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WELLINGTON MANAGEMENT GROUP LLP: MGNI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WELLINGTON MANAGEMENT GROUP LLP on MGNI, newest first. How the timeline and the estimate are built.

WELLINGTON MANAGEMENT GROUP LLP held 6,044,492 MGNI 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 6,044,492 shares
    Change vs previous 13F -3,146,585 shares

    0.02% of the 13F portfolio, value $114,724,458.

    13F-HR 0000902219-26-000311 filed by WELLINGTON MANAGEMENT GROUP 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 9,191,077 shares
    Change vs previous 13F +561,839 shares

    0.02% of the 13F portfolio, value $109,189,995.

    13F-HR 0000902219-26-000209 filed by WELLINGTON MANAGEMENT GROUP 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 8,629,238 shares
    Change vs previous 13F +3,484,689 shares

    0.02% of the 13F portfolio, value $140,052,533.

    13F-HR 0000902219-26-000103 filed by WELLINGTON MANAGEMENT GROUP 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 5,144,549 shares
    Change vs previous 13F -303,288 shares

    0.02% of the 13F portfolio, value $112,048,278.

    13F-HR 0000902219-25-000462 filed by WELLINGTON MANAGEMENT GROUP 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 5,447,837 shares
    Change vs previous 13F -455,434 shares

    0.02% of the 13F portfolio, value $131,401,828.

    13F-HR 0000902219-25-000356 filed by WELLINGTON MANAGEMENT GROUP 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 5,903,271 shares
    Change vs previous 13F -1,126,740 shares

    0.01% of the 13F portfolio, value $67,356,323.

    13F-HR 0000902219-25-000242 filed by WELLINGTON MANAGEMENT GROUP 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/A 7,030,011 shares
    Change vs previous 13F +450,341 shares

    0.02% of the 13F portfolio, value $111,917,776.

    13F-HR 0000902219-25-000131 filed by WELLINGTON MANAGEMENT GROUP 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 6,579,670 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $91,128,430.

    13F-HR 0000902219-24-000498 filed by WELLINGTON MANAGEMENT GROUP LLP
    Filed (acceptance time not in the bulk data set), ingested

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