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BLAIR WILLIAM & CO/IL: ONT position timeline

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

BLAIR WILLIAM & CO/IL held 173,037 ONT 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 173,037 shares
    Change vs previous 13F -93,943 shares

    0.01% of the 13F portfolio, value $3,497,078.

    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 266,980 shares
    Change vs previous 13F -73,889 shares

    0.02% of the 13F portfolio, value $5,844,181.

    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 340,869 shares
    Change vs previous 13F +11,893 shares

    0.02% of the 13F portfolio, value $8,463,777.

    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 328,976 shares
    Change vs previous 13F -21,155 shares

    0.02% of the 13F portfolio, value $9,033,681.

    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 350,131 shares
    Change vs previous 13F +15,910 shares

    0.02% of the 13F portfolio, value $7,664,368.

    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 334,221 shares
    Change vs previous 13F -312,391 shares

    0.01% of the 13F portfolio, value $4,765,991.

    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 646,612 shares
    Change vs previous 13F -104,076 shares

    0.03% of the 13F portfolio, value $11,994,653.

    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 750,688 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $19,743,094.

    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).