- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 12 Feb 2026
- Managers listing it
- 8
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 3 listed it in both
- Shares listed
- 16,104,613
- combined, among listed positions
- Reported value
- $338m
- combined, at the quarter end
Among the 92 comparable managers: 2 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -7,437,376.
Managers listing BKLN in Q4 2025
Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.
8 of 8 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Invesco Ltd | 8,730,629 | $183m | under 0.1% | Added | +131,683 | 19 Feb 2026 (the filing on sec.gov) |
| Neuberger Berman Group LLC | 3,352,325 | $70m | 0.05% | Held | 0 | 27 Oct 2026 (the filing on sec.gov) |
| Man Group PLC | 1,981,983 | $42m | 0.07% | Trimmed | -71,604 | 17 Feb 2026 (the filing on sec.gov) |
| Wellington Management Group LLP | 507,843 | $11m | under 0.1% | Trimmed | -250,000 | 17 Feb 2026 (the filing on sec.gov) |
| Fidelity (FMR LLC) | 454,704 | $9.5m | under 0.1% | Trimmed | -440,791 | 17 Feb 2026 (the filing on sec.gov) |
| Millennium Management LLC | 451,650 | $9.5m | under 0.1% | New | new | 17 Feb 2026 (the filing on sec.gov) |
| Citadel Advisors LLC | 357,021 | $7.5m | under 0.1% | Trimmed | -291,823 | 17 Feb 2026 (the filing on sec.gov) |
| Renaissance Technologies LLC | 268,458 | $5.6m | under 0.1% | Trimmed | -3,154,742 | 12 Feb 2026 (the filing on sec.gov) |
Largest increases and reductions, by shares
Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.
Increases
- Millennium Management LLCnew position · 451,650 shares now+451,650
- Invesco Ltdexisting position · 8,730,629 shares now+131,683
Reductions
- Renaissance Technologies LLCexisting position · 268,458 shares now-3,154,742
- Fidelity (FMR LLC)existing position · 454,704 shares now-440,791
- Citadel Advisors LLCexisting position · 357,021 shares now-291,823
- Wellington Management Group LLPexisting position · 507,843 shares now-250,000
- Man Group PLCexisting position · 1,981,983 shares now-71,604
New positions and exits
At least these many: a manager is shown exiting only where its own filing shows the position gone.
New (1)
Exited (2)
- Verition Fund Management LLCwas $80m
- Squarepoint Ops LLCwas $246k
Ownership over time
Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 3 in Q2 2026
Tracked managers listing it, at least.
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2018 | 1 | $25m | n.a. | n.a. |
| Q3 2018 | 1 | $45m | n.a. | n.a. |
| Q4 2018 | 1 | $29m | n.a. | n.a. |
| Q1 2019 | 3 | $129m | n.a. | n.a. |
| Q2 2019 | 3 | $222m | n.a. | n.a. |
| Q3 2019 | 2 | $148m | n.a. | n.a. |
| Q4 2019 | 2 | $142m | n.a. | n.a. |
| Q1 2020 | 3 | $100m | n.a. | n.a. |
| Q2 2020 | 1 | $63m | n.a. | n.a. |
| Q3 2020 | 2 | $70m | n.a. | n.a. |
| Q4 2020 | 3 | $183m | n.a. | n.a. |
| Q1 2021 | 5 | $687m | n.a. | n.a. |
| Q2 2021 | 4 | $441m | n.a. | n.a. |
| Q3 2021 | 6 | $715m | n.a. | n.a. |
| Q4 2021 | 4 | $561m | n.a. | n.a. |
| Q1 2022 | 1 | $263m | n.a. | n.a. |
| Q4 2022 | 1 | $487k | n.a. | n.a. |
| Q1 2023 | 1 | $64m | n.a. | n.a. |
| Q2 2023 | 4 | $157m | n.a. | n.a. |
| Q3 2023 | 3 | $57m | n.a. | n.a. |
| Q4 2023 | 7 | $273m | 6 | 2 |
| Q1 2024 | 7 | $233m | 6 | 2 |
| Q2 2024 | 8 | $409m | 5 | 5 |
| Q3 2024 | 6 | $236m | 3 | 4 |
| Q4 2024 | 4 | $212m | 3 | 2 |
| Q1 2025 | 6 | $264m | 4 | 1 |
| Q2 2025 | 3 | $170m | 3 | 3 |
| Q3 2025 | 4 | $264m | 3 | 1 |
| Q4 2025 | 2 | $112m | 2 | 7 |
| Q1 2026 | 3 | $367m | 5 | 7 |
| Q2 2026 | 3 | $118m | 6 | 6 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
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 BKLN, latest filings →Back to the 13F Explorer →