Edison International

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 1,038 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

• Edison International's Q2 2026 10-Q (eix-20260630.htm) is a COMBINED report filed jointly by Edison International (CIK 0000827052) and its wholly owned subsidiary Southern California Edison Company (SCE), as is standard for this filer. The cover page lists shares outstanding separately for each registrant as of 23 Jul 2026: 'Edison International 384,813,979 Shares' and 'Southern California Edison Company 434,888,104 Shares'. Every figure in this file (shares outstanding, income statement lines) was taken from the Edison International column/entity, never the SCE column; SCE's own share count belongs entirely to Edison International as sole shareholder and is not a public float.
• Holdings search: the Q2 2026 10-Q and the FY2025 10-K (eix-20251231.htm) were searched for 'equity method', 'unconsolidated', 'joint venture', 'investment in', 'noncontrolling interest', 'preferred securities', 'decommissioning trust', 'investee', and named entities (Edison Energy, SCE Trust, Palo Verde, San Onofre, Mesa Wind, Four Corners, Mohave). Subsidiaries and related entities examined and excluded as wholly owned/consolidated: Southern California Edison Company (SCE, the main operating utility), Edison Energy, LLC dba 'Trio' (indirect wholly-owned non-utility subsidiary), Edison Insurance Services, Inc. (EIS, wholly-owned captive insurer), and SCE Trust II/IV/V/VI/VII/VIII (wholly-owned, consolidated special-purpose financing trusts, see next note). Edison International Foundation and 'Powering Progress' appear as unconsolidated 501(c)(3)/501(c)(4) not-for-profit membership organisations in the FY2025 10-K; these are not equity/ownership stakes of any kind and are excluded. No holding rows were created: no equity-method investees, joint ventures, or minority strategic/venture stakes were found in either filing.
• Nuclear decommissioning trust funds are NOT holdings. The 10-Q has 24 hits for 'decommissioning trust': these are securities portfolios (the filing separately shows corporate stocks, corporate bonds, common/collective funds, partnerships/joint ventures and other investment entities inside the trusts) held by SCE solely to fund the future retirement of San Onofre and Palo Verde, per rate-recovery mechanisms, not strategic equity stakes in other companies. Excluded per the brief.
• SCE holds direct fractional ownership interests in two nuclear generating stations, accounted for in the filings as 'Jointly Owned Utility Plant' (a Property, Plant & Equipment line, per FY2025 10-K Note 2), not as equity/shares in a company: a 15.8% ownership interest in the Palo Verde Nuclear Generating Station (near Phoenix, AZ, co-owned with APS and other utilities) and a 78.21% ownership interest in the retired San Onofre station. Neither Palo Verde nor San Onofre is a corporation with tradable shares; both are excluded here as direct undivided interests in physical plant, not equity holdings in another company.
• California's Wildfire Fund (established under AB 1054, expanded under SB 254) and related wildfire insurance/reimbursement arrangements (61 and 20 hits respectively in the 10-Q) are a state-administered insurance/reimbursement mechanism SCE participates in and draws from for wildfire liability costs. This is not an equity stake of Edison's in any entity and is excluded per the brief.
• 'Noncontrolling interests - preference stock of SCE' ($1,564 million at 30 Jun 2026, $1,680 million at 31 Dec 2025) is preference stock issued BY the subsidiary utility (SCE) to third parties, largely through SCE Trust II, IV, V, VI, VII and VIII, special-purpose financing entities that in turn issue publicly-held Trust Preference Securities backed by that SCE preference stock. This runs in the REVERSE direction: it is a minority interest held by third parties in Edison's own consolidated group, not a holding of Edison's in another company, and is excluded per the brief's explicit warning on this point.
• Register self-gate, computed on this final file using the brief's own formula (aggregate 'Directors, Director Nominees and Executive Officers as a Group' row reduced by its one named member, Pedro J. Pizarro, to avoid double counting; Pizarro's row counted at full value): 11 rows, 192,887,354 shares against 384,813,979 shares outstanding = 50.12% of the company. This is within the brief's expected band (below 55%) but toward the high end, driven by three very large passive managers (Vanguard 13.69%, BlackRock 11.66%, State Street 9.39%, summing to 34.7% alone) plus an unusually large AQR Capital Management position (4.86%).
• Vanguard family: 7 successor entities were re-checked against fresh Q2 2026 (period 2026-06-30) 13F-HR filings, all sourced directly from EDGAR via scripts/filing.py, not from the project's existing pre-built register (data/registers/EIX.json, which is from Q1 2026 13F data and was used only to identify which 7 CIKs to check). The parent, Vanguard Group Inc (CIK 0000102909), filed Form 13F-NT (notice, no holdings) for Q2 2026, confirming the successors are the position per the standard rule. No Vanguard CIK beyond these 7 was checked.
• Capital Group and T. Rowe Price, called out in the chunk prompt as families needing a full entity sweep, do not appear in the top ~40 holders of this project's existing EIX 13F register and were not separately searched by name for this file, given the time budget; if either holds EIX it is evidently below the threshold that would place it among the top 8-12 holders reported here.
• The proxy's 5%-holder table (as of 31 Dec 2025) sources Vanguard, BlackRock and State Street from stale Schedule 13G filings (dated Jul 2025, Mar 2024 and Oct 2024 respectively). Fresh Q2 2026 13F figures, all higher than the stale 13G figures, were used instead per the brief's rule; both figures are recorded in each row's method_note for reconciliation.
• Company-level market cap and current share price (as of 18 Aug 2026, market close) are sourced from stockanalysis.com, an aggregator; basis for that field is not filed. Shares outstanding (384,813,979 as of 23 Jul 2026) is instead sourced directly from the Q2 2026 10-Q cover page, filed_10q basis.
• No Schedule 13D activist, sovereign, or strategic holder was found; EDGAR shows only routine institutional 13F/13G filers among EIX's largest holders.