Sphere Entertainment Co.
MX ˙ BMV
SecurityMX:SPHR / Sphere Entertainment Co.
InstitutionBoyar Asset Management Inc.
Latest Disclosed Ownership37,113 shares
Latest Disclosed Value $ 4,357,067
Boyar Asset Management Inc. reports 8.85% increase in ownership of SPHR / Sphere Entertainment Co.

On May 8, 2026 - Boyar Asset Management Inc. filed a 13F-HR form disclosing ownership of 37,113 shares of Sphere Entertainment Co. (MX:SPHR) valued at $4,357,067 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 49,699 shares of Sphere Entertainment Co.. This represents a change in shares of 8.85% 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)
2026-05-08 2026-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 37,113 3,016 8.85 4,357 34.43 2.4795
2026-02-13 2025-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 34,097 -6,351 -15.70 3,242 29.02 2.0557
2025-11-18 2025-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 40,448 -2,545 -5.92 2,513 39.79 1.5898
2025-07-21 2025-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 42,993 962 2.29 1,797 30.69 1.1760
2025-04-23 2025-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 42,031 -2,426 -5.46 1,375 -23.27 0.9975
2025-02-14 2024-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 44,457 542 1.23 1,793 -7.63 1.1825
2024-11-22 2024-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 43,915 -824 -1.84 1,940 23.72 1.2491
2024-08-05 2024-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 44,739 -350 -0.78 1,569 -29.11 1.0761
2024-05-06 2024-03-31 13F SPHERE ENTERTAINMENT CL A 55826T102 45,089 1,882 4.36 2,213 50.78 1.4434
2024-02-14 2023-12-31 13F SPHERE ENTERTAINMENT CL A 55826T102 43,207 -4,407 -9.26 1,467 -17.07 1.1012
2023-11-08 2023-09-30 13F SPHERE ENTERTAINMENT CL A 55826T102 47,614 284 0.60 1,769 36.50 1.3892
2023-07-27 2023-06-30 13F SPHERE ENTERTAINMENT CL A 55826T102 47,330 -205 -0.43 1,296 -53.83 0.9591
2023-04-27 2023-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 47,535 -343 -0.72 2,808 30.38 2.1658
2023-02-10 2022-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 47,878 -5,961 -11.07 2,153 -9.31 1.7556
2022-11-08 2022-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 53,839 4,318 8.72 2,374 -8.90 1.9552
2022-08-08 2022-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 49,521 -1,403 -2.76 2,606 -38.57 2.1511
2022-04-27 2022-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 50,924 1,235 2.49 4,242 21.37 2.7245
2022-02-10 2021-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 49,689 1,998 4.19 3,495 0.84 2.1057
2021-10-18 2021-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 47,691 22,737 91.12 3,466 65.44 2.2831
2021-08-04 2021-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 24,954 90 0.36 2,095 3.00 1.3496
2021-05-04 2021-03-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 24,864 -223 -0.89 2,034 -22.81 1.3755
2021-02-10 2020-12-31 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 25,087 219 0.88 2,635 54.73 1.9869
2020-11-09 2020-09-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 24,868 190 0.77 1,703 -8.00 1.4300
2020-07-31 2020-06-30 13F MADISON SQUARE GRDN ENTERTNM CL A 55826T102 24,678 24,678 1,851 1.7133
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.