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MILLENNIUM MANAGEMENT LLC: ATRO position timeline

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

MILLENNIUM MANAGEMENT LLC held 325,117 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 325,117 shares
    Change vs previous 13F +105,094 shares

    0.02% of the 13F portfolio, value $26,419,007.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM 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 220,023 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $14,682,135.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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