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T. Rowe Price Investment Management, Inc.: ATO 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 ATO, newest first. How the timeline and the estimate are built.

T. Rowe Price Investment Management, Inc. held 114,786 ATO 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 114,786 shares
    Change vs previous 13F -243,866 shares

    0.01% of the 13F portfolio, value $19,775,000.

    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 358,652 shares
    Change vs previous 13F +78,055 shares

    0.05% of the 13F portfolio, value $66,251,000.

    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 280,597 shares
    Change vs previous 13F -71,749 shares

    0.03% of the 13F portfolio, value $47,037,000.

    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 352,346 shares
    Change vs previous 13F +654 shares

    0.04% of the 13F portfolio, value $60,164,000.

    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 351,692 shares
    Change vs previous 13F -57,345 shares

    0.03% of the 13F portfolio, value $54,200,000.

    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 409,037 shares
    Change vs previous 13F +7,218 shares

    0.04% of the 13F portfolio, value $63,229,000.

    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 401,819 shares
    Change vs previous 13F +29,701 shares

    0.03% of the 13F portfolio, value $55,962,000.

    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).

  8. period ended2024-09-30
    13F 372,118 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $51,617,000.

    13F-HR 0001897612-24-002015 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).