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GRANDFIELD & DODD, LLC: AOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GRANDFIELD & DODD, LLC on AOS, newest first. How the timeline and the estimate are built.

GRANDFIELD & DODD, LLC held 210,330 AOS shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 210,330 shares
    Change vs previous 13F +120,224 shares

    0.69% of the 13F portfolio, value $13,191,898.

    13F-HR 0001308016-26-000004 filed by GRANDFIELD & DODD, 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 90,106 shares
    Change vs previous 13F +63,449 shares

    0.34% of the 13F portfolio, value $5,941,590.

    13F-HR 0001308016-26-000002 filed by GRANDFIELD & DODD, 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 26,657 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $1,782,820.

    13F-HR 0001308016-26-000001 filed by GRANDFIELD & DODD, LLC
    Filed (acceptance time not in the bulk data set), ingested

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