VANGUARD GROUP INC: OSTX position timeline

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

VANGUARD GROUP INC held 972,741 OSTX 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 972,741 shares
Change vs previous 13F +365,653 shares
<0.01% of the 13F portfolio, value $1,848,208.
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: 174,132 shares
- Vanguard Global Advisers, LLC: 20,958 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 777,651 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F/A 607,088 shares
Change vs previous 13F +66,667 shares
<0.01% of the 13F portfolio, value $855,994.
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: 116,663 shares
- Vanguard Global Advisers, LLC: 20,958 shares
- VANGUARD CAPITAL MANAGEMENT LLC: 469,467 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 540,421 shares
Change vs previous 13F +352,158 shares
<0.01% of the 13F portfolio, value $756,589.
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 188,263 shares
Change vs previous 13F not available
<0.01% of the 13F portfolio, value $368,995.
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).