GAMCO Investors (Gabelli): AME position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMCO Investors (Gabelli) on AME, newest first. How the timeline and the estimate are built.

GAMCO Investors (Gabelli) held 1,412,285 AME shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

period ended2026-06-30
13F 1,412,285 shares
Change vs previous 13F -65,125 shares
1.27% of the 13F portfolio, value $341,688,233.
13F-HR 0001140361-26-032509 filed by GABELLI FUNDS LLC
Filed 2026-08-12 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
- GAMCO INVESTORS, INC. ET AL: 544,372 shares
- GABELLI FUNDS LLC: 867,913 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 1,477,410 shares
Change vs previous 13F -73,632 shares
1.27% of the 13F portfolio, value $316,697,608.
13F-HR 0001140361-26-021337 filed by GABELLI FUNDS LLC
Filed 2026-05-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- GAMCO INVESTORS, INC. ET AL: 548,597 shares
- GABELLI FUNDS LLC: 928,813 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 1,551,042 shares
Change vs previous 13F -25,384 shares
1.26% of the 13F portfolio, value $318,444,433.
13F-HR 0001140361-26-003893 filed by GABELLI FUNDS LLC
Filed 2026-02-05 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC
- GAMCO INVESTORS, INC. ET AL: 606,859 shares
- GABELLI FUNDS LLC: 944,183 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 1,576,426 shares
Change vs previous 13F -28,070 shares
1.18% of the 13F portfolio, value $296,368,088.
13F-HR 0001140361-25-041671 filed by GABELLI FUNDS LLC
Filed 2025-11-12 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC
- GAMCO INVESTORS, INC. ET AL: 622,749 shares
- GABELLI FUNDS LLC: 953,677 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 1,604,496 shares
Change vs previous 13F -16,606 shares
1.2% of the 13F portfolio, value $290,349,596.
13F-HR 0001140361-25-030816 filed by GABELLI FUNDS LLC
Filed 2025-08-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC
- GAMCO INVESTORS, INC. ET AL: 635,319 shares
- GABELLI FUNDS LLC: 969,177 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 1,621,102 shares
Change vs previous 13F -26,390 shares
1.26% of the 13F portfolio, value $279,056,498.
13F-HR 0001140361-25-018974 filed by GABELLI FUNDS LLC
Filed 2025-05-14 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
- GAMCO INVESTORS, INC. ET AL: 638,208 shares
- GABELLI FUNDS LLC: 982,894 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 1,647,492 shares
Change vs previous 13F -26,920 shares
1.3% of the 13F portfolio, value $296,976,907.
13F-HR 0001140361-25-004328 filed by GABELLI FUNDS LLC
Filed 2025-02-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC
- GAMCO INVESTORS, INC. ET AL: 653,148 shares
- GABELLI FUNDS LLC: 994,344 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 1,674,412 shares
Change vs previous 13F not available
1.22% of the 13F portfolio, value $287,513,284.
13F-HR 0001140361-24-046503 filed by GABELLI FUNDS LLC
Filed 2024-11-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
- GAMCO INVESTORS, INC. ET AL: 665,768 shares
- GABELLI FUNDS LLC: 1,008,644 shares
Acceptance time not in the bulk data set (spec §4.2).