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Disclosery

Barton Investment Management: GFL position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Barton Investment Management on GFL, newest first. How the timeline and the estimate are built.

Barton Investment Management held 415,541 GFL shares at 2026-06-30 per its 13F-HR filed 2026-07-20.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 415,541 shares
    Change vs previous 13F -3,934 shares

    2.07% of the 13F portfolio, value $15,287,754.

    13F-HR 0001387818-26-000003 filed by Barton Investment Management
    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 419,475 shares
    Change vs previous 13F -675 shares

    2.19% of the 13F portfolio, value $17,500,497.

    13F-HR 0001387818-26-000002 filed by Barton Investment Management
    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 420,150 shares
    Change vs previous 13F +2,852 shares

    1.94% of the 13F portfolio, value $18,045,443.

    13F-HR 0001387818-26-000001 filed by Barton Investment Management
    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 417,298 shares
    Change vs previous 13F -2,380 shares

    2.01% of the 13F portfolio, value $19,771,580.

    13F-HR 0001387818-25-000005 filed by Barton Investment Management
    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 419,678 shares
    Change vs previous 13F +1,800 shares

    2.19% of the 13F portfolio, value $21,176,952.

    13F-HR 0001387818-25-000004 filed by Barton Investment Management
    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 417,878 shares
    Change vs previous 13F +3,280 shares

    2.48% of the 13F portfolio, value $20,187,687.

    13F-HR 0001387818-25-000002 filed by Barton Investment Management
    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 414,598 shares
    Change vs previous 13F +2,864 shares

    1.96% of the 13F portfolio, value $18,466,195.

    13F-HR 0001387818-25-000001 filed by Barton Investment Management
    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 411,734 shares
    Change vs previous 13F not available

    2.05% of the 13F portfolio, value $16,419,952.

    13F-HR 0001387818-24-000005 filed by Barton Investment Management
    Filed (acceptance time not in the bulk data set), ingested

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