Sphere Entertainment Co.
MX ˙ BMV
SecurityMX:SPHR / Sphere Entertainment Co.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership71,707 shares
Latest Disclosed Value $ 6,817,902
Alliancebernstein L.p. reports 163.03% increase in ownership of SPHR / Sphere Entertainment Co.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 71,707 shares of Sphere Entertainment Co. (MX:SPHR) valued at $6,817,902 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 27,262 shares of Sphere Entertainment Co.. This represents a change in shares of 163.03% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 71,707 44,445 163.03 6,818 163.00 0.0022
2026-02-17 2025-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 27,262 -17,435 -39.01 2,592 -6.63 0.0008
2025-11-14 2025-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 44,697 -6,933 -13.43 2,777 28.64 0.0009
2025-08-14 2025-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 51,630 23,868 85.97 2,158 137.67 0.0007
2025-05-15 2025-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 27,762 -258,123 -90.29 908 -92.12 0.0003
2025-02-12 2024-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 285,885 258,123 929.77 11,527 840.13 0.0039
2024-11-14 2024-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 27,762 0 0.00 1,227 26.00 0.0004
2024-08-14 2024-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 27,762 0 0.00 973 -28.56 0.0003
2024-05-14 2024-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 27,762 -259,230 -90.33 1,363 -86.03 0.0005
2024-02-14 2023-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 286,992 259,230 933.76 9,746 845.30 0.0038
2023-11-14 2023-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 27,762 -308,133 -91.73 1,032 -88.79 0.0004
2023-08-15 2023-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 335,895 307,733 1,092.72 9,200 453.22 0.0038
2023-05-15 2023-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 28,162 -898 -3.09 1,664 27.34 0.0007
2023-02-15 2022-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 29,060 600 2.11 1,307 4.06 0.0006
2022-11-15 2022-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 28,460 -1,900 -6.26 1,255 -21.46 0.0006
2022-08-15 2022-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 30,360 -20,000 -39.71 1,598 -61.91 0.0007
2022-05-13 2022-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 50,360 22,242 79.10 4,195 112.08 0.0016
2022-02-14 2021-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 28,118 158 0.57 1,978 -2.66 0.0007
2021-11-10 2021-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 27,960 4,860 21.04 2,032 4.74 0.0008
2021-07-30 2021-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 23,100 15,091 188.43 1,940 196.18 0.0008
2021-05-06 2021-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 8,009 0 0.00 655 -22.12 0.0003
2021-02-08 2020-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 8,009 1,301 19.39 841 83.22 0.0004
2020-11-12 2020-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 6,708 -2,440 -26.67 459 -33.09 0.0002
2020-08-13 2020-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 9,148 9,148 686 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.