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Greenfield Seitz Capital Management, LLC: REGN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Greenfield Seitz Capital Management, LLC on REGN, newest first. How the timeline and the estimate are built.

Greenfield Seitz Capital Management, LLC held 3,074 REGN shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 3,074 shares
    Change vs previous 13F +60 shares

    0.57% of the 13F portfolio, value $1,916,762.

    13F-HR 0001214659-26-009955 filed by Greenfield Seitz Capital Management, 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 3,014 shares
    Change vs previous 13F +51 shares

    0.7% of the 13F portfolio, value $2,328,737.

    13F-HR 0001214659-26-005046 filed by Greenfield Seitz Capital Management, 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 2,963 shares
    Change vs previous 13F -297 shares

    0.75% of the 13F portfolio, value $2,287,051.

    13F-HR 0001214659-26-001559 filed by Greenfield Seitz Capital Management, 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 3,260 shares
    Change vs previous 13F +46 shares

    0.59% of the 13F portfolio, value $1,833,000.

    13F-HR 0001214659-25-017109 filed by Greenfield Seitz Capital Management, 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 3,214 shares
    Change vs previous 13F +192 shares

    0.6% of the 13F portfolio, value $1,687,350.

    13F-HR 0001214659-25-017108 filed by Greenfield Seitz Capital Management, 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 3,022 shares
    Change vs previous 13F +298 shares

    0.73% of the 13F portfolio, value $1,916,643.

    13F-HR 0001214659-25-017107 filed by Greenfield Seitz Capital Management, 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 2,724 shares
    Change vs previous 13F +373 shares

    0.74% of the 13F portfolio, value $1,940,387.

    13F-HR 0001214659-25-017106 filed by Greenfield Seitz Capital Management, 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 2,351 shares
    Change vs previous 13F not available

    0.91% of the 13F portfolio, value $2,471,465.

    13F-HR 0001214659-25-017105 filed by Greenfield Seitz Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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