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BLAIR WILLIAM & CO/IL: RIVN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on RIVN, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 23,933 RIVN shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 23,933 shares
    Change vs previous 13F -1,816 shares

    <0.01% of the 13F portfolio, value $415,231.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    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 25,749 shares
    Change vs previous 13F -3,587 shares

    <0.01% of the 13F portfolio, value $387,516.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    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 29,336 shares
    Change vs previous 13F -2,098 shares

    <0.01% of the 13F portfolio, value $578,205.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    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 31,434 shares
    Change vs previous 13F -13,642 shares

    <0.01% of the 13F portfolio, value $461,445.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    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 45,076 shares
    Change vs previous 13F +3,909 shares

    <0.01% of the 13F portfolio, value $619,339.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    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 41,167 shares
    Change vs previous 13F +930 shares

    <0.01% of the 13F portfolio, value $512,524.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    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 40,237 shares
    Change vs previous 13F +1,843 shares

    <0.01% of the 13F portfolio, value $535,147.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    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 38,394 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $430,781.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

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