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Jefferies Financial Group Inc.: ARGX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Jefferies Financial Group Inc. on ARGX, newest first. How the timeline and the estimate are built.

Jefferies Financial Group Inc. held 45,068 ARGX shares at 2026-06-30 per its 13F-HR filed 2026-08-17.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 45,068 shares
    Change vs previous 13F +15,063 shares

    0.38% of the 13F portfolio, value $41,812,738.

    13F-HR 0001085146-26-000619 filed by Jefferies Financial Group 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 30,005 shares
    Change vs previous 13F +5 shares

    0.27% of the 13F portfolio, value $21,911,151.

    13F-HR 0000096223-26-000018 filed by Jefferies Financial Group 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 30,000 shares
    Change vs previous 13F -125,000 shares

    0.21% of the 13F portfolio, value $25,228,500.

    13F-HR 0000096223-26-000010 filed by Jefferies Financial Group 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 155,000 shares
    Change vs previous 13F -400 shares

    1.05% of the 13F portfolio, value $114,321,800.

    13F-HR 0000096223-25-000015 filed by Jefferies Financial Group 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 155,400 shares
    Change vs previous 13F -60,600 shares

    1.41% of the 13F portfolio, value $85,659,588.

    13F-HR 0001085146-25-004924 filed by Jefferies Financial Group 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 216,000 shares
    Change vs previous 13F +248 shares

    2.2% of the 13F portfolio, value $127,842,840.

    13F-HR 0001085146-25-002834 filed by Jefferies Financial Group 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/A 215,752 shares
    Change vs previous 13F +55,752 shares

    1.48% of the 13F portfolio, value $132,687,480.

    13F-HR/A 0001085146-25-001774 filed by Jefferies Financial Group 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 160,000 shares
    Change vs previous 13F not available

    1.41% of the 13F portfolio, value $86,732,800.

    13F-HR 0001085146-24-005726 filed by Jefferies Financial Group Inc.
    Filed (acceptance time not in the bulk data set), ingested

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