Polymer Capital Management (US) LLC: STX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Polymer Capital Management (US) LLC on STX, newest first. How the timeline and the estimate are built.

Polymer Capital Management (US) LLC held 1,535 STX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

period ended2026-06-30
13F 1,535 shares
Change vs previous 13F +613 shares
0.22% of the 13F portfolio, value $1,481,275.
13F-HR 0001973324-26-000009 filed by Polymer Capital Management (US) LLC
Filed 2026-08-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 922 shares
Change vs previous 13F -4,862 shares
0.05% of the 13F portfolio, value $361,203.
13F-HR 0001973324-26-000007 filed by Polymer Capital Management (US) LLC
Filed 2026-05-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 5,784 shares
Change vs previous 13F +4,043 shares
0.21% of the 13F portfolio, value $1,592,856.
13F-HR 0001973324-26-000003 filed by Polymer Capital Management (US) LLC
Filed 2026-02-17 (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 1,741 shares
Change vs previous 13F not available
0.05% of the 13F portfolio, value $410,980.
13F-HR 0001973324-25-000011 filed by Polymer Capital Management (US) LLC
Filed 2025-11-14 (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).