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WELLINGTON MANAGEMENT GROUP LLP: ATAT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WELLINGTON MANAGEMENT GROUP LLP on ATAT, newest first. How the timeline and the estimate are built.

WELLINGTON MANAGEMENT GROUP LLP held 348,174 ATAT 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 348,174 shares
    Change vs previous 13F +187,608 shares

    <0.01% of the 13F portfolio, value $11,071,932.

    13F-HR 0000902219-26-000311 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 160,566 shares
    Change vs previous 13F +2,233 shares

    <0.01% of the 13F portfolio, value $5,910,434.

    13F-HR 0000902219-26-000209 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 158,333 shares
    Change vs previous 13F -127,457 shares

    <0.01% of the 13F portfolio, value $6,238,319.

    13F-HR 0000902219-26-000103 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 285,790 shares
    Change vs previous 13F -15,590 shares

    <0.01% of the 13F portfolio, value $10,742,846.

    13F-HR 0000902219-25-000462 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 301,380 shares
    Change vs previous 13F +8,449 shares

    <0.01% of the 13F portfolio, value $9,797,864.

    13F-HR 0000902219-25-000356 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 292,931 shares
    Change vs previous 13F +37,204 shares

    <0.01% of the 13F portfolio, value $8,304,594.

    13F-HR 0000902219-25-000242 filed by WELLINGTON MANAGEMENT GROUP LLP
    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/A 255,727 shares
    Change vs previous 13F +207,499 shares

    <0.01% of the 13F portfolio, value $6,876,499.

    13F-HR 0000902219-25-000131 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 48,228 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,251,034.

    13F-HR 0000902219-24-000498 filed by WELLINGTON MANAGEMENT GROUP LLP
    Filed (acceptance time not in the bulk data set), ingested

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