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GW&K Investment Management, LLC: AMT position timeline

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

GW&K Investment Management, LLC held 4,795 AMT 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 4,795 shares
    Change vs previous 13F -1,034 shares

    0.01% of the 13F portfolio, value $784,000.

    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 5,829 shares
    Change vs previous 13F -148,082 shares

    0.01% of the 13F portfolio, value $1,006,000.

    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 153,911 shares
    Change vs previous 13F -2,015 shares

    0.23% of the 13F portfolio, value $27,022,000.

    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 155,926 shares
    Change vs previous 13F -1,659 shares

    0.27% of the 13F portfolio, value $29,988,000.

    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 157,585 shares
    Change vs previous 13F -15,101 shares

    0.31% of the 13F portfolio, value $34,829,000.

    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 172,686 shares
    Change vs previous 13F +3,048 shares

    0.35% of the 13F portfolio, value $37,576,000.

    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 169,638 shares
    Change vs previous 13F -7,237 shares

    0.26% of the 13F portfolio, value $31,113,000.

    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 176,875 shares
    Change vs previous 13F not available

    0.35% of the 13F portfolio, value $41,134,000.

    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).