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NEXT CENTURY GROWTH INVESTORS LLC: ATRO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of NEXT CENTURY GROWTH INVESTORS LLC on ATRO, newest first. How the timeline and the estimate are built.

NEXT CENTURY GROWTH INVESTORS LLC held 743,086 ATRO 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 743,086 shares
    Change vs previous 13F -43,231 shares

    3.2% of the 13F portfolio, value $60,383,168.

    13F-HR 0001134007-26-000006 filed by NEXT CENTURY GROWTH INVESTORS 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 786,317 shares
    Change vs previous 13F -281,295 shares

    3.8% of the 13F portfolio, value $52,470,933.

    13F-HR 0001134007-26-000003 filed by NEXT CENTURY GROWTH INVESTORS 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 1,067,612 shares
    Change vs previous 13F -146,675 shares

    4.02% of the 13F portfolio, value $57,907,274.

    13F-HR 0001134007-26-000002 filed by NEXT CENTURY GROWTH INVESTORS 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 1,214,287 shares
    Change vs previous 13F -53,587 shares

    4.04% of the 13F portfolio, value $55,383,630.

    13F-HR 0001134007-25-000012 filed by NEXT CENTURY GROWTH INVESTORS 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 1,267,874 shares
    Change vs previous 13F -21,422 shares

    3.28% of the 13F portfolio, value $42,448,421.

    13F-HR 0001134007-25-000009 filed by NEXT CENTURY GROWTH INVESTORS 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 1,289,296 shares
    Change vs previous 13F -248,629 shares

    2.77% of the 13F portfolio, value $31,162,284.

    13F-HR 0001134007-25-000007 filed by NEXT CENTURY GROWTH INVESTORS 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 1,537,925 shares
    Change vs previous 13F -750,293 shares

    1.84% of the 13F portfolio, value $24,545,283.

    13F-HR 0001134007-25-000002 filed by NEXT CENTURY GROWTH INVESTORS 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 2,288,218 shares
    Change vs previous 13F not available

    3.61% of the 13F portfolio, value $44,574,486.

    13F-HR 0001134007-24-000008 filed by NEXT CENTURY GROWTH INVESTORS LLC
    Filed (acceptance time not in the bulk data set), ingested

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