As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Sphere Entertainment Co. The largest reported stake is James L. Dolan's, at 14.5%. 20 filings are on record since August 13, 2025 (Schedule 13D/A, October 22, 2026).
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Key facts
- · Reporting person: James L. Dolan · Sole voting: 2,728,433 · Shared voting: 2,028,531 · Sole dispositive: 2,728,433 · Shared dispositive: 2,028,531 · SCHEDULE 13D/A, 2026-10-22
- · Holder: Gamco Investors, Inc. Et Al · Percent: 1.9% · SCHEDULE 13D/A
- · Holder: Ariel Investments, LLC · Percent: 5.8% · SCHEDULE 13G/A
- · Holder: Morgan Stanley · Percent: 8.3% · SCHEDULE 13G/A
- · Holder: Ariel Investments, LLC · Percent: 8.6% · SCHEDULE 13G/A
Sphere Entertainment Co. has 20 Schedule 13D or 13G filings on record since 2025-08-13. 5 holders' latest filing reports 5% or more of class a common stock, par value $.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 14.5% | 4,756,964 | SCHEDULE 13D/A, 2026-10-22 | 2026-10-20 | |
| BlackRock, Inc. | 13.5% | 3,853,804 | SCHEDULE 13G, 2026-04-07 | 2026-03-31 |
| 8.3% | 2,410,126 | SCHEDULE 13G/A, 2026-08-12 | 2026-06-30 | |
| Ariel Investments, LLC | 5.8% | 1,665,326 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Vanguard Portfolio Management | 5.42% | 1,552,204 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| Bank Of Nova Scotia | 3.06% | 894,262 | SCHEDULE 13G/A, 2026-01-27 | 2025-12-31 |
| Gamco Investors, Inc. Et Al | 1.9% | 80 | SCHEDULE 13D/A, 2026-08-14 | 2026-08-13 |
| Point72 Asset Management, L.P. | 0.8% | 223,464 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Sphere Entertainment Co. and the records around it.
Sphere Entertainment Co. elsewhere on the record
Companies that share a holder
- James L. Dolan also filed stake reports on 4 other companies: MSG Rangers Corp. (Nov 2026), Madison Square Garden Entertainment Corp. (Mar 2026), Madison Square Garden Sports Corp. (Mar 2026)
- Ariel Investments, LLC also filed stake reports on 13 other companies: Lindblad Expeditions Holdings (Aug 2026), Madison Square Garden Entertai (Aug 2026), Mattel Inc (Aug 2026)
- BANK OF NOVA SCOTIA also filed stake reports on 19 other companies: CENTRUS ENERGY CORP (Oct 2026), CLEANSPARK, INC. (Oct 2026), Haymaker Acquisition Corp V (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| James L. Dolan | 2,728,433 | 2,028,531 | 2,728,433 | 2,028,531 | SCHEDULE 13D/A, 2026-10-22 |
| Thomas C. Dolan | 29,355 | 1,204,735 | 29,355 | 1,204,735 | SCHEDULE 13D/A, 2026-10-22 |
| Kathleen M. Dolan, individually and as Trustee of certain trusts described herein | 17,696 | 3,674,847 | 17,696 | 3,674,847 | SCHEDULE 13D/A, 2026-10-22 |
| Marianne Dolan Weber | 11,606 | 1,233,751 | 11,606 | 1,233,751 | SCHEDULE 13D/A, 2026-10-22 |
| Deborah A. Dolan-Sweeney | 10,419 | 1,214,136 | 10,419 | 1,214,136 | SCHEDULE 13D/A, 2026-10-22 |
| Patrick F. Dolan | 1,075 | 56,947 | 1,075 | 56,947 | SCHEDULE 13D/A, 2026-10-22 |
| Corby Dolan Leinauer, as Trustee of certain trusts described herein | 42 | 3,681,867 | 42 | 3,681,867 | SCHEDULE 13D/A, 2026-10-22 |
| Mary S. Dolan, as Trustee of certain trusts described herein | 3,453 | 4,277,198 | 3,453 | 4,277,198 | SCHEDULE 13D/A, 2026-10-22 |
| Paul J. Dolan, as Trustee of certain trusts described herein | 46,607 | 1,506,024 | 46,607 | 1,506,024 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan Children Trust FBO Kathleen M. Dolan | 488,579 | 0 | 488,579 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan Children Trust FBO Deborah Dolan-Sweeney | 535,276 | 0 | 535,276 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan Children Trust FBO Marianne Dolan Weber | 474,339 | 0 | 474,339 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan Children Trust FBO Thomas C. Dolan | 488,579 | 0 | 488,579 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan Children Trust FBO James L. Dolan | 960,498 | 0 | 960,498 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO James L. Dolan | 1,053,283 | 0 | 1,053,283 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO Thomas C. Dolan | 716,156 | 0 | 716,156 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO Kathleen M. Dolan | 621,308 | 0 | 621,308 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO Marianne E. Dolan Weber | 653,144 | 0 | 653,144 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO Deborah A. Dolan-Sweeney | 578,498 | 0 | 578,498 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Charles F. Dolan 2009 Family Trust FBO Patrick F. Dolan | 56,947 | 0 | 56,947 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Ryan Dolan 1989 Trust | 7,659 | 0 | 7,659 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Tara Dolan 1989 Trust | 7,659 | 0 | 7,659 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Marianne E. Dolan Weber 2012 Descendants Trust | 56,948 | 0 | 56,948 | 0 | SCHEDULE 13D/A, 2026-10-22 |
| Kathleen M. Dolan 2012 Descendants Trust | 56,947 | 0 | 56,947 | 0 | SCHEDULE 13D/A, 2026-10-22 |
The latest filing identifies Sphere Entertainment Co. by CUSIP 55826T102 and gives its principal executive office as TWO PENNSYLVANIA PLAZA, NEW YORK, NY 10121 (SCHEDULE 13D/A, 2026-10-22).
Purpose of Transaction (Item 4)
Gamco Investors, Inc. Et Al
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.Item 4 of the SCHEDULE 13D/A filed 2026-08-14
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-13 | Ariel Investments, LLC | 24.4% | SCHEDULE 13G/A |
| 2025-09-10 | James L. Dolan | 13.1% | SCHEDULE 13D/A |
| 2025-10-06 | Bank Of Nova Scotia | 5.87% | SCHEDULE 13G |
| 2025-11-07 | Morgan Stanley | 6% | SCHEDULE 13G |
| 2025-11-14 | Point72 Asset Management, L.P. | 0.8% | SCHEDULE 13G/A |
| 2025-11-14 | Ariel Investments, LLC | 20.6% | SCHEDULE 13G/A |
| 2025-12-05 | Ariel Investments, LLC | 14.4% | SCHEDULE 13G/A |
| 2026-01-27 | Bank Of Nova Scotia | 3.06% | SCHEDULE 13G/A |
| 2026-02-13 | Ariel Investments, LLC | 11.1% | SCHEDULE 13G/A |
| 2026-02-27 | James L. Dolan | 13% | SCHEDULE 13D/A |
| 2026-03-09 | James L. Dolan | 13% | SCHEDULE 13D/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-07 | BlackRock, Inc. | 13.5% | SCHEDULE 13G |
| 2026-04-29 | Vanguard Portfolio Management | 5.42% | SCHEDULE 13G |
| 2026-05-12 | Morgan Stanley | 7% | SCHEDULE 13G/A |
| 2026-05-14 | Ariel Investments, LLC | 8.6% | SCHEDULE 13G/A |
| 2026-08-12 | Morgan Stanley | 8.3% | SCHEDULE 13G/A |
| 2026-08-14 | Gamco Investors, Inc. Et Al | 1.9% | SCHEDULE 13D/A |
| 2026-08-14 | Ariel Investments, LLC | 5.8% | SCHEDULE 13G/A |
| 2026-10-22 | James L. Dolan | 14.5% | SCHEDULE 13D/A |
Questions about who owns Sphere Entertainment Co.
Who owns Sphere Entertainment Co.?
On this page, 5 holders' latest ownership filings report 5% or more of Sphere Entertainment Co.: James L. Dolan (14.5%, Schedule 13D/A, filed 2026-10-22), BlackRock, Inc. (13.5%, Schedule 13G, filed 2026-04-07), Morgan Stanley (8.3%, Schedule 13G/A, filed 2026-08-12), Ariel Investments, LLC (5.8%, Schedule 13G/A, filed 2026-08-14) and Vanguard Portfolio Management (5.42%, Schedule 13G, filed 2026-04-29).
Who are the largest shareholders of Sphere Entertainment Co.?
By the share each holder's latest filing reports, the largest holders of Sphere Entertainment Co. on this page are James L. Dolan (14.5%), BlackRock, Inc. (13.5%) and Morgan Stanley (8.3%).
When did James L. Dolan buy into Sphere Entertainment Co.?
The filings give report dates, not purchase dates. The earliest filing from James L. Dolan on this page is the Schedule 13D/A, filed 2025-09-10, reporting 13.1%; its latest, Schedule 13D/A filed 2026-10-22, reports 14.5%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 20 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.