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Disclosery

ORBIMED ADVISORS LLC: SION position timeline

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

ORBIMED ADVISORS LLC held 2,555,877 SION 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 2,555,877 shares
    Change vs previous 13F -974,825 shares

    2.13% of the 13F portfolio, value $112,433,029.

    13F-HR 0001172661-26-003740 filed by ORBIMED ADVISORS 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 3,530,702 shares
    Change vs previous 13F -30,953 shares

    3.09% of the 13F portfolio, value $141,545,843.

    13F-HR 0001172661-26-002369 filed by ORBIMED ADVISORS 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 3,561,655 shares
    Change vs previous 13F -143,304 shares

    3% of the 13F portfolio, value $146,526,487.

    13F-HR 0001172661-26-001119 filed by ORBIMED ADVISORS 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 3,704,959 shares
    Change vs previous 13F 0 shares

    2.61% of the 13F portfolio, value $108,962,844.

    13F-HR 0001172661-25-005047 filed by ORBIMED ADVISORS 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 3,704,959 shares
    Change vs previous 13F 0 shares

    1.62% of the 13F portfolio, value $64,281,039.

    13F-HR 0001172661-25-003514 filed by ORBIMED ADVISORS 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 3,704,959 shares
    Change vs previous 13F not available

    0.93% of the 13F portfolio, value $38,753,871.

    13F-HR 0001172661-25-002355 filed by ORBIMED ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

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