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Disclosery

Heronetta Management, L.P.: CNI position timeline

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

Heronetta Management, L.P. held 0 CNI shares at 2026-03-31 per its 13F-HR filed 2026-05-01.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -53,400 shares

    13F-HR 0000922423-26-000014 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 53,400 shares
    Change vs previous 13F 0 shares

    4.19% of the 13F portfolio, value $7,249,050.

    13F-HR 0000922423-26-000012 filed by Heronetta Management, 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 ended2025-09-30
    13F 53,400 shares
    Change vs previous 13F 0 shares

    3.84% of the 13F portfolio, value $7,008,216.

    13F-HR 0000922423-25-000048 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 53,400 shares
    Change vs previous 13F 0 shares

    4.22% of the 13F portfolio, value $7,576,926.

    13F-HR 0001140361-25-028999 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 53,400 shares
    Change vs previous 13F +1,400 shares

    4.09% of the 13F portfolio, value $7,478,136.

    13F-HR 0000922423-25-000035 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 52,000 shares
    Change vs previous 13F 0 shares

    4.34% of the 13F portfolio, value $7,590,440.

    13F-HR 0000922423-25-000016 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 52,000 shares
    Change vs previous 13F not available

    5.03% of the 13F portfolio, value $8,235,240.

    13F-HR 0000922423-24-000071 filed by Heronetta Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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