. The 2026 DEF 14A's own beneficial ownership table lists The Vanguard Group at 98,246,749 shares (11.45%) and BlackRock, Inc. at 60,192,751 shares (7.02%), both sourced by the proxy to Schedule 13G/A filings as of 31 December 2023, which are stale relative to each manager's own more recent Form 13F-HR figures used in the register above (Vanguard as of 31 Dec 2025, BlackRock as of 30 Jun 2026). The register uses the managers' own, more recent 13F data.
• The market capitalisation of $142.98 billion is the figure published by stockanalysis.com as of 14 August 2026, at a closing price of $165.99. Cross-check: 861,388,331 shares x $165.99 implies approximately $142.98 billion, consistent. Corning's stock traded as high as $271.78 in the 52 weeks to 14 August 2026 (per stockanalysis.com), with a sharp decline of roughly 46% in July 2026 followed by a partial recovery; this explains why the 30 June 2026 Form 13F valuations in the register above (implying a price near $255 per share) are much higher than the 14 August 2026 market value used for market_cap_usd, and is not a data error.
• Corning has a single class of common stock, $0.50 par value per share, one vote per share. There is no dual-class structure and no founder control block; Wendell P. Weeks, the current Chairman, CEO and President, beneficially owns well under 1% of shares outstanding.
• Insider rows overlap. 'All Directors and Executive Officers as a group (25 persons)' contains the individually listed Wendell P. Weeks row above and must not be summed with it; it is marked as an aggregate with residual_label for members not individually named. Separately, the Bank of New York Mellon 401(k) trust row (5,565,018 shares, all plan participants) is a much broader population than the officers group and is not additive to it, though it includes the small equivalent-share allocations of a few named officers as a subset; this is explained in that row's method_note rather than a rolls_up_into link, since the trust row is not itself contained within, nor does it contain, the officers group as a strict subset relationship.
• NVIDIA appears on the register through warrants rather than purchased stock. Corning issued a pre-funded warrant over 3,000,000 shares for $500 million cash and a traditional warrant over up to 15,000,000 shares at $180.00, both on 6 May 2026. Only the pre-funded shares are recorded as a holding, because Corning itself treats them as outstanding for earnings per share; the traditional warrant is a contingent right and is described in that row's method_note rather than counted.