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MILLENNIUM MANAGEMENT LLC: SION position timeline

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

MILLENNIUM MANAGEMENT LLC held 276,733 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 276,733 shares
    Change vs previous 13F +136,092 shares

    0.01% of the 13F portfolio, value $12,173,485.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT 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 140,641 shares
    Change vs previous 13F +60,095 shares

    <0.01% of the 13F portfolio, value $5,638,298.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT 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 80,546 shares
    Change vs previous 13F -133,539 shares

    <0.01% of the 13F portfolio, value $3,313,662.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT 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 214,085 shares
    Change vs previous 13F +200,051 shares

    <0.01% of the 13F portfolio, value $6,296,240.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT 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 14,034 shares
    Change vs previous 13F -165,038 shares

    <0.01% of the 13F portfolio, value $243,490.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT 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 179,072 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,873,093.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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