Triata Capital Ltd
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
AC
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Triata Capital Ltd
· Exited
Change
−1.9M
Δ Own
−100.0%
Date
Q1 2026
|
Triata Capital Ltd | Exited· Q1 2026 | – | −1.9M | −100.0% | Q1 2026 | |||||
|
Wcm Investment Management, LLC
· Added
Change
+1.8M
Date
Q1 2026
|
Wcm Investment Management, LLC | Added· Q1 2026 | – | +1.8M | – | Q1 2026 | |||||
|
Lsv Asset Management
· Reduced
Change
−1.8M
Date
Q1 2026
|
Lsv Asset Management | Reduced· Q1 2026 | – | −1.8M | – | Q1 2026 | |||||
|
Value Aligned Research Advisors, LLC
· New
Change
+956K
Date
Q1 2026
|
Value Aligned Research Advisors, LLC | New· Q1 2026 | – | +956K | – | Q1 2026 | |||||
|
Southeastern Asset Management Inc
· Reduced
Change
−897K
Δ Own
−53.4%
Date
Q1 2026
|
Southeastern Asset Management Inc | Reduced· Q1 2026 | – | −897K | −53.4% | Q1 2026 | |||||
|
Polunin Capital Partners Ltd
· New
Change
+763K
Date
Q1 2026
|
Polunin Capital Partners Ltd | New· Q1 2026 | – | +763K | – | Q1 2026 | |||||
|
Longaeva Partners L.P.
· New
Change
+708K
Date
Q1 2026
|
Longaeva Partners L.P. | New· Q1 2026 | – | +708K | – | Q1 2026 | |||||
|
Broad Bay Capital Management, LP
· Exited
Change
−652K
Δ Own
−100.0%
Date
Q1 2026
|
Broad Bay Capital Management, LP | Exited· Q1 2026 | – | −652K | −100.0% | Q1 2026 | |||||
|
Oxbow Capital Management (hk) Ltd
· New
Change
+597K
Date
Q1 2026
|
Oxbow Capital Management (hk) Ltd | New· Q1 2026 | – | +597K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Added
Change
+578K
Date
Q1 2026
|
Qube Research & Technologies Ltd | Added· Q1 2026 | – | +578K | – | Q1 2026 | |||||
|
Citigroup Inc
· Added
Change
+576K
Date
Q1 2026
|
Citigroup Inc | Added· Q1 2026 | – | +576K | – | Q1 2026 | |||||
|
Invesco Ltd.
· Reduced
Change
−555K
Δ Own
−41.4%
Date
Q1 2026
|
Invesco Ltd. | Reduced· Q1 2026 | – | −555K | −41.4% | Q1 2026 | |||||
|
Dimensional
· Added
Change
+485K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +485K | – | Q1 2026 | |||||
|
Mitsubishi Ufj Trust & Banking Corp
· Reduced
Change
−363K
Date
Q1 2026
|
Mitsubishi Ufj Trust & Banking Corp | Reduced· Q1 2026 | – | −363K | – | Q1 2026 | |||||
|
Discovery Capital Management, LLC / Ct
· Exited
Change
−296K
Δ Own
−100.0%
Date
Q1 2026
|
Discovery Capital Management, LLC / Ct | Exited· Q1 2026 | – | −296K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Cheav Sotheara
· Officer
4 operations
−$449K
|
Cheav Sotheara | Officer | 4 operations | $81.73–$85.41 | −5K | −$449K | 100K | – | Jun 5, 2026 | Jun 5, 2026 | |||||||||
|
Cheav Sotheara
· Officer
2 operations
0
|
Cheav Sotheara | Officer | 2 operations | $13.89 | 0 | – | 38K | – | Jun 5, 2026 | Jun 5, 2026 | |||||||||
|
Cheav Sotheara
· Officer
3 operations
−$1.1M
|
Cheav Sotheara | Officer | 3 operations | $84.08–$85.77 | −13K | −$1.1M | 100K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Cheav Sotheara
· Officer
2 operations
0
|
Cheav Sotheara | Officer | 2 operations | $13.89 | 0 | – | 43K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Wang David H.
· Director
5 operations
−$3.4M
|
Wang David H. | Director | 5 operations | $83.86–$87.91 | −40K | −$3.4M | 803K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Wang David H.
· Director
2 operations
0
|
Wang David H. | Director | 2 operations | $1.00 | 0 | – | 270K | – | Jun 4, 2026 | Jun 5, 2026 | |||||||||
|
Wang David H.
· Director
6 operations
−$5.4M
|
Wang David H. | Director | 6 operations | $87.57–$93.04 | −60K | −$5.4M | 803K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Wang David H.
· Director
2 operations
0
|
Wang David H. | Director | 2 operations | $1.00 | 0 | – | 310K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Wang David H.
· Director
Grant (A)
6K
|
Wang David H. | Director | Grant (A) | – | 6K | – | 6K | – | May 13, 2026 | Jul 6, 2026 | |||||||||
A
N
M
G
A
A
296 reporting institutions disclosed ACMR position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.