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TANAKA CAPITAL MANAGEMENT INC: SYM position timeline

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

TANAKA CAPITAL MANAGEMENT INC held 43,094 SYM 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 43,094 shares
    Change vs previous 13F -260 shares

    3.83% of the 13F portfolio, value $2,293,000.

    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 43,354 shares
    Change vs previous 13F -100 shares

    4.71% of the 13F portfolio, value $2,580,000.

    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 43,454 shares
    Change vs previous 13F -9,922 shares

    4.22% of the 13F portfolio, value $2,342,000.

    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 53,376 shares
    Change vs previous 13F -19,312 shares

    2.57% of the 13F portfolio, value $1,079,000.

    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 72,688 shares
    Change vs previous 13F +29,596 shares

    3.94% of the 13F portfolio, value $1,723,000.

    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 43,092 shares
    Change vs previous 13F +1,555 shares

    2.43% of the 13F portfolio, value $1,051,000.

    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 41,537 shares
    Change vs previous 13F not available

    3.46% of the 13F portfolio, value $1,460,000.

    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).