CORBYN INVESTMENT MANAGEMENT INC/MD: ZD position timeline

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

CORBYN INVESTMENT MANAGEMENT INC/MD held 64,909 ZD shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

period ended2026-06-30
13F 64,909 shares
Change vs previous 13F -27,432 shares
0.98% of the 13F portfolio, value $3,399,284.
13F-HR 0001999371-26-017146 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2026-08-06 (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 92,341 shares
Change vs previous 13F -911 shares
1.29% of the 13F portfolio, value $3,874,628.
13F-HR 0002000324-26-001733 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2026-04-28 (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 93,252 shares
Change vs previous 13F -16,618 shares
0.96% of the 13F portfolio, value $3,277,808.
13F-HR 0001999371-26-000774 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2026-01-13 (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 109,870 shares
Change vs previous 13F -25,353 shares
1.23% of the 13F portfolio, value $4,186,047.
13F-HR 0001999371-25-015845 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2025-10-22 (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 135,223 shares
Change vs previous 13F +21,586 shares
1.38% of the 13F portfolio, value $4,093,200.
13F-HR 0000919538-25-000003 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2025-08-08 (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).
period ended2025-03-31
13F 113,637 shares
Change vs previous 13F +3,199 shares
1.59% of the 13F portfolio, value $4,270,478.
13F-HR 0000919538-25-000002 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2025-05-09 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 110,438 shares
Change vs previous 13F -126 shares
2.15% of the 13F portfolio, value $6,001,201.
13F-HR 0000919538-25-000001 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2025-02-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 110,564 shares
Change vs previous 13F not available
2.06% of the 13F portfolio, value $5,380,044.
13F-HR 0000919538-24-000004 filed by CORBYN INVESTMENT MANAGEMENT INC/MD
Filed 2024-11-07 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
Acceptance time not in the bulk data set (spec §4.2).