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ARIEL INVESTMENTS, LLC: MAT position timeline

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

ARIEL INVESTMENTS, LLC held 15,415,955 MAT 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 15,415,955 shares
    Change vs previous 13F +1,848,872 shares

    2.13% of the 13F portfolio, value $213,973,455.

    13F-HR 0000936753-26-000050 filed by ARIEL INVESTMENTS, 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 13,567,083 shares
    Change vs previous 13F +1,034,950 shares

    2.21% of the 13F portfolio, value $197,129,716.

    13F-HR 0000936753-26-000025 filed by ARIEL INVESTMENTS, 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 12,532,133 shares
    Change vs previous 13F -1,228,337 shares

    2.69% of the 13F portfolio, value $248,637,519.

    13F-HR 0000936753-26-000017 filed by ARIEL INVESTMENTS, 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 13,760,470 shares
    Change vs previous 13F -460,316 shares

    2.48% of the 13F portfolio, value $231,588,710.

    13F-HR 0000936753-25-000089 filed by ARIEL INVESTMENTS, 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 14,220,786 shares
    Change vs previous 13F +362,671 shares

    3.18% of the 13F portfolio, value $280,433,899.

    13F-HR 0000936753-25-000065 filed by ARIEL INVESTMENTS, 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 13,858,115 shares
    Change vs previous 13F -962,630 shares

    3.16% of the 13F portfolio, value $269,263,175.

    13F-HR 0000936753-25-000029 filed by ARIEL INVESTMENTS, 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 14,820,745 shares
    Change vs previous 13F +12,583 shares

    2.8% of the 13F portfolio, value $262,771,809.

    13F-HR 0000936753-25-000018 filed by ARIEL INVESTMENTS, 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 14,808,162 shares
    Change vs previous 13F not available

    2.88% of the 13F portfolio, value $282,095,486.

    13F-HR 0000936753-24-000085 filed by ARIEL INVESTMENTS, LLC
    Filed (acceptance time not in the bulk data set), ingested

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