- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 19 Feb 2026
- latest of these filings; the earliest 22 Jan 2026
- Managers listing it
- 30
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 4 listed it in both
- Shares listed
- 23,220,190
- combined, among listed positions
- Reported value
- $690m
- combined, at the quarter end
Among the 92 comparable managers: 21 buyers (opened or added shares) and 8 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +5,835,648.
Managers listing BTU in Q4 2025
30 of 30 holders
Largest increases and reductions, by shares
Increases
- MFS Investment Managementnew position · 3,050,606 shares now+3,050,606
- Jane Street Group LLCexisting position · 2,319,447 shares now+1,216,364
- Millennium Management LLCnew position · 896,745 shares now+896,745
- Tudor Investment Corpnew position · 715,850 shares now+715,850
- Balyasny Asset Management LLCexisting position · 607,336 shares now+598,635
Reductions
- Maverick Capital Ltdexisting position · 4,067,173 shares now-495,140
- Renaissance Technologies LLCexisting position · 6,134,927 shares now-314,816
- Hudson Bay Capital Management LPexisting position · 2,122,662 shares now-299,604
- AQR Capital Management LLCexisting position · 396,762 shares now-163,876
- Winton Group Ltdexisting position · 18,450 shares now-70,778
New positions and exits
New (10)
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 |
|---|---|---|---|---|
| Q2 2017 | 6 | $1.2bn | n.a. | n.a. |
| Q3 2017 | 12 | $1.2bn | n.a. | n.a. |
| Q4 2017 | 13 | $1.5bn | n.a. | n.a. |
| Q1 2018 | 14 | $1.8bn | n.a. | n.a. |
| Q2 2018 | 11 | $2.1bn | n.a. | n.a. |
| Q3 2018 | 9 | $1.3bn | n.a. | n.a. |
| Q4 2018 | 9 | $1.3bn | n.a. | n.a. |
| Q1 2019 | 10 | $1.1bn | n.a. | n.a. |
| Q2 2019 | 11 | $937m | n.a. | n.a. |
| Q3 2019 | 8 | $591m | n.a. | n.a. |
| Q4 2019 | 4 | $273m | n.a. | n.a. |
| Q1 2020 | 3 | $87m | n.a. | n.a. |
| Q2 2020 | 2 | $85m | n.a. | n.a. |
| Q3 2020 | 2 | $68m | n.a. | n.a. |
| Q4 2020 | 1 | $70m | n.a. | n.a. |
| Q1 2021 | 1 | $88m | n.a. | n.a. |
| Q2 2021 | 2 | $232m | n.a. | n.a. |
| Q3 2021 | 7 | $539m | n.a. | n.a. |
| Q4 2021 | 5 | $351m | n.a. | n.a. |
| Q1 2022 | 7 | $836m | n.a. | n.a. |
| Q2 2022 | 5 | $638m | n.a. | n.a. |
| Q3 2022 | 6 | $745m | n.a. | n.a. |
| Q4 2022 | 6 | $787m | n.a. | n.a. |
| Q1 2023 | 7 | $703m | n.a. | n.a. |
| Q2 2023 | 5 | $561m | n.a. | n.a. |
| Q3 2023 | 5 | $666m | n.a. | n.a. |
| Q4 2023 | 9 | $539m | 7 | 2 |
| Q1 2024 | 7 | $218m | 4 | 3 |
| Q2 2024 | 8 | $197m | 7 | 3 |
| Q3 2024 | 4 | $167m | 3 | 1 |
| Q4 2024 | 7 | $151m | 5 | 2 |
| Q1 2025 | 7 | $111m | 7 | 1 |
| Q2 2025 | 8 | $120m | 5 | 2 |
| Q3 2025 | 4 | $359m | 3 | 1 |
| Q4 2025 | 7 | $485m | 21 | 8 |
| Q1 2026 | 5 | $369m | 14 | 17 |
| Q2 2026 | 4 | $281m | 11 | 17 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
BTU and XOM →BTU and CVX →BTU and CNQ →Choose a stock to compare with BTU →
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 BTU, latest filings →Back to the 13F Explorer →