VANGUARD GROUP INC: ATI position timeline

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

VANGUARD GROUP INC held 13,486,677 ATI 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 13,486,677 shares
Change vs previous 13F +484,778 shares
0.03% of the 13F portfolio, value $2,658,224,036.
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: 881,293 shares
- Vanguard Investments Australia, Ltd.: 34,530 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 115,324 shares
- Vanguard Personalized Indexing Management, LLC: 17,864 shares
- Vanguard Global Advisers, LLC: 54,550 shares
- Vanguard National Trust Co: 823 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 6,162,418 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 6,219,875 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 13,001,899 shares
Change vs previous 13F +259,209 shares
0.03% of the 13F portfolio, value $1,891,256,229.
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: 844,377 shares
- Vanguard Investments Australia, Ltd.: 34,056 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 104,824 shares
- Vanguard Personalized Indexing Management, LLC: 16,515 shares
- Vanguard Global Advisers, LLC: 55,668 shares
- Vanguard National Trust Co: 823 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 6,124,128 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 5,821,508 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 12,742,690 shares
Change vs previous 13F -325,023 shares
0.02% of the 13F portfolio, value $1,462,351,104.
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
- VANGUARD GROUP INC: 12,726,524 shares
- Vanguard Personalized Indexing Management, LLC: 16,166 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 13,067,713 shares
Change vs previous 13F -274,540 shares
0.02% of the 13F portfolio, value $1,062,927,775.
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: 13,054,247 shares
- Vanguard Personalized Indexing Management, LLC: 13,466 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 13,342,253 shares
Change vs previous 13F -559,486 shares
0.02% of the 13F portfolio, value $1,151,970,125.
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: 13,330,475 shares
- Vanguard Personalized Indexing Management, LLC: 11,778 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 13,901,739 shares
Change vs previous 13F -1,438,837 shares
0.01% of the 13F portfolio, value $723,307,481.
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: 13,896,542 shares
- Vanguard Personalized Indexing Management, LLC: 5,197 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 15,340,576 shares
Change vs previous 13F +2,019,669 shares
0.01% of the 13F portfolio, value $844,345,276.
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: 15,335,409 shares
- Vanguard Personalized Indexing Management, LLC: 5,167 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 13,320,907 shares
Change vs previous 13F not available
0.02% of the 13F portfolio, value $891,301,888.
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: 13,315,096 shares
- Vanguard Personalized Indexing Management, LLC: 5,811 shares
Acceptance time not in the bulk data set (spec §4.2).