- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 7 Aug 2026
- Managers listing it
- 24
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 2 listed it in both
- Shares listed
- 11,641,297
- combined, among listed positions
- Reported value
- $434m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 10 buyers (opened or added shares) and 18 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +371,691.
Managers listing ATEN in Q2 2026
24 of 24 holders
Largest increases and reductions, by shares
Increases
- Fidelity (FMR LLC)existing position · 1,433,878 shares now+1,405,772
- Invesco Ltdexisting position · 1,243,053 shares now+880,381
- Acadian Asset Management LLCnew position · 455,769 shares now+455,769
- D. E. Shaw & Co.existing position · 547,577 shares now+284,190
- Brevan Howard Capital Management LPexisting position · 102,085 shares now+77,185
Reductions
- Jane Street Group LLCexisting position · 93,880 shares now-502,068
- Citadel Advisors LLCexisting position · 93,240 shares now-420,780
- Renaissance Technologies LLCexisting position · 1,520,287 shares now-264,700
- Millennium Management LLCexisting position · 175,579 shares now-239,341
- Two Sigma Investments LPexisting position · 1,124,963 shares now-195,026
New positions and exits
New (1)
Exited (4)
- Man Group PLCwas $7.0m
- Quantbot Technologies LPwas $2.9m
- Squarepoint Ops LLCwas $1.1m
- Schonfeld Strategic Advisors LLCwas $417k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2016 | 1 | $6.3m | n.a. | n.a. |
| Q1 2017 | 1 | $8.7m | n.a. | n.a. |
| Q2 2017 | 1 | $3.2m | n.a. | n.a. |
| Q4 2020 | 1 | $38m | n.a. | n.a. |
| Q2 2021 | 2 | $35m | n.a. | n.a. |
| Q3 2021 | 3 | $51m | n.a. | n.a. |
| Q4 2021 | 4 | $69m | n.a. | n.a. |
| Q1 2022 | 4 | $45m | n.a. | n.a. |
| Q2 2022 | 2 | $45m | n.a. | n.a. |
| Q3 2022 | 1 | $36m | n.a. | n.a. |
| Q4 2022 | 1 | $41m | n.a. | n.a. |
| Q1 2023 | 1 | $39m | n.a. | n.a. |
| Q2 2023 | 3 | $37m | n.a. | n.a. |
| Q3 2023 | 2 | $37m | n.a. | n.a. |
| Q4 2023 | 2 | $31m | 1 | 1 |
| Q1 2024 | 2 | $30m | 1 | 1 |
| Q2 2024 | 2 | $33m | 2 | 0 |
| Q3 2024 | 1 | $1.1m | 1 | 0 |
| Q4 2024 | 2 | $37m | 0 | 2 |
| Q1 2025 | 2 | $40m | 1 | 1 |
| Q2 2025 | 3 | $50m | 3 | 0 |
| Q3 2025 | 2 | $45m | 1 | 1 |
| Q4 2025 | 3 | $40m | 10 | 19 |
| Q1 2026 | 3 | $46m | 21 | 7 |
| Q2 2026 | 4 | $82m | 10 | 18 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ATEN and AAPL →ATEN and SNDK →ATEN and CSCO →Choose a stock to compare with ATEN →
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 ATEN, latest filings →Back to the 13F Explorer →