DF DENT & CO INC: PDFS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DF DENT & CO INC on PDFS, newest first. How the timeline and the estimate are built.

DF DENT & CO INC held 354,951 PDFS shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

period ended2026-06-30
13F 354,951 shares
Change vs previous 13F +1,991 shares
0.48% of the 13F portfolio, value $25,127,000.
13F-HR 0000934999-26-000003 filed by DF DENT & CO INC
Filed 2026-08-14 (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 352,960 shares
Change vs previous 13F not available
0.22% of the 13F portfolio, value $11,545,334.
13F-HR 0000934999-26-000002 filed by DF DENT & CO INC
Filed 2026-05-15 (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).