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RITHOLTZ WEALTH MANAGEMENT: AMX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of RITHOLTZ WEALTH MANAGEMENT on AMX, newest first. How the timeline and the estimate are built.

RITHOLTZ WEALTH MANAGEMENT held 35,153 AMX shares at 2026-06-30 per its 13F-HR/A filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 35,153 shares
    Change vs previous 13F +15,446 shares

    0.01% of the 13F portfolio, value $913,618.

    13F-HR/A 0001698218-26-000006 filed by RITHOLTZ WEALTH MANAGEMENT
    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 19,707 shares
    Change vs previous 13F +9,517 shares

    0.01% of the 13F portfolio, value $502,138.

    13F-HR 0001698218-26-000003 filed by RITHOLTZ WEALTH MANAGEMENT
    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 10,190 shares
    Change vs previous 13F +10,190 shares

    <0.01% of the 13F portfolio, value $210,630.

    13F-HR 0001698218-26-000001 filed by RITHOLTZ WEALTH MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -11,663 shares

    13F-HR 0001085146-25-002136 filed by RITHOLTZ WEALTH MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  5. period ended2024-12-31
    13F 11,663 shares
    Change vs previous 13F -7,613 shares

    <0.01% of the 13F portfolio, value $166,898.

    13F-HR 0001085146-25-000201 filed by RITHOLTZ WEALTH MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-09-30
    13F 19,276 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $315,360.

    13F-HR 0001085146-24-004785 filed by RITHOLTZ WEALTH MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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