OSSIAM: BIIB position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OSSIAM on BIIB, newest first. How the timeline and the estimate are built.
OSSIAM held 39,223 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-13.
the latest 13F is the newest step
- period ended2026-06-3013F 39,223 sharesChange vs previous 13F -1,737 shares
0.11% of the 13F portfolio, value $8,474,521.
13F-HR 0001104659-26-095927 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F 40,960 sharesChange vs previous 13F -21,303 shares
0.13% of the 13F portfolio, value $7,509,197.
13F-HR 0001104659-26-061158 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 62,263 sharesChange vs previous 13F -3,340 shares
0.22% of the 13F portfolio, value $10,957,665.
13F-HR 0001104659-26-015184 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-09-3013F 65,603 sharesChange vs previous 13F +15,116 shares
0.12% of the 13F portfolio, value $9,189,668.
13F-HR 0001104659-25-112000 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 50,487 sharesChange vs previous 13F -1,694 shares
0.07% of the 13F portfolio, value $6,340,662.
13F-HR 0001104659-25-077547 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-03-3113F 52,181 sharesChange vs previous 13F +1,818 shares
0.1% of the 13F portfolio, value $7,140,448.
13F-HR 0001104659-25-048513 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-12-3113F 50,363 sharesChange vs previous 13F +2,653 shares
0.13% of the 13F portfolio, value $7,701,510.
13F-HR 0001104659-25-012936 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-09-3013F 47,710 sharesChange vs previous 13F not available
0.18% of the 13F portfolio, value $9,248,106.
13F-HR 0001104659-24-117694 filed by OSSIAM
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).