Winchester Group Inc.: AMGN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Winchester Group Inc. on AMGN, newest first. How the timeline and the estimate are built.

Winchester Group Inc. held 16,720 AMGN shares at 2013-09-30 per its 13F-HR filed 2013-10-16.

the latest 13F is the newest step

period ended2013-09-30
13F 16,720 shares
Change vs previous 13F 0 shares
0.41% of the 13F portfolio, value $1,871,000.
13F-HR 0001085146-13-001704 filed by Winchester Group Inc.
Filed 2013-10-16 (acceptance time not in the bulk data set), ingested 2026-10-07 20:02:22 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2013-06-30
13F 16,720 shares
Change vs previous 13F not available
0.35% of the 13F portfolio, value $1,649,000.
13F-HR 0001085146-13-001309 filed by Winchester Group Inc.
Filed 2013-08-07 (acceptance time not in the bulk data set), ingested 2026-10-06 09:59:42 UTC
Acceptance time not in the bulk data set (spec §4.2).