Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Held by 13F filers
245,847,000
selection includes debt or preferreds — no % of shares outstanding
Holders
24
+1 vs 2026-03-31 · 3 new, 2 exited
Value
$1.2B
shares -5.3% vs prior quarter
13F holdings exceed the share count. This is normal for heavily shorted stocks: shares lent to short sellers are reported by the lender and again by whoever bought them. Related filers occasionally report the same position twice as well.
Share classes (cover page of the 10-Q filed 2026-07-30, as of 2026-07-24)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common Class A | SPHR · NYSE | 29,046,853 | 37,290,807 | 128.4% | 421 | 55826T102 |
| Common Class B | not listed | 6,866,754 | — | — |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (24 of 24 · 55826TAB8)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Linden Advisors LP | 71,452,000 | — | $350.6M | -12,088,000 (-14.5%) |
| 2 | WHITEBOX ADVISORS LLC | 61,117,000 | — | $299.4M | -3,387,000 (-5.3%) |
| 3 | Alberta Investment Management Corp | 24,750,000 | — | $121.3M | — |
| 4 | CARRONADE CAPITAL MANAGEMENT, LP | 21,384,000 | — | $104.3M | — |
| 5 | MILLENNIUM MANAGEMENT LLC | 18,589,000 | — | $91.2M | +11,179,000 (+150.9%) |
| 6 | Calamos Advisors LLC | 10,434,000 | — | $51.1M | +10,000 (+0.1%) |
| 7 | BNP PARIBAS FINANCIAL MARKETS | 9,654,000 | — | $47.3M | — |
| 8 | Point72 Asset Management, L.P. | 6,500,000 | — | $31.9M | -3,500,000 (-35.0%) |
| 9 | LORD, ABBETT & CO. LLC | 5,955,000 | — | $29.2M | +2,491,000 (+71.9%) |
| 10 | BlackRock, Inc. | 5,300,000 | — | $26.0M | +1,150,000 (+27.7%) |
| 11 | FMR LLC | 3,920,000 | — | $19.2M | -15,000 (-0.4%) |
| 12 | Luxor Capital Group, LP | 2,296,000 | — | $11.2M | — |
| 13 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 930,000 | — | $4.6M | -634,000 (-40.5%) |
| 14 | LAZARD ASSET MANAGEMENT LLC | 862,000 | — | $42K | +16,000 (+1.9%) |
| 15 | Context Capital Management, LLC | 857,000 | — | $4.2M | -3,224,000 (-79.0%) |
| 16 | MORGAN STANLEY | 750,000 | — | $3.7M | — |
| 17 | BANK OF AMERICA CORP /DE/ | 394,000 | — | $1.9M | -200,000 (-33.7%) |
| 18 | TORONTO DOMINION BANK | 299,000 | — | $1.5M | NEW |
| 19 | JPMORGAN CHASE & CO | 155,000 | — | $735K | +133,000 (+604.5%) |
| 20 | Ares Systematic Credit Ltd | 100,000 | — | $490K | — |
| 21 | Virtus Fixed Income Advisers, LLC | 88,000 | — | $431K | NEW |
| 22 | UBS Group AG | 24,000 | — | $118K | -2,000 (-7.7%) |
| 23 | VIRTUS ADVISERS, LLC | 20,000 | — | $98K | — |
| 24 | LPL Financial LLC | 17,000 | — | $83K | NEW |
Exited since 2026-03-31 (2 filers; largest 2 shown)
| SSI INVESTMENT MANAGEMENT LLC | −4,000,000 |
| Polar Capital Holdings Plc | −2,000,000 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| GAMCO Asset Management Inc. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 550,139 | 1.9% |
| Associated Capital Group, Inc. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 300 | 0% |
| Ariel Investments, LLC | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 1,665,326 | 5.8% |
| GABELLI FOUNDATION, INC. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 1,300 | 0% |
| GABELLI FUNDS LLC | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 420,987 | 1.5% |
| GABELLI MARIO J | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 4,400 | 0% |
| GABELLI & Co INVESTMENT ADVISERS, INC. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 2,420 | 0% |
| MJG ASSOCIATES, INC. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 14,500 | 0.1% |
| GGCP, INC. | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 1,700 | 0% |
| GAMCO INVESTORS, INC. ET AL | SCHEDULE 13D/A | 2026-08-14 | 2026-08-13 | 80 | 0% |
| Morgan Stanley | SCHEDULE 13G/A | 2026-08-12 | 2026-06-30 | 2,410,126 | 8.3% |
| Morgan Stanley Capital Services LLC | SCHEDULE 13G/A | 2026-08-12 | 2026-06-30 | 2,252,618 | 7.8% |
| Vanguard Portfolio Management | SCHEDULE 13G | 2026-04-29 | 2026-03-31 | 1,552,204 | 5.42% |
| BlackRock, Inc. | SCHEDULE 13G | 2026-04-07 | 2026-03-31 | 3,853,804 | 13.5% |
| The Vanguard Group | SCHEDULE 13G/A | 2026-03-27 | 2026-03-13 | 0 | 0% |
| Charles F. Dolan Children Trust FBO James L. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 960,498 | 3.3% |
| Kathleen M. Dolan 2012 Descendants Trust | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 56,947 | 0.2% |
| Charles F. Dolan Children Trust FBO Thomas C. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 488,579 | 1.7% |
| Thomas C. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 1,234,090 | 4.1% |
| Tara Dolan 1989 Trust | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 7,659 | 0.1% |
| Ryan Dolan 1989 Trust | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 7,659 | 0.1% |
| Paul J. Dolan, as a Trustee of certain trusts described herein | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 1,552,631 | 5.2% |
| Patrick F. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 58,022 | 0.2% |
| Charles F. Dolan 2009 Family Trust FBO Deborah A. Dolan-Sweeney | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 578,498 | 2% |
| Charles F. Dolan 2009 Family Trust FBO James L. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 1,053,283 | 3.5% |
| Corby Dolan Leinauer, as Trustee of certain trusts described herein | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 3,682,059 | 11.4% |
| Deborah A. Dolan-Sweeney | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 1,224,555 | 4.1% |
| Mary S. Dolan, as Trustee of certain trusts described herein | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 4,280,651 | 13% |
| Charles F. Dolan Children Trust FBO Kathleen M. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 488,579 | 1.7% |
| Charles F. Dolan Children Trust FBO Deborah Dolan-Sweeney | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 535,276 | 1.8% |
| Marianne E. Dolan Weber 2012 Descendants Trust | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 56,948 | 0.2% |
| Charles F. Dolan 2009 Family Trust FBO Thomas C. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 716,156 | 2.4% |
| Charles F. Dolan 2009 Family Trust FBO Patrick F. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 56,947 | 0.2% |
| Charles F. Dolan 2009 Family Trust FBO Marianne E. Dolan Weber | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 653,144 | 2.2% |
| Charles F. Dolan 2009 Family Trust FBO Kathleen M. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 621,308 | 2.1% |
| James L. Dolan | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 3,479,807 | 11.2% |
| Charles F. Dolan Children Trust FBO Marianne Dolan Weber | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 474,339 | 1.6% |
| Kathleen M. Dolan, individually and as Trustee of certain trusts described herein | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 3,693,479 | 11.5% |
| Marianne Dolan Weber | SCHEDULE 13D/A | 2026-03-09 | 2026-02-25 | 1,245,357 | 4.2% |
| BANK OF NOVA SCOTIA | SCHEDULE 13G/A | 2026-01-27 | 2025-12-31 | 894,262 | 3.06% |
| Point72 Asset Management, L.P. | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 223,464 | 0.8% |
| Steven A. Cohen | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 223,464 | 0.8% |
| Point72 Capital Advisors, Inc. | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 223,464 | 0.8% |
| Charles F. Dolan 2009 Revocable Trust | SCHEDULE 13D/A | 2025-09-10 | 2025-09-08 | 0 | 0% |
| Citadel GP LLC | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 730,928 | 2.5% |
| Citadel Securities Group LP | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 384,348 | 1.3% |
| Citadel Securities GP LLC | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 384,348 | 1.3% |
| Citadel Securities LLC | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 247,044 | 0.9% |
| Kenneth Griffin | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 1,115,276 | 3.9% |
| Citadel Advisors LLC | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 730,928 | 2.5% |
| Citadel Advisors Holdings LP | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 730,928 | 2.5% |
| Barclays PLC | SCHEDULE 13G | 2025-05-13 | 2025-03-31 | 1,676,042 | 5.79% |
| Dimensional Fund Advisors LP | SCHEDULE 13G/A | 2025-04-15 | 2025-03-31 | 1,435,410 | 5% |
| Corby Dolan Leinauer, as a Trustee of each of the 2009 Family Trusts | SCHEDULE 13D/A | 2025-02-04 | 2025-01-31 | 3,557,914 | 11% |
| Mary S. Dolan, as a Trustee of the Charles F. Dolan Children Trust FBO Deborah Dolan-Sweeney and each of the 2009 Family Trusts | SCHEDULE 13D/A | 2025-02-04 | 2025-01-31 | 4,052,862 | 12.3% |
| Charles F. Dolan | SCHEDULE 13D/A | 2024-12-31 | 2024-12-28 | 0 | 0% |
| Paul J. Dolan, as a Trustee of the Charles F. Dolan Children Trusts FBO Kathleen M. Dolan and James L. Dolan | SCHEDULE 13D/A | 2024-12-31 | 2024-12-28 | 1,495,684 | 4.9% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.