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Disclosery

Sienna Gestion: AMAT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Sienna Gestion on AMAT, newest first. How the timeline and the estimate are built.

Sienna Gestion held 41,957 AMAT shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 41,957 shares
    Change vs previous 13F -16,898 shares

    1.73% of the 13F portfolio, value $29,470,332.

    13F-HR 0000945621-26-001042 filed by Sienna Gestion
    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 58,855 shares
    Change vs previous 13F -51,542 shares

    1.25% of the 13F portfolio, value $19,157,383.

    13F-HR 0000945621-26-000712 filed by Sienna Gestion
    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 110,397 shares
    Change vs previous 13F -2,824 shares

    1.7% of the 13F portfolio, value $28,557,122.

    13F-HR 0000945621-26-000314 filed by Sienna Gestion
    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 113,221 shares
    Change vs previous 13F 0 shares

    1.48% of the 13F portfolio, value $21,135,033.

    13F-HR 0000945621-25-001073 filed by Sienna Gestion
    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 113,221 shares
    Change vs previous 13F +10,468 shares

    1.3% of the 13F portfolio, value $18,923,837.

    13F-HR 0000945621-25-000651 filed by Sienna Gestion
    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 102,753 shares
    Change vs previous 13F -10,047 shares

    1.17% of the 13F portfolio, value $14,494,622.

    13F-HR 0000945621-25-000460 filed by Sienna Gestion
    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 112,800 shares
    Change vs previous 13F -29,414 shares

    1.24% of the 13F portfolio, value $18,342,007.

    13F-HR 0000945621-25-000148 filed by Sienna Gestion
    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 142,214 shares
    Change vs previous 13F not available

    1.91% of the 13F portfolio, value $28,664,833.

    13F-HR 0000945621-24-000939 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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