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Disclosery

Bruce & Co., Inc.: MASS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Bruce & Co., Inc. on MASS, newest first. How the timeline and the estimate are built.

Bruce & Co., Inc. held 68,286 MASS shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 68,286 shares
    Change vs previous 13F 0 shares

    0.16% of the 13F portfolio, value $594,088.

    13F-HR 0001104659-26-096709 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.12% of the 13F portfolio, value $417,910.

    13F-HR 0001104659-26-061024 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.11% of the 13F portfolio, value $358,502.

    13F-HR 0001104659-26-015254 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.19% of the 13F portfolio, value $598,185.

    13F-HR 0001104659-25-111225 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.16% of the 13F portfolio, value $486,879.

    13F-HR 0001104659-25-078312 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $305,921.

    13F-HR 0001104659-25-048350 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F 0 shares

    0.05% of the 13F portfolio, value $150,229.

    13F-HR 0001104659-25-011296 filed by Bruce & Co., 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 68,286 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $236,952.

    13F-HR 0001104659-24-118711 filed by Bruce & Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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