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Disclosery

ARK Investment Management LLC: MASS position timeline

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

ARK Investment Management LLC held 2,027,920 MASS 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 2,027,920 shares
    Change vs previous 13F +81,235 shares

    0.11% of the 13F portfolio, value $17,642,905.

    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 1,946,685 shares
    Change vs previous 13F -39,301 shares

    0.09% of the 13F portfolio, value $11,913,711.

    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 1,985,986 shares
    Change vs previous 13F +32,214 shares

    0.07% of the 13F portfolio, value $10,426,428.

    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 1,953,772 shares
    Change vs previous 13F -694,506 shares

    0.1% of the 13F portfolio, value $17,115,042.

    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 2,648,278 shares
    Change vs previous 13F -251,069 shares

    0.14% of the 13F portfolio, value $18,882,224.

    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 2,899,347 shares
    Change vs previous 13F +110,781 shares

    0.13% of the 13F portfolio, value $12,989,076.

    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 2,788,566 shares
    Change vs previous 13F -430,983 shares

    0.05% of the 13F portfolio, value $6,134,845.

    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 3,219,549 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $11,171,835.

    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).