- Quarter end
- 30 Sep 2025
- the date the book describes
- Filed
- 14 Nov 2025
- latest of these filings; the earliest 12 Nov 2025
- Managers listing it
- 10
- at least, of 95 tracked, among listed positions
- Comparable managers
- 95
- filed both Q2 2025 and Q3 2025; 4 listed it in both
- Shares listed
- 133,696,983
- combined, among listed positions
- Reported value
- $3.1bn
- combined, at the quarter end
Among the 95 comparable managers: 7 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.
Managers listing SIRI in Q3 2025
10 of 10 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Berkshire Hathaway Inc | 124,807,117 | $2.9bn | 1.09% | Added | +5,030,425 | 14 Nov 2025 (the filing on sec.gov) |
| D. E. Shaw & Co. | 3,716,202 | $86m | under 0.1% | Trimmed | -458,410 | 14 Nov 2025 (the filing on sec.gov) |
| Two Sigma Investments LP | 1,933,521 | $45m | 0.07% | Added | n.a. | 14 Nov 2025 (the filing on sec.gov) |
| Point72 Asset Management LP | 1,377,251 | $32m | 0.05% | Trimmed | -2,818,035 | 14 Nov 2025 (the filing on sec.gov) |
| Two Sigma Advisers LP | 717,304 | $17m | under 0.1% | New | new | 14 Nov 2025 (the filing on sec.gov) |
| GAMCO Investors Inc | 463,173 | $11m | 0.10% | Trimmed | -4,672 | 12 Nov 2025 (the filing on sec.gov) |
| Bridgewater Associates LP | 226,993 | $5.3m | under 0.1% | New | new | 13 Nov 2025 (the filing on sec.gov) |
| ExodusPoint Capital Management LP | 172,155 | $4.0m | under 0.1% | Added | n.a. | 14 Nov 2025 (the filing on sec.gov) |
| Maverick Capital Ltd | 150,253 | $3.5m | under 0.1% | New | new | 14 Nov 2025 (the filing on sec.gov) |
| Quantbot Technologies LP | 133,014 | $3.1m | 0.08% | Added | n.a. | 12 Nov 2025 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Berkshire Hathaway Incexisting position · 124,807,117 shares now+5,030,425
- Two Sigma Advisers LPnew position · 717,304 shares now+717,304
- Bridgewater Associates LPnew position · 226,993 shares now+226,993
- Maverick Capital Ltdnew position · 150,253 shares now+150,253
Reductions
- Point72 Asset Management LPexisting position · 1,377,251 shares now-2,818,035
- D. E. Shaw & Co.existing position · 3,716,202 shares now-458,410
- GAMCO Investors Incexisting position · 463,173 shares now-4,672
New positions and exits
New (3)
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 →