# SPHERE ENTERTAINMENT CO CL A

SPHERE ENTERTAINMENT CO CL A is a security (CUSIP 55826T102) tracked across SEC portfolio filings. 399 institutional managers reported $4.3B on Form 13F as of 2026-06-30; 38 registered fund positions totaling $330.1M via N-PORT as of 2026-05-31.

## Summary

- Issuer: SPHERE ENTERTAINMENT CO
- Class: CL A
- CUSIP: 55826T102
- Asset category: EC
- 13F holders: 399
- 13F value: $4.3B
- 13F period: 2026-06-30
- N-PORT fund positions: 38
- N-PORT value: $330.1M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 399 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $458.8M | 3,907,941 |
| [Jericho Capital Asset Management L.P.](https://search.stillhousedata.com/firm/156701) | New York, NY | $305.9M | 2,605,615 |
| ARIEL INVESTMENTS, LLC | CHICAGO, IL | $289.1M | 2,462,309 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $252.3M | 2,653,282 |
| MORGAN STANLEY | NEW YORK, NY | $240.3M | 2,046,988 |
| STATE STREET CORP | BOSTON, MA | $120.2M | 1,023,654 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $105.4M | 897,586 |
| [GAMCO INVESTORS, INC. ET AL](https://search.stillhousedata.com/firm/104950) | GREENWICH, CT | $93.3M | 794,755 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $85.8M | 730,313 |
| [STEADFAST CAPITAL MANAGEMENT LP](https://search.stillhousedata.com/firm/157124) | NEW YORK, NY | $83.5M | 711,661 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $83.2M | 705,486 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $83.0M | 387,100 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $71.6M | 42,518 |
| Assenagon Asset Management S.A. | SENNINGERBERG, N4 | $70.4M | 406,875 |
| [GILDER GAGNON HOWE & CO LLC](https://search.stillhousedata.com/firm/2002) | New York, NY | $65.9M | 561,457 |

## Top fund holders (N-PORT)

_Showing 15 of 38 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Ariel Fund](https://search.stillhousedata.com/fund/S000005024) | Ariel Investment Trust | $96.5M | 376.88% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $34.8M | 4.27% |
| [Neuberger Long Short Fund](https://search.stillhousedata.com/fund/S000035446) | NEUBERGER BERMAN ALTERNATIVE FUNDS | $33.2M | 40.18% |
| Gabelli Equity Trust Inc | Gabelli Equity Trust Inc | $32.3M | 186.30% |
| [The Gabelli Asset Fund](https://search.stillhousedata.com/fund/S000001087) | Gabelli Asset Fund | $32.3M | 205.71% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $28.3M | 30.72% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $19.3M | 11.02% |
| [The Gabelli Value 25 Fund Inc.](https://search.stillhousedata.com/fund/S000001076) | Gabelli Value 25 Fund Inc | $17.6M | 734.14% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $15.3M | 20.46% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $12.4M | 55.82% |
| Gabelli Dividend & Income Trust | Gabelli Dividend & Income Trust | $10.5M | 39.70% |
| [ALGER SPECTRA FUND](https://search.stillhousedata.com/fund/S000009190) | ALGER FUNDS II | $9.3M | 21.56% |
| Gabelli Multimedia Trust Inc. | Gabelli Multimedia Trust Inc. | $5.9M | 384.76% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $5.2M | 10.74% |
| [UBS U.S. EQUITY ALPHA RELATIONSHIP FUND](https://search.stillhousedata.com/fund/S000003186) | UBS RELATIONSHIP FUNDS | $3.4M | 110.15% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55826t102.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.