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Disclosery

MARSHALL WACE, LLP: BSX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MARSHALL WACE, LLP on BSX, newest first. How the timeline and the estimate are built.

MARSHALL WACE, LLP held 2,414,223 BSX shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,414,223 shares
    Change vs previous 13F -1,196,797 shares

    0.09% of the 13F portfolio, value $103,039,037.

    13F-HR 0001318757-26-000010 filed by MARSHALL WACE, LLP
    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 3,611,020 shares
    Change vs previous 13F +653,783 shares

    0.24% of the 13F portfolio, value $226,591,509.

    13F-HR 0001318757-26-000005 filed by MARSHALL WACE, LLP
    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 2,957,237 shares
    Change vs previous 13F -6,841,803 shares

    0.27% of the 13F portfolio, value $281,972,550.

    13F-HR 0001318757-26-000003 filed by MARSHALL WACE, LLP
    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 9,799,040 shares
    Change vs previous 13F +2,301,383 shares

    1.05% of the 13F portfolio, value $956,680,277.

    13F-HR 0001318757-25-000046 filed by MARSHALL WACE, LLP
    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 7,497,657 shares
    Change vs previous 13F -450,505 shares

    0.96% of the 13F portfolio, value $805,323,340.

    13F-HR 0001318757-25-000034 filed by MARSHALL WACE, LLP
    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 7,948,162 shares
    Change vs previous 13F -917,681 shares

    1.07% of the 13F portfolio, value $801,810,582.

    13F-HR 0001318757-25-000023 filed by MARSHALL WACE, LLP
    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 8,865,843 shares
    Change vs previous 13F +625,324 shares

    0.99% of the 13F portfolio, value $791,897,098.

    13F-HR 0002048047-25-000005 filed by MARSHALL WACE, LLP
    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 8,240,519 shares
    Change vs previous 13F not available

    0.9% of the 13F portfolio, value $690,555,494.

    13F-HR 0001318757-24-000018 filed by MARSHALL WACE, LLP
    Filed (acceptance time not in the bulk data set), ingested

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