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Driehaus Capital Management LLC: ATRO position timeline

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

Driehaus Capital Management LLC held 257,865 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 257,865 shares
    Change vs previous 13F -68,606 shares

    0.12% of the 13F portfolio, value $20,954,110.

    13F-HR 0000938206-26-000048 filed by Driehaus Capital Management 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 326,471 shares
    Change vs previous 13F -340,027 shares

    0.16% of the 13F portfolio, value $21,785,410.

    13F-HR 0000938206-26-000031 filed by Driehaus Capital Management 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 666,498 shares
    Change vs previous 13F +405,693 shares

    0.25% of the 13F portfolio, value $36,150,852.

    13F-HR 0000938206-26-000018 filed by Driehaus Capital Management 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 260,805 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $11,895,316.

    13F-HR 0000938206-25-000056 filed by Driehaus Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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