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New England Research & Management, Inc.: ZTS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of New England Research & Management, Inc. on ZTS, newest first. How the timeline and the estimate are built.

New England Research & Management, Inc. held 18,461 ZTS shares at 2026-06-30 per its 13F-HR filed 2026-07-09.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 18,461 shares
    Change vs previous 13F -1,930 shares

    0.52% of the 13F portfolio, value $1,326,607.

    13F-HR 0001951757-26-000938 filed by New England Research & Management, Inc.
    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 20,391 shares
    Change vs previous 13F +344 shares

    1.02% of the 13F portfolio, value $2,410,420.

    13F-HR 0001951757-26-000789 filed by New England Research & Management, Inc.
    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 20,047 shares
    Change vs previous 13F -3,563 shares

    1.1% of the 13F portfolio, value $2,522,314.

    13F-HR 0001951757-26-000024 filed by New England Research & Management, Inc.
    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 23,610 shares
    Change vs previous 13F -1,178 shares

    1.59% of the 13F portfolio, value $3,454,615.

    13F-HR 0001596077-25-000007 filed by New England Research & Management, Inc.
    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 24,788 shares
    Change vs previous 13F +170 shares

    1.84% of the 13F portfolio, value $3,866,000.

    13F-HR 0001596077-25-000004 filed by New England Research & Management, Inc.
    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 24,618 shares
    Change vs previous 13F -325 shares

    2.06% of the 13F portfolio, value $4,053,000.

    13F-HR 0001596077-25-000003 filed by New England Research & Management, Inc.
    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 24,943 shares
    Change vs previous 13F +1,775 shares

    2.07% of the 13F portfolio, value $4,064,000.

    13F-HR 0001596077-25-000001 filed by New England Research & Management, Inc.
    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 23,168 shares
    Change vs previous 13F not available

    2.12% of the 13F portfolio, value $4,527,000.

    13F-HR 0001596077-24-000007 filed by New England Research & Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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