Square Wave Capital, LLC: ATI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Square Wave Capital, LLC on ATI, newest first. How the timeline and the estimate are built.

Square Wave Capital, LLC held 444,800 ATI 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 444,800 shares
Change vs previous 13F +78,400 shares
13.08% of the 13F portfolio, value $87,670,080.
13F-HR 0001213900-26-089594 filed by Square Wave Capital, 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 366,400 shares
Change vs previous 13F not available
12.89% of the 13F portfolio, value $53,296,544.
13F-HR 0001213900-26-057257 filed by Square Wave Capital, LLC
Filed 2026-05-15 (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).