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Disclosery

Optiver Holding B.V.: ARGX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Optiver Holding B.V. on ARGX, newest first. How the timeline and the estimate are built.

Optiver Holding B.V. held 174 ARGX shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 174 shares
    Change vs previous 13F -9,936 shares

    <0.01% of the 13F portfolio, value $161,432.

    13F-HR 0001859606-26-000005 filed by Optiver Holding B.V.
    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/A 10,110 shares
    Change vs previous 13F +9,106 shares

    0.28% of the 13F portfolio, value $7,382,828.

    13F-HR/A 0001859606-26-000004 filed by Optiver Holding B.V.
    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 1,004 shares
    Change vs previous 13F -10,324 shares

    0.02% of the 13F portfolio, value $844,314.

    13F-HR 0001859606-26-000001 filed by Optiver Holding B.V.
    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 11,328 shares
    Change vs previous 13F -6,066 shares

    0.14% of the 13F portfolio, value $8,355,080.

    13F-HR 0001859606-25-000023 filed by Optiver Holding B.V.
    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 17,394 shares
    Change vs previous 13F +13,599 shares

    0.26% of the 13F portfolio, value $9,587,921.

    13F-HR 0001859606-25-000019 filed by Optiver Holding B.V.
    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 3,795 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $2,246,128.

    13F-HR 0001859606-25-000016 filed by Optiver Holding B.V.
    Filed (acceptance time not in the bulk data set), ingested

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