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T. Rowe Price Investment Management, Inc.: ATMU position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of T. Rowe Price Investment Management, Inc. on ATMU, newest first. How the timeline and the estimate are built.

T. Rowe Price Investment Management, Inc. held 1,784,618 ATMU 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 1,784,618 shares
    Change vs previous 13F +203,942 shares

    0.06% of the 13F portfolio, value $90,998,000.

    13F-HR 0001897612-26-000578 filed by T. Rowe Price Investment Management, 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 1,580,676 shares
    Change vs previous 13F -42,110 shares

    0.06% of the 13F portfolio, value $89,735,000.

    13F-HR 0001897612-26-000460 filed by T. Rowe Price Investment Management, 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/A 1,622,786 shares
    Change vs previous 13F +297,851 shares

    0.05% of the 13F portfolio, value $84,239,000.

    13F-HR/A 0001897612-26-000299 filed by T. Rowe Price Investment Management, 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 1,324,935 shares
    Change vs previous 13F -297,261 shares

    0.04% of the 13F portfolio, value $59,742,000.

    13F-HR 0001897612-25-000511 filed by T. Rowe Price Investment Management, 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 1,622,196 shares
    Change vs previous 13F -55,789 shares

    0.04% of the 13F portfolio, value $59,081,000.

    13F-HR 0000080255-25-000548 filed by T. Rowe Price Investment Management, 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 1,677,985 shares
    Change vs previous 13F +45,806 shares

    0.04% of the 13F portfolio, value $61,633,000.

    13F-HR 0000080255-25-000283 filed by T. Rowe Price Investment Management, 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 1,632,179 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $63,949,000.

    13F-HR 0000080255-25-000217 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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