Sphere Entertainment Co.
MX ˙ BMV
SecurityMX:SPHR / Sphere Entertainment Co.
InstitutionState Street Corp
Latest Disclosed Ownership1,023,654 shares
Latest Disclosed Value $ 120,176,980
State Street Corp reports 61.97% increase in ownership of SPHR / Sphere Entertainment Co.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 1,023,654 shares of Sphere Entertainment Co. (MX:SPHR) valued at $120,176,980 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 632,018 shares of Sphere Entertainment Co.. This represents a change in shares of 61.97% 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 1,023,654 391,636 61.97 120,177 99.99 0.0041
2026-02-13 2025-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 632,018 -5,329 -0.84 60,092 51.78 0.0020
2025-11-14 2025-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 637,347 4,095 0.65 39,592 49.57 0.0014
2025-08-14 2025-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 633,252 10,593 1.70 26,470 29.92 0.0010
2025-05-15 2025-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 622,659 -5,329 -0.85 20,373 -19.54 0.0008
2025-02-14 2024-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 627,988 -4,079 -0.65 25,320 -9.33 0.0010
2024-11-14 2024-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 632,067 9,749 1.57 27,925 27.99 0.0011
2024-08-14 2024-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 622,318 26,993 4.53 21,818 -25.33 0.0010
2024-05-15 2024-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 595,325 1,988 0.34 29,219 45.01 0.0013
2024-02-14 2023-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 593,337 31,988 5.70 20,150 -3.40 0.0010
2023-11-14 2023-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 561,349 1,805 0.32 20,860 36.11 0.0012
2023-08-14 2023-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 559,544 -2,343 -0.42 15,326 -53.83 0.0008
2023-05-15 2023-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 561,887 28,273 5.30 33,191 38.31 0.0019
2023-05-15 2022-12-31 13F/A-99 MADISON SQUARE GRDN ENTERTNM CL A 55826T102 533,614 -4,557 -0.85 23,997 1.13 0.0014
2023-05-15 2022-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 533,614 -4,557 23,997 0.0014
2022-11-15 2022-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 538,171 3,718 0.70 23,728 -15.63 0.0015
2022-08-15 2022-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 534,453 6,883 1.30 28,123 -36.01 0.0017
2022-05-16 2022-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 527,570 21,045 4.15 43,952 23.36 0.0022
2022-02-14 2021-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 506,525 15,990 3.26 35,629 -0.05 0.0017
2021-11-15 2021-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 490,535 125,705 34.46 35,647 16.36 0.0019
2021-08-16 2021-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 364,830 139,260 61.74 30,635 66.03 0.0016
2021-07-09 2021-03-31 13F/A-1 MADISON SQUARE GRDN ENTERTNM CL A 55826T102 225,570 -7,369 -3.16 18,452 -24.59 0.0011
2021-05-17 2021-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 225,570 -7,369 18,452 0.0011
2021-02-16 2020-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 232,939 6,918 3.06 24,468 58.06 0.0015
2020-11-10 2020-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 226,021 -14,928 -6.20 15,480 -14.34 0.0011
2020-08-14 2020-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 240,949 240,949 18,071 0.0013
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.