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Boston Common Asset Management, LLC: ARGX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Boston Common Asset Management, LLC on ARGX, newest first. How the timeline and the estimate are built.

Boston Common Asset Management, LLC held 4,604 ARGX shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 4,604 shares
    Change vs previous 13F +1,014 shares

    0.26% of the 13F portfolio, value $4,414,822.

    13F-HR 0001409427-26-000014 filed by Boston Common Asset Management, LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 3,590 shares
    Change vs previous 13F -163 shares

    0.2% of the 13F portfolio, value $3,330,694.

    13F-HR 0001409427-26-000008 filed by Boston Common Asset Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2026-03-31
    13F 3,753 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $2,740,628.

    13F-HR 0001409427-26-000004 filed by Boston Common Asset Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).