ZPR Investment Management: AEIS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ZPR Investment Management on AEIS, newest first. How the timeline and the estimate are built.

ZPR Investment Management held 0 AEIS shares at 2018-12-31 per its 13F-HR filed 2019-02-14.

the latest 13F is the newest step

period ended2018-12-31
13F 0 shares
Change vs previous 13F -29,255 shares
13F-HR 0001085146-19-000797 filed by ZPR Investment Management
Filed 2019-02-14 (acceptance time not in the bulk data set), ingested 2026-10-07 19:02:51 UTC
Acceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
period ended2018-09-30
13F 29,255 shares
Change vs previous 13F -14,200 shares
2.29% of the 13F portfolio, value $1,511,000.
13F-HR 0001085146-18-002729 filed by ZPR Investment Management
Filed 2018-11-14 (acceptance time not in the bulk data set), ingested 2026-10-07 19:03:47 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2018-06-30
13F 43,455 shares
Change vs previous 13F +3,415 shares
3.38% of the 13F portfolio, value $2,524,000.
13F-HR 0001085146-18-002128 filed by ZPR Investment Management
Filed 2018-08-14 (acceptance time not in the bulk data set), ingested 2026-10-07 19:04:44 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2018-03-31
13F 40,040 shares
Change vs previous 13F +10,600 shares
3.69% of the 13F portfolio, value $2,559,000.
13F-HR 0001085146-18-001541 filed by ZPR Investment Management
Filed 2018-05-16 (acceptance time not in the bulk data set), ingested 2026-10-07 19:05:42 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2017-12-31
13F 29,440 shares
Change vs previous 13F not available
2.87% of the 13F portfolio, value $1,987,000.
13F-HR 0001085146-18-000808 filed by ZPR Investment Management
Filed 2018-02-14 (acceptance time not in the bulk data set), ingested 2026-10-07 19:06:41 UTC
Acceptance time not in the bulk data set (spec §4.2).