VANGUARD GROUP INC: UMC position timeline

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

VANGUARD GROUP INC held 10,715,855 UMC 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 10,715,855 shares
Change vs previous 13F -1,957,865 shares
<0.01% of the 13F portfolio, value $291,578,415.
13F-HR 0002100119-26-001527 filed by VANGUARD CAPITAL 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: 420,098 shares
- Vanguard Personalized Indexing Management, LLC: 434,448 shares
- Vanguard Global Advisers, LLC: 27,891 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 8,601,967 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 1,231,451 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 12,673,720 shares
Change vs previous 13F -1,262,696 shares
<0.01% of the 13F portfolio, value $113,810,006.
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: 440,567 shares
- Vanguard Personalized Indexing Management, LLC: 418,320 shares
- Vanguard Global Advisers, LLC: 63,308 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 8,988,443 shares
- VANGUARD PORTFOLIO MANAGEMENT LLC: 2,763,082 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 13,936,416 shares
Change vs previous 13F -649,375 shares
<0.01% of the 13F portfolio, value $109,540,230.
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: 13,524,036 shares
- Vanguard Personalized Indexing Management, LLC: 412,380 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 14,585,791 shares
Change vs previous 13F -605,388 shares
<0.01% of the 13F portfolio, value $110,560,295.
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: 14,252,440 shares
- Vanguard Personalized Indexing Management, LLC: 333,351 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 15,191,179 shares
Change vs previous 13F -798,476 shares
<0.01% of the 13F portfolio, value $116,212,519.
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: 14,825,471 shares
- Vanguard Personalized Indexing Management, LLC: 365,708 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 15,989,655 shares
Change vs previous 13F -193,777 shares
<0.01% of the 13F portfolio, value $114,326,034.
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: 15,712,184 shares
- Vanguard Personalized Indexing Management, LLC: 277,471 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 16,183,432 shares
Change vs previous 13F +687,954 shares
<0.01% of the 13F portfolio, value $105,030,474.
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: 15,947,754 shares
- Vanguard Personalized Indexing Management, LLC: 235,678 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 15,495,478 shares
Change vs previous 13F not available
<0.01% of the 13F portfolio, value $130,472,018.
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: 15,197,282 shares
- Vanguard Personalized Indexing Management, LLC: 298,196 shares
Acceptance time not in the bulk data set (spec §4.2).