VANGUARD GROUP INC: ACMR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VANGUARD GROUP INC on ACMR, newest first. How the timeline and the estimate are built.

VANGUARD GROUP INC held 6,298,802 ACMR shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

period ended2026-06-30
13F 6,298,802 shares
Change vs previous 13F +1,414,629 shares
0.01% of the 13F portfolio, value $799,254,986.
13F-HR 0002100121-26-001018 filed by VANGUARD PORTFOLIO MANAGEMENT LLC
Filed 2026-08-13 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
- VANGUARD FIDUCIARY TRUST CO: 404,100 shares
- Vanguard Investments Australia, Ltd.: 13,657 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 38,739 shares
- Vanguard Personalized Indexing Management, LLC: 3,718 shares
- Vanguard Global Advisers, LLC: 26,407 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 2,462,745 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 3,349,436 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 4,884,173 shares
Change vs previous 13F -87,930 shares
<0.01% of the 13F portfolio, value $192,192,208.
13F-HR/A 0002100119-26-001311 filed by VANGUARD CAPITAL MANAGEMENT LLC
Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- VANGUARD FIDUCIARY TRUST CO: 341,401 shares
- Vanguard Investments Australia, Ltd.: 12,810 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 35,911 shares
- Vanguard Global Advisers, LLC: 25,883 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 2,264,337 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 2,203,831 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 4,972,103 shares
Change vs previous 13F +125,690 shares
<0.01% of the 13F portfolio, value $196,149,463.
13F-HR 0000102909-26-000031 filed by VANGUARD GROUP INC
Filed 2026-01-29 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 4,846,413 shares
Change vs previous 13F +549,971 shares
<0.01% of the 13F portfolio, value $189,640,140.
13F-HR 0000102909-25-000353 filed by VANGUARD GROUP INC
Filed 2025-11-07 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 4,296,442 shares
Change vs previous 13F +241,096 shares
<0.01% of the 13F portfolio, value $111,277,847.
13F-HR 0001752724-25-185843 filed by VANGUARD GROUP INC
Filed 2025-08-11 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 4,055,346 shares
Change vs previous 13F -146,057 shares
<0.01% of the 13F portfolio, value $94,651,776.
13F-HR 0001752724-25-099331 filed by VANGUARD GROUP INC
Filed 2025-05-09 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 4,201,403 shares
Change vs previous 13F +67,255 shares
<0.01% of the 13F portfolio, value $63,441,186.
13F-HR 0001752724-25-022205 filed by VANGUARD GROUP INC
Filed 2025-02-11 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 4,134,148 shares
Change vs previous 13F not available
<0.01% of the 13F portfolio, value $83,923,204.
13F-HR 0001752724-24-248565 filed by VANGUARD GROUP INC
Filed 2024-11-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
Acceptance time not in the bulk data set (spec §4.2).