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Disclosery

Bronte Capital Management Pty Ltd.: IBB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Bronte Capital Management Pty Ltd. on IBB, newest first. How the timeline and the estimate are built.

Bronte Capital Management Pty Ltd. held 65,807 IBB shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 65,807 shares
    Change vs previous 13F -3,458 shares

    1.41% of the 13F portfolio, value $12,515,833.

    13F-HR 0001471085-26-000004 filed by Bronte Capital Management Pty Ltd.
    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 69,265 shares
    Change vs previous 13F -3,085 shares

    1.24% of the 13F portfolio, value $11,695,395.

    13F-HR 0001471085-26-000002 filed by Bronte Capital Management Pty Ltd.
    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 72,350 shares
    Change vs previous 13F -209,072 shares

    1.28% of the 13F portfolio, value $12,210,509.

    13F-HR 0001471085-26-000001 filed by Bronte Capital Management Pty Ltd.
    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 281,422 shares
    Change vs previous 13F -13,924 shares

    4.09% of the 13F portfolio, value $45,418,962.

    13F-HR 0001471085-25-000008 filed by Bronte Capital Management Pty Ltd.
    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 295,346 shares
    Change vs previous 13F +32,947 shares

    3.31% of the 13F portfolio, value $42,141,922.

    13F-HR 0001471085-25-000005 filed by Bronte Capital Management Pty Ltd.
    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 262,399 shares
    Change vs previous 13F -2,187 shares

    3.19% of the 13F portfolio, value $39,261,464.

    13F-HR 0001471085-25-000003 filed by Bronte Capital Management Pty Ltd.
    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 264,586 shares
    Change vs previous 13F -8,369 shares

    3.24% of the 13F portfolio, value $41,020,793.

    13F-HR 0001471085-25-000001 filed by Bronte Capital Management Pty Ltd.
    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 272,955 shares
    Change vs previous 13F not available

    3.23% of the 13F portfolio, value $39,742,248.

    13F-HR 0001471085-24-000014 filed by Bronte Capital Management Pty Ltd.
    Filed (acceptance time not in the bulk data set), ingested

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