Duke Energy Corporation

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 2,433 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

• GIC owns a 19.9% minority interest in Duke Energy Indiana Holdco, LLC (Duke Energy owns the remaining 80.1%). This is GIC's stake IN a Duke Energy subsidiary, not a Duke Energy holding in GIC or any other entity, so it is deliberately excluded from the holdings array. Source: FY2025 10-K, https://www.sec.gov/Archives/edgar/data/1326160/000132616026000014/duk-20251231.htm.
• An affiliate of Brookfield Super-Core Infrastructure Partners is acquiring up to a 19.7% minority interest in Florida Progress, LLC, the holding company of Duke Energy Florida, under an August 2025 investment agreement worth up to $6 billion. The first closing occurred 3 March 2026: Florida Progress issued 9.19% of its membership interests to the Brookfield affiliate for approximately $2.8 billion. This is the Brookfield affiliate's stake IN a Duke Energy subsidiary, not a Duke Energy holding, so it is excluded from the holdings array. Source: Q2 FY2026 10-Q, https://www.sec.gov/Archives/edgar/data/1326160/000132616026000040/duk-20260630.htm.
• Nuclear decommissioning trust funds ($13,590 million at 30 June 2026, $12,889 million at 31 December 2025) are excluded from holdings by decision: they are restricted funds held for a regulatory decommissioning purpose, not strategic equity stakes, even though they hold securities.
• Duke Energy sold its 50% interest in Pioneer Transmission, LLC in November 2024 (proceeds approximated carrying value) and its indirect 50% interest in DATC Path 15 Transmission LLC in March 2025. Neither is a current holding and neither is recorded.
• Duke Energy held an equity-method interest in SustainRNG, a renewable natural gas project developer, plus several SustainRNG project companies. The project-company interests were fully impaired via a $54 million pretax charge in December 2024, and Duke Energy's remaining interest in SustainRNG itself was sold in January 2026 for immaterial proceeds. Not a current holding.
• Vanguard disagreement, recorded rather than resolved. The register uses Vanguard's own Form 13F-HR for the quarter ended 31 December 2025 (78,258,757 shares), its most recent 13F-HR on file; Vanguard filed Form 13F-NT (notice, no holdings) for the quarters ended 31 March and 30 June 2026, so no fresher Vanguard 13F figure exists under CIK 0000102909. Duke Energy's 2026 proxy separately reports Vanguard at 77,841,964 shares (10%) as of 31 December 2025, sourced to a Schedule 13G/A; the two Vanguard-sourced figures for the same date differ by about 417,000 shares, most likely a scope difference between the 13F and 13G reporting populations.
• BlackRock and State Street disagreement, recorded rather than resolved. The register uses each manager's own Form 13F-HR for the quarter ended 30 June 2026 (BlackRock 70,543,988 shares; State Street 44,953,588 shares). Duke Energy's 2026 proxy reports BlackRock at 58,022,212 shares (7.52%) and State Street at 41,821,025 shares (5.42%) as of 31 December 2025, sourced to Schedule 13G/A filings, which are both older and materially lower than the 30 June 2026 13F figures used here.
• JPMorgan Chase & Co.'s 13F information table also reports a 290,000-share DUKE ENERGY CORP NEW OPTION position (CUSIP 26441C954). Per the brief's rule that derivatives are not shares, this is excluded from JPMorgan's register row and from every total in this file.
• Duke Energy has a single class of common stock, $0.001 par value, one vote per share; the register above covers only common stock. Duke Energy also has outstanding preferred stock and depositary shares, which are separate securities not counted in these share and percentage figures.
• Duke Energy has no founder or dual-class control structure. Per the 2026 proxy (as of 1 March 2026), all 29 current directors and executive officers as a group beneficially own 935,220 shares (0.1202%), well under 1%, of the 778,117,625 shares then outstanding. Individual insider holdings are correspondingly small (all print as 'less than 1%' in the proxy itself); they are recorded in full below because the brief's point is coverage of WHO holds shares, not stake size.
• The register mixes two denominators and two dates, deliberately, rather than mixing the underlying counts. The 10 institutional rows (Vanguard through JPMorgan) use 779,702,193 shares outstanding as of 31 July 2026 (Q2 FY2026 10-Q cover), matching each manager's own 13F-HR. The 21 insider rows (directors, executive officers, the group aggregate, and the two retired NEOs) use 778,117,625 shares outstanding as of 1 March 2026, the denominator the 2026 DEF 14A itself states and uses for its own 'Percent of Class' column. Each row's pct_denominator field states which count it uses; do not compare an institutional row's percentage against an insider row's percentage as if they shared a base.
• Individual insider percentages are computed here, not copied from the proxy: the DEF 14A prints '*' ('represents less than 1%') for every individual director and executive officer row and for the group total, rather than a precise figure. Each pct_of_company value in the insider rows is the reported share count divided by the proxy's own 778,117,625-share denominator, which is simple arithmetic on two filed numbers, not an estimate; each row's method_note repeats this.
• Lynn J. Good (Former Chair and CEO, retired 1 April 2025) and Julia S. Janson (Former Executive Vice President and CEO, Duke Energy Carolinas, retired 1 July 2025) are recorded as standalone insider rows, not rolled into the 'Directors and executive officers as a group (29)' row. The proxy discloses their beneficial ownership because SEC rules require reporting for anyone who appears in the Summary Compensation Table for the year, current or departed, but the group total is explicitly dated 'as of March 1, 2026' and by its own definition covers only people who were directors or executive officers on that date, which neither Good nor Janson was. The proxy contains no single sentence stating this exclusion outright; it is inferred from the group row's own dating. Consistent with that reading, the 19 individually named current directors and executive officers sum to 402,182 shares, comfortably under the 935,220-share group total (leaving room for roughly 10 further current officers not individually named), whereas including Good's and Janson's combined 432,828 shares would push the named total to 835,010, still under the group total but implausibly close to it for a company that also has unnamed current officers.
• Market capitalization of $96.62 billion is the figure published on the source page as of 14 August 2026, precise to the figures shown there; it was not independently re-derived from shares outstanding and a separate share price in this research.