Skip to content
Disclosery

SIRIOS CAPITAL MANAGEMENT L P: BSX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SIRIOS CAPITAL MANAGEMENT L P on BSX, newest first. How the timeline and the estimate are built.

SIRIOS CAPITAL MANAGEMENT L P held 272,493 BSX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 272,493 shares
    Change vs previous 13F +14,586 shares

    1.41% of the 13F portfolio, value $11,630,001.

    13F-HR 0001104883-26-000008 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 257,907 shares
    Change vs previous 13F +171,706 shares

    1.96% of the 13F portfolio, value $16,183,664.

    13F-HR 0001104883-26-000005 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 86,201 shares
    Change vs previous 13F -1,220 shares

    1.02% of the 13F portfolio, value $8,219,265.

    13F-HR 0001104883-26-000003 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 87,421 shares
    Change vs previous 13F -2,493 shares

    1.11% of the 13F portfolio, value $8,534,912.

    13F-HR 0001104883-25-000015 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 89,914 shares
    Change vs previous 13F -23,746 shares

    1.4% of the 13F portfolio, value $9,657,663.

    13F-HR 0001104883-25-000010 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 113,660 shares
    Change vs previous 13F -70,156 shares

    2.05% of the 13F portfolio, value $11,466,021.

    13F-HR 0001104883-25-000006 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 183,816 shares
    Change vs previous 13F -5,543 shares

    2.95% of the 13F portfolio, value $16,418,445.

    13F-HR 0001104883-25-000004 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 189,359 shares
    Change vs previous 13F not available

    2.81% of the 13F portfolio, value $15,868,284.

    13F-HR 0001104883-24-000012 filed by SIRIOS CAPITAL MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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