Quantum Portfolio Management LLC: ATO position timeline

Quantum Portfolio Management LLC held 0 ATO shares at 2026-03-31 per its 13F-HR/A filed 2026-05-01.

the latest 13F is the newest step

1. period ended2026-03-31

   13F/A 0 shares

   Change vs previous 13F -4,704 shares

   13F-HR/A 0001172661-26-001580 filed by Quantum Portfolio Management LLC
   Filed 2026-05-01 (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).

   Exited: the 13F for this period no longer lists the position.

2. period ended2025-12-31

   13F 4,704 shares

   Change vs previous 13F -1,448 shares

   0.35% of the 13F portfolio, value $788,532.

   13F-HR 0001172661-26-000672 filed by Quantum Portfolio Management LLC
   Filed 2026-02-12 (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).

3. period ended2025-09-30

   13F 6,152 shares

   Change vs previous 13F +2,010 shares

   0.31% of the 13F portfolio, value $1,050,454.

   13F-HR 0001172661-25-004476 filed by Quantum Portfolio Management LLC
   Filed 2025-10-29 (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).

4. period ended2025-06-30

   13F 4,142 shares

   Change vs previous 13F +706 shares

   0.3% of the 13F portfolio, value $638,324.

   13F-HR 0001172661-25-003208 filed by Quantum Portfolio Management LLC
   Filed 2025-08-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC

   Acceptance time not in the bulk data set (spec §4.2).

5. period ended2025-03-31

   13F 3,436 shares

   Change vs previous 13F not available

   0.27% of the 13F portfolio, value $531,137.

   13F-HR 0001172661-25-001852 filed by Quantum Portfolio Management LLC
   Filed 2025-05-14 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC

   Acceptance time not in the bulk data set (spec §4.2).