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LOOMIS SAYLES & CO L P: AMTM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of LOOMIS SAYLES & CO L P on AMTM, newest first. How the timeline and the estimate are built.

LOOMIS SAYLES & CO L P held 1,042,522 AMTM 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 1,042,522 shares
    Change vs previous 13F -38,814 shares

    0.03% of the 13F portfolio, value $21,548,933.

    13F-HR 0000312348-26-000034 filed by LOOMIS SAYLES & CO L P
    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 1,081,336 shares
    Change vs previous 13F -37,594 shares

    0.04% of the 13F portfolio, value $28,201,231.

    13F-HR 0000312348-26-000026 filed by LOOMIS SAYLES & CO L P
    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 1,118,930 shares
    Change vs previous 13F +54,851 shares

    0.04% of the 13F portfolio, value $32,448,982.

    13F-HR 0000312348-26-000014 filed by LOOMIS SAYLES & CO L P
    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 1,064,079 shares
    Change vs previous 13F +4,870 shares

    0.03% of the 13F portfolio, value $25,484,702.

    13F-HR 0000312348-25-000035 filed by LOOMIS SAYLES & CO L P
    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 1,059,209 shares
    Change vs previous 13F +623,535 shares

    0.03% of the 13F portfolio, value $25,007,924.

    13F-HR 0000312348-25-000028 filed by LOOMIS SAYLES & CO L P
    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 435,674 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $7,929,000.

    13F-HR 0000312348-25-000021 filed by LOOMIS SAYLES & CO L P
    Filed (acceptance time not in the bulk data set), ingested

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