GAMCO Investors (Gabelli): AMAT position timeline

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

GAMCO Investors (Gabelli) held 88,870 AMAT 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 88,870 shares
Change vs previous 13F -7,457 shares
0.23% of the 13F portfolio, value $64,253,010.
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: 15,770 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 70,300 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 96,327 shares
Change vs previous 13F +2,396 shares
0.13% of the 13F portfolio, value $32,923,605.
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: 21,227 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 72,300 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 93,931 shares
Change vs previous 13F -2,021 shares
0.09% of the 13F portfolio, value $24,139,328.
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: 20,481 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 70,650 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 95,952 shares
Change vs previous 13F -564 shares
0.08% of the 13F portfolio, value $19,645,212.
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: 21,200 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 71,952 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 96,516 shares
Change vs previous 13F +6,378 shares
0.07% of the 13F portfolio, value $17,669,185.
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: 21,494 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 72,222 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 90,138 shares
Change vs previous 13F -4,065 shares
0.06% of the 13F portfolio, value $13,080,826.
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: 15,036 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 72,302 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 94,203 shares
Change vs previous 13F -67,599 shares
0.07% of the 13F portfolio, value $15,320,234.
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: 19,226 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,800 shares
- GABELLI FUNDS LLC: 72,177 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 161,802 shares
Change vs previous 13F not available
0.13% of the 13F portfolio, value $32,692,095.
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: 29,200 shares
- GABELLI & Co INVESTMENT ADVISERS, INC.: 2,450 shares
- GABELLI FUNDS LLC: 130,152 shares
Acceptance time not in the bulk data set (spec §4.2).