Sirius XM Holdings Inc.
US ˙ NasdaqGS ˙ US82968B1035

SecuritySIRI / Sirius XM Holdings Inc.
InstitutionFirst Manhattan Co
Latest Disclosed Ownership228,472 shares
Latest Disclosed Value $ 5,273,134
First Manhattan Co reports 0.37% decrease in ownership of SIRI / Sirius XM Holdings Inc.

On May 15, 2026 - First Manhattan Co filed a 13F-HR form disclosing ownership of 228,472 shares of Sirius XM Holdings Inc. (US:SIRI) valued at $5,273,134 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 229,320 shares of Sirius XM Holdings Inc.. This represents a change in shares of -0.37% during the quarter. The current value of the position is $6,415,494 USD.

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 SIRIUSXM HOLDINGS COMMON STOCK 829933100 228,472 -848 -0.37 5,273 15.01 0.0146
2026-02-17 2025-12-31 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 229,320 -5,286 -2.25 4,585 -16.03 0.0120
2025-11-14 2025-09-30 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 234,606 -1,286 -0.55 5,460 0.78 0.0144
2025-08-14 2025-06-30 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 235,892 -75,334 -24.21 5,418 -22.78 0.0153
2025-05-15 2025-03-31 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 311,226 -46,059 -12.89 7,017 -13.87 0.0205
2025-02-14 2024-12-31 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 357,285 0 0.00 8,146 -3.59 0.0239
2024-11-14 2024-09-30 13F SIRIUSXM HOLDINGS COMMON STOCK 829933100 357,285 357,285 8,450 0.0251
2014-02-04 2013-12-31 13F SIRIUS XM RADIO COMMON 82967N108 0 -39,325 -100.00 0 -100.00
2013-10-29 2013-09-30 13F SIRIUS XM RADIO COMMON 82967N108 39,325 0 0.00 152 3.40 0.0011
2013-08-13 2013-06-30 13F SIRIUS XM RADIO COMMON 82967N108 39,325 39,325 147 0.0010
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.