Avidity Partners Management LP: JBIO position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Avidity Partners Management LP on JBIO, newest first. How the timeline and the estimate are built.
Avidity Partners Management LP held 1,700,708 JBIO shares at 2026-06-30 per its 13F-HR filed 2026-08-14.
the latest 13F is the newest step
- period ended2026-06-3013F 1,700,708 sharesChange vs previous 13F +300,000 shares
6.05% of the 13F portfolio, value $37,789,732.
13F-HR 0001791827-26-000005 filed by Avidity Partners Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F/A 1,400,708 sharesChange vs previous 13F 0 shares
3.99% of the 13F portfolio, value $19,679,947.
13F-HR/A 0001791827-26-000004 filed by Avidity Partners Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 1,400,708 sharesChange vs previous 13F +273,522 shares
6.23% of the 13F portfolio, value $21,612,924.
13F-HR 0001791827-26-000002 filed by Avidity Partners Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-09-3013F 1,127,186 sharesChange vs previous 13F 0 shares
2.21% of the 13F portfolio, value $9,727,615.
13F-HR 0001791827-25-000008 filed by Avidity Partners Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 1,127,186 sharesChange vs previous 13F not available
2.26% of the 13F portfolio, value $11,260,588.
13F-HR 0001791827-25-000007 filed by Avidity Partners Management LP
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).