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Disclosery

GAMMA Investing LLC: MAS position timeline

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

GAMMA Investing LLC held 34,605 MAS 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 34,605 shares
    Change vs previous 13F +6,187 shares

    0.08% of the 13F portfolio, value $2,332,377.

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

  2. period ended2026-06-30
    13F 28,418 shares
    Change vs previous 13F +7,283 shares

    0.09% of the 13F portfolio, value $2,312,373.

    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 21,135 shares
    Change vs previous 13F +2,904 shares

    0.06% of the 13F portfolio, value $1,275,920.

    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 18,231 shares
    Change vs previous 13F +91 shares

    0.06% of the 13F portfolio, value $1,156,939.

    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 18,140 shares
    Change vs previous 13F +2,195 shares

    0.07% of the 13F portfolio, value $1,276,875.

    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 15,945 shares
    Change vs previous 13F +2,835 shares

    0.06% of the 13F portfolio, value $1,026,220.

    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 13,110 shares
    Change vs previous 13F +5,378 shares

    0.07% of the 13F portfolio, value $911,669.

    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 7,732 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $561,111.

    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).