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HALLSTATT ADVISORS L.P.: GFL position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HALLSTATT ADVISORS L.P. on GFL, newest first. How the timeline and the estimate are built.

HALLSTATT ADVISORS L.P. held 266,189 GFL shares at 2026-06-30 per its 13F-HR filed 2026-08-04.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 266,189 shares
    Change vs previous 13F -53,083 shares

    6.9% of the 13F portfolio, value $9,793,093.

    13F-HR 0001214659-26-009497 filed by HALLSTATT ADVISORS L.P.
    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 319,272 shares
    Change vs previous 13F +125,721 shares

    10.54% of the 13F portfolio, value $13,320,028.

    13F-HR 0001214659-26-005718 filed by HALLSTATT ADVISORS L.P.
    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 193,551 shares
    Change vs previous 13F not available

    6.19% of the 13F portfolio, value $8,313,015.

    13F-HR 0001214659-26-001402 filed by HALLSTATT ADVISORS L.P.
    Filed (acceptance time not in the bulk data set), ingested

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