Skip to content
Disclosery

GW&K Investment Management, LLC: MTX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GW&K Investment Management, LLC on MTX, newest first. How the timeline and the estimate are built.

GW&K Investment Management, LLC held 317,308 MTX shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 317,308 shares
    Change vs previous 13F -4,379 shares

    0.18% of the 13F portfolio, value $23,471,000.

    13F-HR 0001082917-26-000003 filed by GW&K Investment Management, 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 321,687 shares
    Change vs previous 13F -5,863 shares

    0.2% of the 13F portfolio, value $22,815,000.

    13F-HR 0001082917-26-000002 filed by GW&K Investment Management, 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 327,550 shares
    Change vs previous 13F -126,586 shares

    0.17% of the 13F portfolio, value $19,965,000.

    13F-HR 0001082917-26-000001 filed by GW&K Investment Management, 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 454,136 shares
    Change vs previous 13F -13,007 shares

    0.25% of the 13F portfolio, value $28,211,000.

    13F-HR 0001082917-25-000007 filed by GW&K Investment Management, 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 467,143 shares
    Change vs previous 13F +61,128 shares

    0.23% of the 13F portfolio, value $25,725,000.

    13F-HR 0001082917-25-000004 filed by GW&K Investment Management, 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 406,015 shares
    Change vs previous 13F -13,598 shares

    0.24% of the 13F portfolio, value $25,811,000.

    13F-HR 0001082917-25-000003 filed by GW&K Investment Management, 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 419,613 shares
    Change vs previous 13F -10,489 shares

    0.27% of the 13F portfolio, value $31,979,000.

    13F-HR 0001082917-25-000001 filed by GW&K Investment Management, 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 430,102 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $33,217,000.

    13F-HR 0001082917-24-000006 filed by GW&K Investment Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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