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WELLINGTON MANAGEMENT GROUP LLP: MAS position timeline

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

WELLINGTON MANAGEMENT GROUP LLP held 3,789,629 MAS 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 3,789,629 shares
    Change vs previous 13F -445,709 shares

    0.05% of the 13F portfolio, value $308,362,112.

    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 4,235,338 shares
    Change vs previous 13F -591,246 shares

    0.05% of the 13F portfolio, value $255,687,355.

    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 4,826,584 shares
    Change vs previous 13F +2,085,454 shares

    0.05% of the 13F portfolio, value $306,295,022.

    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 2,741,130 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $192,948,141.

    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).