- Quarter end
- 30 Sep 2024
- the date the book describes
- Filed
- 14 Nov 2024
- latest of these filings; the earliest 12 Nov 2024
- Managers listing it
- 9
- at least, of 95 tracked, among listed positions
- Comparable managers
- 94
- filed both Q2 2024 and Q3 2024; 0 listed it in both
- Shares listed
- 111,346,784
- combined, among listed positions
- Reported value
- $2.6bn
- combined, at the quarter end
Among the 94 comparable managers: 9 buyers (opened or added shares) and 0 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +111,346,784.
Managers listing SIRI in Q3 2024
9 of 9 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Berkshire Hathaway Inc | 105,155,029 | $2.5bn | 0.93% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| Marshall Wace LLP | 1,879,156 | $44m | 0.05% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| Arrowstreet Capital LP | 1,516,339 | $36m | under 0.1% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| Walleye Capital LLC | 1,332,568 | $32m | 0.07% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| ExodusPoint Capital Management LP | 619,019 | $15m | 0.09% | New | new | 12 Nov 2024 (the filing on sec.gov) |
| GAMCO Investors Inc | 524,193 | $12m | 0.13% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| Hudson Bay Capital Management LP | 152,997 | $3.6m | under 0.1% | New | new | 13 Nov 2024 (the filing on sec.gov) |
| Holocene Advisors LP | 119,557 | $2.8m | under 0.1% | New | new | 14 Nov 2024 (the filing on sec.gov) |
| Maverick Capital Ltd | 47,926 | $1.1m | under 0.1% | New | new | 14 Nov 2024 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Berkshire Hathaway Incnew position · 105,155,029 shares now+105,155,029
- Marshall Wace LLPnew position · 1,879,156 shares now+1,879,156
- Arrowstreet Capital LPnew position · 1,516,339 shares now+1,516,339
- Walleye Capital LLCnew position · 1,332,568 shares now+1,332,568
- ExodusPoint Capital Management LPnew position · 619,019 shares now+619,019
Reductions
No reduction among listed positions.
New positions and exits
New (9)
Exited (0)
No exit shown by a manager’s own filing.
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2024 | 9 | $2.6bn | 9 | 0 |
| Q4 2024 | 3 | $2.8bn | 2 | 3 |
| Q1 2025 | 6 | $2.9bn | 5 | 1 |
| Q2 2025 | 5 | $3.1bn | 2 | 2 |
| Q3 2025 | 10 | $3.1bn | 7 | 3 |
| Q4 2025 | 5 | $2.6bn | 8 | 23 |
| Q1 2026 | 5 | $2.9bn | 16 | 13 |
| Q2 2026 | 8 | $3.8bn | 19 | 13 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
SIRI and NFLX →SIRI and TMUS →SIRI and CMCSA →Choose a stock to compare with SIRI →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own SIRI, latest filings →Back to the 13F Explorer →