- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 3 Aug 2026
- Managers listing it
- 24
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 9 listed it in both
- Shares listed
- 22,856,801
- combined, among listed positions
- Reported value
- $1.2bn
- 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 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -99,568.
Managers listing ATMU in Q2 2026
24 of 24 holders
Largest increases and reductions, by shares
Increases
- Neuberger Berman Group LLCexisting position · 2,420,647 shares now+1,246,437
- Invesco Ltdexisting position · 4,457,550 shares now+1,113,650
- Marshall Wace LLPexisting position · 806,251 shares now+483,642
- Fidelity (FMR LLC)existing position · 5,316,383 shares now+378,606
- Woodline Partners LPexisting position · 607,471 shares now+251,535
Reductions
- D. E. Shaw & Co.existing position · 482,029 shares now-1,138,723
- Arrowstreet Capital LPexisting position · 383,637 shares now-615,911
- Jane Street Group LLCexisting position · 10,346 shares now-416,276
- MFS Investment Managementexisting position · 403,485 shares now-415,365
- Susquehanna International Group LLPexisting position · 33,536 shares now-305,547
New positions and exits
New (2)
Exited (7)
- Schonfeld Strategic Advisors LLCwas $16m
- Voloridge Investment Management LLCwas $9.5m
- Millennium Management LLCwas $6.7m
- ExodusPoint Capital Management LPwas $4.6m
- PDT Partners LLCwas $2.6m
- Renaissance Technologies LLCwas $1.1m
- Walleye Capital LLCwas $240k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2023 | 2 | $1.2m | n.a. | n.a. |
| Q4 2023 | 1 | $585k | 1 | 0 |
| Q1 2024 | 10 | $287m | 10 | 0 |
| Q2 2024 | 8 | $154m | 5 | 4 |
| Q3 2024 | 9 | $266m | 3 | 7 |
| Q4 2024 | 9 | $343m | 5 | 3 |
| Q1 2025 | 6 | $152m | 4 | 2 |
| Q2 2025 | 8 | $191m | 5 | 3 |
| Q3 2025 | 6 | $365m | 2 | 4 |
| Q4 2025 | 7 | $410m | 19 | 14 |
| Q1 2026 | 12 | $660m | 19 | 11 |
| Q2 2026 | 6 | $504m | 10 | 21 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ATMU and AMZN →ATMU and TSLA →ATMU and HD →Choose a stock to compare with ATMU →
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 ATMU, latest filings →Back to the 13F Explorer →