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ARK Investment Management LLC: OKLO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARK Investment Management LLC on OKLO, newest first. How the timeline and the estimate are built.

ARK Investment Management LLC held 372,257 OKLO 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 372,257 shares
    Change vs previous 13F +21,088 shares

    0.13% of the 13F portfolio, value $19,480,209.

    13F-HR 0001104659-26-096910 filed by ARK Investment 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 351,169 shares
    Change vs previous 13F +128,124 shares

    0.14% of the 13F portfolio, value $17,414,471.

    13F-HR 0001104659-26-059240 filed by ARK Investment 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 223,045 shares
    Change vs previous 13F +66,564 shares

    0.11% of the 13F portfolio, value $16,005,709.

    13F-HR 0001104659-26-013538 filed by ARK Investment 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 156,481 shares
    Change vs previous 13F -33,630 shares

    0.1% of the 13F portfolio, value $17,467,974.

    13F-HR 0001104659-25-110217 filed by ARK Investment 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 190,111 shares
    Change vs previous 13F -97,633 shares

    0.08% of the 13F portfolio, value $10,644,315.

    13F-HR 0001104659-25-072098 filed by ARK Investment 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 287,744 shares
    Change vs previous 13F -166,550 shares

    0.06% of the 13F portfolio, value $6,223,903.

    13F-HR 0001104659-25-045396 filed by ARK Investment Management LLC
    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 454,294 shares
    Change vs previous 13F -573,708 shares

    0.08% of the 13F portfolio, value $9,644,662.

    13F-HR 0001104659-25-009155 filed by ARK Investment Management LLC
    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 1,028,002 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $8,316,536.

    13F-HR 0001104659-24-113006 filed by ARK Investment Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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