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ArrowMark Colorado Holdings LLC: AMSC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ArrowMark Colorado Holdings LLC on AMSC, newest first. How the timeline and the estimate are built.

ArrowMark Colorado Holdings LLC held 159,432 AMSC shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 159,432 shares
    Change vs previous 13F +24,000 shares

    0.28% of the 13F portfolio, value $6,618,022.

    13F-HR 0001172661-26-003384 filed by ArrowMark Colorado Holdings 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 135,432 shares
    Change vs previous 13F +25,000 shares

    0.12% of the 13F portfolio, value $4,584,373.

    13F-HR 0001172661-26-002286 filed by ArrowMark Colorado Holdings 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 110,432 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $3,178,233.

    13F-HR 0001172661-26-001050 filed by ArrowMark Colorado Holdings 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 110,432 shares
    Change vs previous 13F -46,000 shares

    0.12% of the 13F portfolio, value $6,558,556.

    13F-HR 0001172661-25-005041 filed by ArrowMark Colorado Holdings 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 156,432 shares
    Change vs previous 13F +26,000 shares

    0.1% of the 13F portfolio, value $5,739,490.

    13F-HR 0001172661-25-003450 filed by ArrowMark Colorado Holdings 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 130,432 shares
    Change vs previous 13F -16,000 shares

    0.04% of the 13F portfolio, value $2,366,036.

    13F-HR 0001172661-25-002341 filed by ArrowMark Colorado Holdings 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 146,432 shares
    Change vs previous 13F -59,000 shares

    0.05% of the 13F portfolio, value $3,606,620.

    13F-HR 0001172661-25-001120 filed by ArrowMark Colorado Holdings 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 205,432 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $4,848,195.

    13F-HR 0001172661-24-005155 filed by ArrowMark Colorado Holdings LLC
    Filed (acceptance time not in the bulk data set), ingested

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