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BlackRock, Inc.: MGNX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BlackRock, Inc. on MGNX, newest first. How the timeline and the estimate are built.

BlackRock, Inc. held 4,679,229 MGNX shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,679,229 shares
    Change vs previous 13F +3,516,083 shares

    <0.01% of the 13F portfolio, value $21,618,040.

    13F-HR 0002012383-26-003238 filed by BlackRock, Inc.
    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 1,163,146 shares
    Change vs previous 13F +10,497 shares

    <0.01% of the 13F portfolio, value $3,361,492.

    13F-HR 0002012383-26-001841 filed by BlackRock, Inc.
    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 1,152,649 shares
    Change vs previous 13F -386,045 shares

    <0.01% of the 13F portfolio, value $1,855,766.

    13F-HR 0002012383-26-000920 filed by BlackRock, Inc.
    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 1,538,694 shares
    Change vs previous 13F -278,835 shares

    <0.01% of the 13F portfolio, value $2,585,006.

    13F-HR 0002012383-25-002949 filed by BlackRock, Inc.
    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 1,817,529 shares
    Change vs previous 13F -3,095,599 shares

    <0.01% of the 13F portfolio, value $2,199,211.

    13F-HR 0001060021-25-000120 filed by BlackRock, Inc.
    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 4,913,128 shares
    Change vs previous 13F -144,047 shares

    <0.01% of the 13F portfolio, value $6,239,673.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    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 5,057,175 shares
    Change vs previous 13F -348,297 shares

    <0.01% of the 13F portfolio, value $16,435,819.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    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 5,405,472 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $17,784,001.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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