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BlackRock, Inc.: TTEK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BlackRock, Inc. on TTEK, newest first. How the timeline and the estimate are built.

BlackRock, Inc. held 28,675,276 TTEK shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 28,675,276 shares
    Change vs previous 13F +1,884,870 shares

    0.01% of the 13F portfolio, value $828,428,737.

    13F-HR 0002012383-26-003238 filed by BlackRock, Inc.
    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 26,790,406 shares
    Change vs previous 13F +1,058,777 shares

    0.01% of the 13F portfolio, value $806,927,023.

    13F-HR 0002012383-26-001841 filed by BlackRock, Inc.
    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 25,731,629 shares
    Change vs previous 13F +225,612 shares

    0.01% of the 13F portfolio, value $863,038,830.

    13F-HR 0002012383-26-000920 filed by BlackRock, Inc.
    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 25,506,017 shares
    Change vs previous 13F -189,476 shares

    0.01% of the 13F portfolio, value $851,390,862.

    13F-HR 0002012383-25-002949 filed by BlackRock, Inc.
    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 25,695,493 shares
    Change vs previous 13F -743,985 shares

    0.02% of the 13F portfolio, value $924,009,918.

    13F-HR 0001060021-25-000120 filed by BlackRock, Inc.
    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 26,439,478 shares
    Change vs previous 13F +412,704 shares

    0.02% of the 13F portfolio, value $773,354,724.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    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 26,026,774 shares
    Change vs previous 13F -187,703 shares

    0.02% of the 13F portfolio, value $1,036,906,660.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    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 26,214,477 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $1,236,274,751.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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