Cornerstone Investment Partners, LLC: AMSC position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Cornerstone Investment Partners, LLC on AMSC, newest first. How the timeline and the estimate are built.
Cornerstone Investment Partners, LLC held 7,560 AMSC shares at 2026-06-30 per its 13F-HR filed 2026-08-07.
the latest 13F is the newest step
- period ended2026-06-3013F 7,560 sharesChange vs previous 13F -442 shares
0.01% of the 13F portfolio, value $313,816.
13F-HR 0001328062-26-000004 filed by Cornerstone Investment Partners, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F 8,002 sharesChange vs previous 13F +8,002 shares
0.01% of the 13F portfolio, value $270,868.
13F-HR 0001328062-26-000003 filed by Cornerstone Investment Partners, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 0 sharesChange vs previous 13F -6,102 shares
13F-HR 0001328062-26-000002 filed by Cornerstone Investment Partners, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
- period ended2025-09-3013F 6,102 sharesChange vs previous 13F -565 shares
0.02% of the 13F portfolio, value $362,398.
13F-HR 0001328062-25-000008 filed by Cornerstone Investment Partners, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 6,667 sharesChange vs previous 13F not available
0.01% of the 13F portfolio, value $244,612.
13F-HR 0001328062-25-000005 filed by Cornerstone Investment Partners, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).