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EMERALD ADVISERS, LLC: ONTO position timeline

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

EMERALD ADVISERS, LLC held 145,512 ONTO 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 145,512 shares
    Change vs previous 13F -43,841 shares

    0.78% of the 13F portfolio, value $55,069,017.

    13F-HR 0001104659-26-090959 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 87,619 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 57,893 shares

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

  2. period ended2026-03-31
    13F 189,353 shares
    Change vs previous 13F not available

    0.74% of the 13F portfolio, value $38,830,620.

    13F-HR 0001104659-26-054901 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 118,423 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 70,930 shares

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