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Disclosery

ProShare Advisors LLC: BIIB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ProShare Advisors LLC on BIIB, newest first. How the timeline and the estimate are built.

ProShare Advisors LLC held 35,127 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 35,127 shares
    Change vs previous 13F -799 shares

    0.01% of the 13F portfolio, value $7,589,539.

    13F-HR 0001357955-26-000003 filed by ProShare Advisors LLC
    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 35,926 shares
    Change vs previous 13F -5,570 shares

    0.01% of the 13F portfolio, value $6,586,314.

    13F-HR 0001357955-26-000002 filed by ProShare Advisors LLC
    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 41,496 shares
    Change vs previous 13F -155,668 shares

    0.01% of the 13F portfolio, value $7,302,881.

    13F-HR 0001357955-26-000001 filed by ProShare Advisors LLC
    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 197,164 shares
    Change vs previous 13F -41,394 shares

    0.06% of the 13F portfolio, value $27,618,734.

    13F-HR 0001357955-25-000003 filed by ProShare Advisors LLC
    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 238,558 shares
    Change vs previous 13F +13,903 shares

    0.06% of the 13F portfolio, value $29,960,499.

    13F-HR 0001085146-25-004670 filed by ProShare Advisors LLC
    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 224,655 shares
    Change vs previous 13F +26,329 shares

    0.07% of the 13F portfolio, value $30,741,790.

    13F-HR 0001085146-25-002761 filed by ProShare Advisors LLC
    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 198,326 shares
    Change vs previous 13F +29,294 shares

    0.07% of the 13F portfolio, value $30,328,011.

    13F-HR 0001085146-25-001369 filed by ProShare Advisors LLC
    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 169,032 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $32,765,164.

    13F-HR 0001085146-24-005691 filed by ProShare Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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