Eaton Corporation plc

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 2,477 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

• Eaton Corporation plc is Irish-domiciled but files as a US domestic registrant: its EDGAR submissions history (CIK 0001551182, checked 17 August 2026) contains 10-K and 10-Q filings, not 20-F. The basis enum used here is filed_10k / filed_13f / proxy_statement, not filed_20f.
• Eaton has no Form 13F-HR filings under its own CIK (it is not an institutional investment manager reporting client positions), so the register is built entirely from each institution's own 13F-HR plus the DEF 14A proxy for insiders, per the brief.
• Holdings are limited to two named equity-method investees disclosed in Note 2 (Acquisitions and Divestiture of Businesses) of the FY2025 Form 10-K (period ended 31 December 2025, filed 26 February 2026): a 49 percent stake in Jiangsu Ryan Electrical Co. Ltd. (acquired 23 April 2023, China, power distribution and sub-transmission transformers) and a 49 percent stake in NordicEPOD AS (acquired 31 May 2024, Nordic data-center power modules). Both are private and both are reported within the Electrical Global segment.
• Neither Jiangsu Ryan nor NordicEPOD has a disclosed carrying value or fair value on its own. The 10-K states only a combined figure: 'Investments in associate companies included in Other assets on the Consolidated Balance Sheets were $903 million and $872 million as of December 31, 2025 and 2024, respectively.' Per the brief, a combined balance covering multiple investees sizes none of them individually, so value_usd is null on both holding rows and the $903 million combined figure is recorded here rather than split. Income from these investments (combined) was $8 million for 2025, $12 million for 2024 and $20 million for 2023, per the same note.
• The Q2 FY2026 Form 10-Q (period ended 30 June 2026, filed 31 July 2026) was searched in full for 'equity method', 'unconsolidated', 'non-marketable', 'measurement alternative', 'Jiangsu' and 'NordicEPOD': none appear. Equity-method investee detail is disclosed annually in the 10-K, not repeated each quarter, which is normal disclosure practice; there is no indication in the 10-Q that the two positions changed.
• Fibrebond Corporation (acquired 1 April 2025), Resilient Power Systems Inc. (acquired 6 August 2025), Ultra PCS Limited (acquired 23 January 2026, $1.53 billion) and the pending Boyd Thermal acquisition (agreement signed 2 November 2025, $9.5 billion, expected to close Q2 2026) are all full (100 percent) acquisitions accounted for under the acquisition method, not equity-method stakes, and are excluded here as wholly owned subsidiaries per the brief.
• Eaton's proxy identifies two holders above 5 percent, but both are sourced to Schedule 13G/A filings from early 2024 (Vanguard: 36,595,016 shares / 9.43 percent as of 29 December 2023; BlackRock: 27,300,838 shares as of 31 December 2023) and are stale relative to each manager's own 30 June 2026 (or, for Vanguard, 31 December 2025) Form 13F-HR used in the register. The register uses the fresher 13F figures and records this disagreement here rather than resolving it by overwriting either source.
• Vanguard's most recent 13F-HR on file for Eaton is for the quarter ended 31 December 2025 (filed 29 January 2026); no fresher Vanguard 13F-HR figure was located for 31 March or 30 June 2026 within the time budget, so the Vanguard row is dated three quarters behind the other institutional rows and uses a different shares-outstanding denominator (387,900,000 as of 31 January 2026, from the FY2025 10-K cover) than the 30 June 2026 rows (388,400,000).
• Shares outstanding of 388,400,000 as of 30 June 2026 is Eaton's own filed cover-page figure (dei:EntityCommonStockSharesOutstanding), rounded to the nearest 100,000 as filed; it is not a more precise count.
• Eaton has a single class of ordinary shares, one vote per share; no dual-class structure. Insider ownership is immaterial: all directors and executive officers as a group hold 0.10 percent of the company per the 2026 proxy's beneficial ownership table (record date 1 February 2026), and no individual director or named executive officer holds more than 0.03 percent. There is no founder or control-block story comparable to Broadcom's Henry Samueli.
• No Schedule 13D or 13G/A has been filed against Eaton common stock since 12 November 2024, per the EDGAR filing index for CIK 0001551182; that removes any independent, more recent cross-check on the largest holders beyond each manager's own 13F.
• Market capitalisation of $175.37 billion is the figure published on stockanalysis.com as of 14 August 2026, implying a share price of roughly $451.51; cross-checked against 388,400,000 shares outstanding, which is consistent to within rounding.