EMERALD ADVISERS, LLC: ATI position timeline

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

EMERALD ADVISERS, LLC held 20,385 ATI shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

period ended2026-06-30
13F 20,385 shares
Change vs previous 13F -257,878 shares
0.07% of the 13F portfolio, value $4,017,884.
13F-HR 0001104659-26-090959 filed by EMERALD ADVISERS, LLC
Filed 2026-08-05 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
- EMERALD ADVISERS, LLC: 15,917 shares
- EMERALD MUTUAL FUND ADVISERS TRUST: 0 shares
- Emerald Investment Advisers, LLC: 4,468 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 278,263 shares
Change vs previous 13F -795,829 shares
0.64% of the 13F portfolio, value $40,476,136.
13F-HR 0001104659-26-054901 filed by EMERALD ADVISERS, LLC
Filed 2026-05-04 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- EMERALD ADVISERS, LLC: 181,485 shares
- EMERALD MUTUAL FUND ADVISERS TRUST: 93,847 shares
- Emerald Investment Advisers, LLC: 2,931 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 1,074,092 shares
Change vs previous 13F not available
1.59% of the 13F portfolio, value $71,867,496.
13F-HR 0001104659-24-112224 filed by EMERALD ADVISERS, LLC
Filed 2024-10-29 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
- EMERALD ADVISERS, LLC: 637,468 shares
- EMERALD MUTUAL FUND ADVISERS TRUST: 436,624 shares
Acceptance time not in the bulk data set (spec §4.2).