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Disclosery

HENNESSY ADVISORS INC: ACM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HENNESSY ADVISORS INC on ACM, newest first. How the timeline and the estimate are built.

HENNESSY ADVISORS INC held 285,700 ACM shares at 2026-06-30 per its 13F-HR filed 2026-07-16.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 285,700 shares
    Change vs previous 13F 0 shares

    0.64% of the 13F portfolio, value $19,941,860.

    13F-HR 0000897069-26-001507 filed by HENNESSY ADVISORS INC
    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 285,700 shares
    Change vs previous 13F -29,900 shares

    0.88% of the 13F portfolio, value $24,233,074.

    13F-HR 0000897069-26-000920 filed by HENNESSY ADVISORS INC
    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 315,600 shares
    Change vs previous 13F -17,600 shares

    1.07% of the 13F portfolio, value $30,086,148.

    13F-HR 0000897069-26-000187 filed by HENNESSY ADVISORS INC
    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 333,200 shares
    Change vs previous 13F not available

    1.5% of the 13F portfolio, value $43,472,604.

    13F-HR 0000897069-25-001587 filed by HENNESSY ADVISORS INC
    Filed (acceptance time not in the bulk data set), ingested

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