ZACKS INVESTMENT MANAGEMENT: PRK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ZACKS INVESTMENT MANAGEMENT on PRK, newest first. How the timeline and the estimate are built.

ZACKS INVESTMENT MANAGEMENT held 22,618 PRK shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

period ended2026-06-30
13F 22,618 shares
Change vs previous 13F +4,943 shares
0.03% of the 13F portfolio, value $4,139,013.
13F-HR 0001172661-26-003391 filed by ZACKS INVESTMENT MANAGEMENT
Filed 2026-08-13 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 17,675 shares
Change vs previous 13F +1,999 shares
0.02% of the 13F portfolio, value $2,888,964.
13F-HR 0001172661-26-001904 filed by ZACKS INVESTMENT MANAGEMENT
Filed 2026-05-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 15,676 shares
Change vs previous 13F -1,023 shares
0.02% of the 13F portfolio, value $2,385,564.
13F-HR 0001172661-26-000942 filed by ZACKS INVESTMENT MANAGEMENT
Filed 2026-02-17 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 16,699 shares
Change vs previous 13F +1,417 shares
0.02% of the 13F portfolio, value $2,714,312.
13F-HR 0001172661-25-005127 filed by ZACKS INVESTMENT MANAGEMENT
Filed 2025-11-14 (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).
period ended2025-06-30
13F 15,282 shares
Change vs previous 13F not available
0.02% of the 13F portfolio, value $2,556,108.
13F-HR 0001172661-25-003061 filed by ZACKS INVESTMENT MANAGEMENT
Filed 2025-08-12 (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).