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Disclosery

GAMMA Investing LLC: CMCSA position timeline

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

GAMMA Investing LLC held 42,416 CMCSA 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 42,416 shares
    Change vs previous 13F +2,920 shares

    0.03% of the 13F portfolio, value $922,972.

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

  2. period ended2026-06-30
    13F 39,496 shares
    Change vs previous 13F -25,457 shares

    0.04% of the 13F portfolio, value $969,627.

    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 64,953 shares
    Change vs previous 13F +21,576 shares

    0.09% of the 13F portfolio, value $1,864,801.

    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 43,377 shares
    Change vs previous 13F +8,750 shares

    0.07% of the 13F portfolio, value $1,296,539.

    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 34,627 shares
    Change vs previous 13F -16,617 shares

    0.06% of the 13F portfolio, value $1,087,980.

    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 51,244 shares
    Change vs previous 13F +19,684 shares

    0.12% of the 13F portfolio, value $1,828,898.

    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 31,560 shares
    Change vs previous 13F -19,225 shares

    0.09% of the 13F portfolio, value $1,164,564.

    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 50,785 shares
    Change vs previous 13F not available

    0.16% of the 13F portfolio, value $1,905,961.

    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).