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

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

New England Research & Management, Inc. held 734 TDG 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 734 shares
    Change vs previous 13F -17 shares

    0.38% of the 13F portfolio, value $977,051.

    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 751 shares
    Change vs previous 13F -26 shares

    0.37% of the 13F portfolio, value $870,379.

    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 777 shares
    Change vs previous 13F -28 shares

    0.45% of the 13F portfolio, value $1,033,293.

    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 805 shares
    Change vs previous 13F +230 shares

    0.49% of the 13F portfolio, value $1,061,006.

    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 575 shares
    Change vs previous 13F -230 shares

    0.42% of the 13F portfolio, value $874,000.

    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 805 shares
    Change vs previous 13F -402 shares

    0.57% of the 13F portfolio, value $1,114,000.

    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 1,207 shares
    Change vs previous 13F +455 shares

    0.78% of the 13F portfolio, value $1,530,000.

    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 752 shares
    Change vs previous 13F not available

    0.5% of the 13F portfolio, value $1,073,000.

    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).