Burgundy Asset Management Ltd.: ATAT position timeline

Burgundy Asset Management Ltd. held 774,823 ATAT shares at 2025-09-30 per its 13F-HR filed 2025-11-12.

the latest 13F is the newest step

1. period ended2025-09-30

   13F 774,823 shares

   Change vs previous 13F +141,049 shares

   0.28% of the 13F portfolio, value $30,156,111.

   13F-HR 0001193125-25-277473 filed by Burgundy Asset Management Ltd.
   Filed 2025-11-12 (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).

2. period ended2025-06-30

   13F 633,774 shares

   Change vs previous 13F +48,931 shares

   0.2% of the 13F portfolio, value $20,603,993.

   13F-HR 0000950123-25-007831 filed by Burgundy Asset Management Ltd.
   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).

3. period ended2025-03-31

   13F 584,843 shares

   Change vs previous 13F +37,400 shares

   0.17% of the 13F portfolio, value $16,580,299.

   13F-HR 0000950123-25-004910 filed by Burgundy Asset Management Ltd.
   Filed 2025-05-13 (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).

4. period ended2024-12-31

   13F 547,443 shares

   Change vs previous 13F -31,740 shares

   0.15% of the 13F portfolio, value $14,720,742.

   13F-HR 0000950123-25-002842 filed by Burgundy Asset Management Ltd.
   Filed 2025-02-18 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC

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

5. period ended2024-09-30

   13F 579,183 shares

   Change vs previous 13F not available

   0.15% of the 13F portfolio, value $15,024,007.

   13F-HR 0000950123-24-010976 filed by Burgundy Asset Management Ltd.
   Filed 2024-11-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC

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