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Disclosery

Cornerstone Advisory, LLC: AMT position timeline

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

Cornerstone Advisory, LLC held 2,861 AMT shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,861 shares
    Change vs previous 13F -311 shares

    0.04% of the 13F portfolio, value $468,006.

    13F-HR 0001765380-26-000238 filed by Cornerstone Advisory, 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 3,172 shares
    Change vs previous 13F +279 shares

    0.05% of the 13F portfolio, value $547,346.

    13F-HR 0001765380-26-000144 filed by Cornerstone Advisory, 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 2,893 shares
    Change vs previous 13F -341 shares

    0.05% of the 13F portfolio, value $507,860.

    13F-HR 0001765380-26-000050 filed by Cornerstone Advisory, 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 3,234 shares
    Change vs previous 13F +17 shares

    0.06% of the 13F portfolio, value $621,897.

    13F-HR 0001765380-25-000443 filed by Cornerstone Advisory, 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 3,217 shares
    Change vs previous 13F -3 shares

    0.08% of the 13F portfolio, value $711,100.

    13F-HR 0001765380-25-000271 filed by Cornerstone Advisory, 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 3,220 shares
    Change vs previous 13F +96 shares

    0.08% of the 13F portfolio, value $720,748.

    13F-HR 0001765380-25-000178 filed by Cornerstone Advisory, 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 3,124 shares
    Change vs previous 13F +113 shares

    0.07% of the 13F portfolio, value $591,536.

    13F-HR 0001765380-25-000128 filed by Cornerstone Advisory, 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 3,011 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $700,238.

    13F-HR 0001765380-24-000416 filed by Cornerstone Advisory, LLC
    Filed (acceptance time not in the bulk data set), ingested

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