- 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
- 23
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 3 listed it in both
- Shares listed
- 7,821,075
- combined, among listed positions
- Reported value
- $986m
- 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: 17 buyers (opened or added shares) and 8 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,170,204.
Managers listing ACMR in Q2 2026
23 of 23 holders
Largest increases and reductions, by shares
Increases
- Capital World Investorsnew position · 2,398,036 shares now+2,398,036
- Citadel Advisors LLCexisting position · 636,836 shares now+433,458
- Invesco Ltdexisting position · 1,170,080 shares now+382,979
- T. Rowe Price Associates Incexisting position · 591,573 shares now+374,618
- Susquehanna International Group LLPexisting position · 253,671 shares now+193,924
Reductions
- Southeastern Asset Management Incexisting position · 139,478 shares now-643,422
- Janus Henderson Group Ltdexisting position · 553,768 shares now-531,866
- Acadian Asset Management LLCexisting position · 21,206 shares now-24,294
- AQR Capital Management LLCexisting position · 314,172 shares now-9,240
- Dodge & Coxexisting position · 116,392 shares now-3,500
New positions and exits
New (6)
Exited (2)
- Balyasny Asset Management LLCwas $1.9m
- Brevan Howard Capital Management LPwas $767k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q1 2020 | 1 | $48k | n.a. | n.a. |
| Q3 2020 | 2 | $23m | n.a. | n.a. |
| Q4 2020 | 3 | $36m | n.a. | n.a. |
| Q1 2021 | 2 | $3.4m | n.a. | n.a. |
| Q2 2021 | 1 | $22k | n.a. | n.a. |
| Q3 2021 | 1 | $24k | n.a. | n.a. |
| Q4 2021 | 1 | $19k | n.a. | n.a. |
| Q1 2022 | 1 | $14k | n.a. | n.a. |
| Q2 2022 | 1 | $11k | n.a. | n.a. |
| Q3 2022 | 1 | $8k | n.a. | n.a. |
| Q4 2022 | 3 | $1.6m | n.a. | n.a. |
| Q1 2023 | 2 | $1.2m | n.a. | n.a. |
| Q2 2023 | 1 | $1.0m | n.a. | n.a. |
| Q3 2023 | 2 | $14m | n.a. | n.a. |
| Q4 2023 | 2 | $15m | 0 | 2 |
| Q1 2024 | 1 | $25m | 1 | 0 |
| Q2 2024 | 1 | $20m | 1 | 0 |
| Q3 2024 | 2 | $16m | 1 | 1 |
| Q4 2024 | 3 | $8.4m | 3 | 0 |
| Q1 2025 | 4 | $27m | 3 | 1 |
| Q2 2025 | 2 | $33m | 2 | 1 |
| Q3 2025 | 4 | $66m | 3 | 1 |
| Q4 2025 | 5 | $125m | 12 | 17 |
| Q1 2026 | 3 | $78m | 12 | 13 |
| Q2 2026 | 6 | $411m | 17 | 8 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ACMR and GE →ACMR and LRCX →ACMR and GEV →Choose a stock to compare with ACMR →
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 ACMR, latest filings →Back to the 13F Explorer →