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Disclosery

Senator Investment Group LP: BSX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Senator Investment Group LP on BSX, newest first. How the timeline and the estimate are built.

Senator Investment Group LP held 300,000 BSX shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 300,000 shares
    Change vs previous 13F +300,000 shares

    0.47% of the 13F portfolio, value $12,804,000.

    13F-HR 0001443689-26-000009 filed by Senator Investment Group LP
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -450,000 shares

    13F-HR 0001443689-25-000009 filed by Senator Investment Group LP
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  3. period ended2024-12-31
    13F 450,000 shares
    Change vs previous 13F 0 shares

    1.18% of the 13F portfolio, value $40,194,000.

    13F-HR 0001443689-25-000003 filed by Senator Investment Group LP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2024-09-30
    13F 450,000 shares
    Change vs previous 13F not available

    1.79% of the 13F portfolio, value $37,710,000.

    13F-HR 0001443689-24-000016 filed by Senator Investment Group LP
    Filed (acceptance time not in the bulk data set), ingested

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