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TANAKA CAPITAL MANAGEMENT INC: AMAT position timeline

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

TANAKA CAPITAL MANAGEMENT INC held 6,953 AMAT shares at 2026-03-31 per its 13F-HR filed 2026-05-18.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 6,953 shares
    Change vs previous 13F -35 shares

    3.97% of the 13F portfolio, value $2,376,000.

    13F-HR 0000816788-26-000002 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2025-12-31
    13F 6,988 shares
    Change vs previous 13F -35 shares

    3.31% of the 13F portfolio, value $1,817,000.

    13F-HR 0000816788-26-000001 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 7,023 shares
    Change vs previous 13F -60 shares

    2.59% of the 13F portfolio, value $1,438,000.

    13F-HR 0000816788-25-000005 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 7,083 shares
    Change vs previous 13F +17 shares

    2.45% of the 13F portfolio, value $1,028,000.

    13F-HR 0000816788-25-000002 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-12-31
    13F 7,066 shares
    Change vs previous 13F -915 shares

    2.63% of the 13F portfolio, value $1,149,000.

    13F-HR 0000816788-25-000001 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-09-30
    13F 7,981 shares
    Change vs previous 13F +800 shares

    3.73% of the 13F portfolio, value $1,613,000.

    13F-HR 0000816788-24-000004 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-06-30
    13F 7,181 shares
    Change vs previous 13F not available

    4.01% of the 13F portfolio, value $1,695,000.

    13F-HR 0000816788-24-000003 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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