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Disclosery

Magnetar Financial LLC: CMCSA position timeline

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

Magnetar Financial LLC held 90,251 CMCSA 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 90,251 shares
    Change vs previous 13F +74,946 shares

    0.02% of the 13F portfolio, value $2,215,662.

    13F-HR 0001104659-26-096490 filed by Magnetar Financial LLC
    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 15,305 shares
    Change vs previous 13F -71,383 shares

    <0.01% of the 13F portfolio, value $442,315.

    13F-HR 0001104659-26-059841 filed by Magnetar Financial LLC
    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 86,688 shares
    Change vs previous 13F -199,941 shares

    0.03% of the 13F portfolio, value $2,591,105.

    13F-HR 0001104659-26-015538 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 286,629 shares
    Change vs previous 13F -647 shares

    0.05% of the 13F portfolio, value $9,005,883.

    13F-HR 0001104659-25-111094 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 287,276 shares
    Change vs previous 13F +259,644 shares

    0.05% of the 13F portfolio, value $10,252,881.

    13F-HR 0001104659-25-076542 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 27,632 shares
    Change vs previous 13F -129,503 shares

    0.01% of the 13F portfolio, value $1,019,621.

    13F-HR 0001104659-25-048974 filed by Magnetar Financial LLC
    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 157,135 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $5,897,277.

    13F-HR 0001104659-25-011245 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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