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THOMPSON SIEGEL & WALMSLEY LLC: MAT position timeline

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

THOMPSON SIEGEL & WALMSLEY LLC held 587,056 MAT shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 587,056 shares
    Change vs previous 13F -34,457 shares

    0.15% of the 13F portfolio, value $8,148,000.

    13F-HR 0001008322-26-000009 filed by THOMPSON SIEGEL & WALMSLEY 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 621,513 shares
    Change vs previous 13F +333,713 shares

    0.16% of the 13F portfolio, value $9,031,000.

    13F-HR 0001008322-26-000006 filed by THOMPSON SIEGEL & WALMSLEY 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 287,800 shares
    Change vs previous 13F -247,506 shares

    0.1% of the 13F portfolio, value $5,710,000.

    13F-HR 0001008322-26-000003 filed by THOMPSON SIEGEL & WALMSLEY 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 535,306 shares
    Change vs previous 13F +131,696 shares

    0.15% of the 13F portfolio, value $9,009,000.

    13F-HR 0001008322-25-000017 filed by THOMPSON SIEGEL & WALMSLEY 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 403,610 shares
    Change vs previous 13F -5,144 shares

    0.13% of the 13F portfolio, value $7,959,000.

    13F-HR 0001008322-25-000011 filed by THOMPSON SIEGEL & WALMSLEY 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 408,754 shares
    Change vs previous 13F -128,933 shares

    0.13% of the 13F portfolio, value $7,942,000.

    13F-HR 0001008322-25-000008 filed by THOMPSON SIEGEL & WALMSLEY 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 537,687 shares
    Change vs previous 13F +65,379 shares

    0.15% of the 13F portfolio, value $9,533,000.

    13F-HR 0001008322-25-000003 filed by THOMPSON SIEGEL & WALMSLEY 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 472,308 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $8,997,000.

    13F-HR 0001008322-24-000016 filed by THOMPSON SIEGEL & WALMSLEY LLC
    Filed (acceptance time not in the bulk data set), ingested

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