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Disclosery

HENNESSY ADVISORS INC: ATO position timeline

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

HENNESSY ADVISORS INC held 148,286 ATO 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 148,286 shares
    Change vs previous 13F +5,000 shares

    0.82% of the 13F portfolio, value $25,545,229.

    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 143,286 shares
    Change vs previous 13F -1,100 shares

    0.96% of the 13F portfolio, value $26,467,790.

    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 144,386 shares
    Change vs previous 13F -3,700 shares

    0.86% of the 13F portfolio, value $24,203,425.

    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 148,086 shares
    Change vs previous 13F -16,200 shares

    0.87% of the 13F portfolio, value $25,285,685.

    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).

  5. period ended2025-06-30
    13F 164,286 shares
    Change vs previous 13F +3,500 shares

    0.84% of the 13F portfolio, value $25,318,115.

    13F-HR 0000897069-25-001186 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).

  6. period ended2025-03-31
    13F 160,786 shares
    Change vs previous 13F -12,100 shares

    0.83% of the 13F portfolio, value $24,854,300.

    13F-HR 0000897069-25-000822 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).

  7. period ended2024-12-31
    13F 172,886 shares
    Change vs previous 13F -3,900 shares

    0.72% of the 13F portfolio, value $24,077,833.

    13F-HR 0000897069-25-000103 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).

  8. period ended2024-09-30
    13F 176,786 shares
    Change vs previous 13F not available

    0.79% of the 13F portfolio, value $24,521,986.

    13F-HR 0000897069-24-001965 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).