- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 17 Feb 2026
- latest of these filings; the earliest 11 Feb 2026
- Managers listing it
- 7
- 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
- 18,610,540
- combined, among listed positions
- Reported value
- $540m
- combined, at the quarter end
Among the 92 comparable managers: 6 buyers (opened or added shares) and 1 seller (trimmed or exited), at least, among listed positions. Their net change in shares was -4,163,224.
Managers listing ARKB in Q4 2025
7 of 7 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| ARK Investment Management LLC | 6,871,505 | $200m | 1.32% | Added | +548,789 | 11 Feb 2026 (the filing on sec.gov) |
| Schonfeld Strategic Advisors LLC | 4,768,707 | $138m | 0.61% | Added | +782,428 | 17 Feb 2026 (the filing on sec.gov) |
| Millennium Management LLC | 4,314,138 | $125m | 0.05% | Added | +354,014 | 17 Feb 2026 (the filing on sec.gov) |
| Jane Street Group LLC | 1,776,031 | $52m | under 0.1% | Trimmed | -6,479,262 | 12 Feb 2026 (the filing on sec.gov) |
| Susquehanna International Group LLP | 518,390 | $15m | under 0.1% | Added | +476,601 | 17 Feb 2026 (the filing on sec.gov) |
| Citadel Advisors LLC | 234,169 | $6.8m | under 0.1% | Added | +73,206 | 17 Feb 2026 (the filing on sec.gov) |
| Renaissance Technologies LLC | 127,600 | $3.7m | under 0.1% | Added | +81,000 | 12 Feb 2026 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Schonfeld Strategic Advisors LLCexisting position · 4,768,707 shares now+782,428
- ARK Investment Management LLCexisting position · 6,871,505 shares now+548,789
- Susquehanna International Group LLPexisting position · 518,390 shares now+476,601
- Millennium Management LLCexisting position · 4,314,138 shares now+354,014
- Renaissance Technologies LLCexisting position · 127,600 shares now+81,000
Reductions
- Jane Street Group LLCexisting position · 1,776,031 shares now-6,479,262
New positions and exits
New (0)
No new position among listed positions.
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 |
|---|---|---|---|---|
| Q1 2024 | 2 | $446m | 2 | 0 |
| Q2 2024 | 2 | $382m | 1 | 1 |
| Q3 2024 | 3 | $654m | 2 | 1 |
| Q4 2024 | 3 | $702m | 1 | 2 |
| Q1 2025 | 4 | $781m | 3 | 1 |
| Q2 2025 | 4 | $917m | 4 | 0 |
| Q3 2025 | 4 | $856m | 1 | 3 |
| Q4 2025 | 3 | $463m | 6 | 1 |
| Q1 2026 | 2 | $276m | 2 | 5 |
| Q2 2026 | 2 | $202m | 3 | 4 |
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 ARKB, latest filings →Back to the 13F Explorer →