VANGUARD GROUP INC: ATKR position timeline

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

VANGUARD GROUP INC held 3,925,585 ATKR 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 3,925,585 shares
Change vs previous 13F +34,711 shares
<0.01% of the 13F portfolio, value $298,501,482.
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: 223,986 shares
- Vanguard Investments Australia, Ltd.: 7,835 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 30,988 shares
- Vanguard Personalized Indexing Management, LLC: 2,835 shares
- Vanguard Global Advisers, LLC: 13,309 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 1,524,252 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 2,122,380 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 3,890,874 shares
Change vs previous 13F +254,934 shares
<0.01% of the 13F portfolio, value $229,211,388.
13F-HR 0002100121-26-000861 filed by VANGUARD PORTFOLIO MANAGEMENT LLC
Filed 2026-05-08 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- VANGUARD FIDUCIARY TRUST CO: 218,268 shares
- Vanguard Investments Australia, Ltd.: 7,835 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 30,988 shares
- Vanguard Global Advisers, LLC: 28,204 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 1,515,110 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 2,090,469 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 3,635,940 shares
Change vs previous 13F +3,346 shares
<0.01% of the 13F portfolio, value $229,973,205.
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 3,632,594 shares
Change vs previous 13F +269,841 shares
<0.01% of the 13F portfolio, value $227,908,948.
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
- VANGUARD GROUP INC: 3,632,594 shares
- Vanguard Personalized Indexing Management, LLC: 0 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 3,362,753 shares
Change vs previous 13F -162,333 shares
<0.01% of the 13F portfolio, value $237,242,241.
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
- VANGUARD GROUP INC: 3,359,128 shares
- Vanguard Personalized Indexing Management, LLC: 3,625 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 3,525,086 shares
Change vs previous 13F -161,027 shares
<0.01% of the 13F portfolio, value $211,469,923.
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
- VANGUARD GROUP INC: 3,520,389 shares
- Vanguard Personalized Indexing Management, LLC: 4,697 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 3,686,113 shares
Change vs previous 13F -75,395 shares
0.01% of the 13F portfolio, value $307,606,130.
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
- VANGUARD GROUP INC: 3,681,687 shares
- Vanguard Personalized Indexing Management, LLC: 4,426 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 3,761,508 shares
Change vs previous 13F not available
0.01% of the 13F portfolio, value $318,750,188.
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
- VANGUARD GROUP INC: 3,757,747 shares
- Vanguard Personalized Indexing Management, LLC: 3,761 shares
Acceptance time not in the bulk data set (spec §4.2).