VANGUARD GROUP INC: ATRC position timeline

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

VANGUARD GROUP INC held 5,753,015 ATRC 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 5,753,015 shares
Change vs previous 13F +466,730 shares
<0.01% of the 13F portfolio, value $160,969,359.
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: 359,048 shares
- Vanguard Investments Australia, Ltd.: 12,181 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 44,784 shares
- Vanguard Personalized Indexing Management, LLC: 0 shares
- Vanguard Global Advisers, LLC: 19,394 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 2,190,413 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 3,127,195 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 5,286,285 shares
Change vs previous 13F +377,172 shares
<0.01% of the 13F portfolio, value $150,817,713.
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: 342,854 shares
- Vanguard Investments Australia, Ltd.: 12,181 shares
- VANGUARD ASSET MANAGEMENT, Ltd: 44,784 shares
- Vanguard Personalized Indexing Management, LLC: 8,635 shares
- Vanguard Global Advisers, LLC: 19,435 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 2,155,764 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 2,702,632 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 4,909,113 shares
Change vs previous 13F +68,219 shares
<0.01% of the 13F portfolio, value $194,204,510.
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: 4,903,755 shares
- Vanguard Personalized Indexing Management, LLC: 5,358 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 4,840,894 shares
Change vs previous 13F -65,324 shares
<0.01% of the 13F portfolio, value $170,641,514.
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 4,906,218 shares
Change vs previous 13F +191,847 shares
<0.01% of the 13F portfolio, value $160,776,765.
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 4,714,371 shares
Change vs previous 13F +61,166 shares
<0.01% of the 13F portfolio, value $152,085,609.
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 4,653,205 shares
Change vs previous 13F -6,576 shares
<0.01% of the 13F portfolio, value $142,201,945.
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 4,659,781 shares
Change vs previous 13F not available
<0.01% of the 13F portfolio, value $130,660,260.
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).