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GAGNON SECURITIES LLC: AMRC position timeline

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

GAGNON SECURITIES LLC held 1,299,360 AMRC shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,299,360 shares
    Change vs previous 13F -13,501 shares

    5.3% of the 13F portfolio, value $35,862,336.

    13F-HR 0001019056-26-000123 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 826,562 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  2. period ended2026-03-31
    13F 1,312,861 shares
    Change vs previous 13F +7,179 shares

    5.88% of the 13F portfolio, value $33,477,956.

    13F-HR 0001019056-26-000076 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 840,063 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  3. period ended2025-12-31
    13F 1,305,682 shares
    Change vs previous 13F -26,525 shares

    5.9% of the 13F portfolio, value $38,243,425.

    13F-HR 0001019056-26-000037 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 832,884 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  4. period ended2025-09-30
    13F 1,332,207 shares
    Change vs previous 13F -10,836 shares

    6.77% of the 13F portfolio, value $44,735,511.

    13F-HR 0001019056-25-000228 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 859,409 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  5. period ended2025-06-30
    13F 1,343,043 shares
    Change vs previous 13F -98,283 shares

    3.18% of the 13F portfolio, value $20,400,824.

    13F-HR 0001019056-25-000196 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 870,245 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  6. period ended2025-03-31
    13F 1,441,326 shares
    Change vs previous 13F +597,430 shares

    2.92% of the 13F portfolio, value $17,411,218.

    13F-HR 0001019056-25-000173 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 968,528 shares
    • Gagnon Advisors, LLC: 472,798 shares

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

  7. period ended2024-12-31
    13F 843,896 shares
    Change vs previous 13F +171,607 shares

    3.04% of the 13F portfolio, value $19,814,678.

    13F-HR 0001019056-25-000034 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 571,202 shares
    • Gagnon Advisors, LLC: 272,694 shares

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

  8. period ended2024-09-30
    13F 672,289 shares
    Change vs previous 13F not available

    3.87% of the 13F portfolio, value $25,506,645.

    13F-HR 0001019056-24-000316 filed by GAGNON SECURITIES LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAGNON SECURITIES LLC: 466,341 shares
    • Gagnon Advisors, LLC: 205,948 shares

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