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WELLINGTON MANAGEMENT GROUP LLP: MBX position timeline

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

WELLINGTON MANAGEMENT GROUP LLP held 4,977,523 MBX 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 4,977,523 shares
    Change vs previous 13F +1,785,699 shares

    0.05% of the 13F portfolio, value $274,759,269.

    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 3,191,824 shares
    Change vs previous 13F -158,137 shares

    0.02% of the 13F portfolio, value $95,275,947.

    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 3,349,961 shares
    Change vs previous 13F -1,473,375 shares

    0.02% of the 13F portfolio, value $105,657,771.

    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 4,823,336 shares
    Change vs previous 13F +2,556,708 shares

    0.01% of the 13F portfolio, value $84,408,382.

    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 2,266,628 shares
    Change vs previous 13F -371,893 shares

    <0.01% of the 13F portfolio, value $25,862,225.

    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 2,638,521 shares
    Change vs previous 13F -271,118 shares

    <0.01% of the 13F portfolio, value $19,472,286.

    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 2,909,639 shares
    Change vs previous 13F -28,214 shares

    0.01% of the 13F portfolio, value $52,991,925.

    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 2,937,853 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $74,261,258.

    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).