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Disclosery

GAMMA Investing LLC: MTRN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMMA Investing LLC on MTRN, newest first. How the timeline and the estimate are built.

GAMMA Investing LLC held 917 MTRN shares at 2026-09-30 per its 13F-HR filed 2026-10-08.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 917 shares
    Change vs previous 13F +214 shares

    0.01% of the 13F portfolio, value $247,214.

    13F-HR 0002010235-26-000007 filed by GAMMA Investing LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 703 shares
    Change vs previous 13F +122 shares

    0.01% of the 13F portfolio, value $209,065.

    13F-HR 0002010235-26-000005 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 581 shares
    Change vs previous 13F -23 shares

    <0.01% of the 13F portfolio, value $84,042.

    13F-HR 0002010235-26-000003 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 604 shares
    Change vs previous 13F +110 shares

    <0.01% of the 13F portfolio, value $75,089.

    13F-HR 0002010235-26-000001 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 494 shares
    Change vs previous 13F +135 shares

    <0.01% of the 13F portfolio, value $59,680.

    13F-HR 0002010235-25-000009 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 359 shares
    Change vs previous 13F -1,787 shares

    <0.01% of the 13F portfolio, value $28,494.

    13F-HR 0002010235-25-000007 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F/A 2,146 shares
    Change vs previous 13F +1,885 shares

    0.01% of the 13F portfolio, value $175,114.

    13F-HR/A 0002010235-25-000006 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 261 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $25,808.

    13F-HR 0002010235-25-000001 filed by GAMMA Investing LLC
    Filed (acceptance time not in the bulk data set), ingested

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