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Rockingstone Advisors LLC: COST position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Rockingstone Advisors LLC on COST, newest first. How the timeline and the estimate are built.

Rockingstone Advisors LLC held 2,495 COST shares at 2026-06-30 per its 13F-HR filed 2026-07-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,495 shares
    Change vs previous 13F +54 shares

    0.94% of the 13F portfolio, value $2,333,998.

    13F-HR 0002027176-26-000003 filed by Rockingstone Advisors LLC
    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 2,441 shares
    Change vs previous 13F +5 shares

    1.12% of the 13F portfolio, value $2,432,286.

    13F-HR 0002027176-26-000002 filed by Rockingstone Advisors LLC
    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 2,436 shares
    Change vs previous 13F +161 shares

    0.96% of the 13F portfolio, value $2,100,660.

    13F-HR 0002027176-26-000001 filed by Rockingstone Advisors LLC
    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 2,275 shares
    Change vs previous 13F +6 shares

    1.04% of the 13F portfolio, value $2,105,808.

    13F-HR 0002027176-25-000007 filed by Rockingstone Advisors LLC
    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 2,269 shares
    Change vs previous 13F -999 shares

    1.18% of the 13F portfolio, value $2,246,174.

    13F-HR 0002027176-25-000004 filed by Rockingstone Advisors LLC
    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 3,268 shares
    Change vs previous 13F +46 shares

    1.39% of the 13F portfolio, value $3,090,809.

    13F-HR 0002027176-25-000003 filed by Rockingstone Advisors LLC
    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 3,222 shares
    Change vs previous 13F -192 shares

    1.3% of the 13F portfolio, value $2,952,222.

    13F-HR 0002027176-25-000001 filed by Rockingstone Advisors LLC
    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 3,414 shares
    Change vs previous 13F not available

    1.49% of the 13F portfolio, value $3,026,579.

    13F-HR 0002027176-24-000009 filed by Rockingstone Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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